Bar chart

Example

View example on CodePen
<script>
    data   = [[3,5,6],[8,4,5],[4,9,6]];
    labels = ['Richard', 'Alex', 'Nick'];

    new RGraph.Bar({
        id: 'cvs',
        data: data,
        options: {
            xaxisTickmarksCount: 0,
            xaxisLinewidth: 5,
            backgroundGridVlines: false,
            backgroundGridBorder: false,
            yaxis: false,
            colors:[
                'Gradient(#faa:red)',
                'Gradient(#afa:green)',
                'Gradient(#aaf:blue)'
            ],
            textSize: 24,
            xaxisLabels: '%{global:labels[%{index}]}',
            marginLeft: 45,
            backgroundGrid: true,
            marginInner: 50,
            tooltips: '<b>Results</b><br>%{key}',
            tooltipsFormattedKeyLabels: ['06:00','12:00','18:00'],
            tooltipsFormattedKeyColors:['red','green','blue'],
            tooltipsFormattedUnitsPost: '%',
            tooltipsCss: {
                fontSize: '16pt',
                textAlign: 'left'
            }
        }
    }).draw();
</script>

Properties

You can use these properties to control how the chart appears. You can set them by including them in the options section of the configuration as shown above.

Background properties

PropertyDescriptionDefault
backgroundBarsCountThe number of background bars.5
backgroundBarsColor1The color of the background bars, (1 of 2).rgba(0,0,0,0)
backgroundBarsColor2The color of the background bars, (2 of 2).rgba(0,0,0,0)
backgroundGridWhether to show the background grid or not.true
backgroundGridColorThe color of the background grid.#ddd
backgroundGridHsizeThe horizontal background grid size.40
backgroundGridVsizeThe vertical background grid size.18
backgroundGridLinewidthThe width that the background grid lines are. Decimals (eg 0.5) are permitted.1
backgroundGridBorderDetermines whether a border is drawn around the grid.true
backgroundGridHlinesDetermines whether to draw the horizontal grid lines.true
backgroundGridVlinesDetermines whether to draw the vertical grid lines.true
backgroundGridAutofitInstead of specifying a pixel width/height for the background grid, you can use autofit and specify how many horizontal and vertical lines you want.true
backgroundGridHlinesCountWhen using autofit this allows you to specify how many horizontal gridlines you want.5
backgroundGridVlinesCountWhen using autofit this allows you to specify how many vertical gridlines you want.20
backgroundGridAlignIf you want to have your gridlines line up with the labels (both X and Y axes), you can set this to true and RGraph will attempt to make the gridlines line up. If you have a marginInner set then the alignment will be thrown out.false
backgroundGridDottedIf you want to have your background grid dashed then set this to true.false
backgroundGridDashedIf you want to have your background grid dotted then set this to true. This takes precedence over dashed lines.false
backgroundGridThreedYaxisIf you're showing a 3D chart and don't want your grid lines to extend on to the Y axis then this property can be set to false.true
backgroundHbarsAn array of information stipulating horizontal colored bars. You can use these to indicate limits. Eg: obj.set('hbars', [[75, 10, 'yellow'], [85, 15, 'red']]); This would give you two bars, one red and a lower yellow bar. The units correspond to your scale and are the starting point and the height.null
backgroundImageIf you want to specify a background image to use on your chart, specify it with this property. If you use effects with a background image on your chart it may make the effect flicker. Using a background image with the draw event may mean that the event fires twice. There is a property that you can check though that is set when the image has loaded: obj.__rgraph_background_image_loaded__ Simply check this flag in your draw event. If it's true then the background image has loaded.null
backgroundImageStretchBy default your background image is stretched (if necessary) to cover the whole chart area (margins not included). If this is not what you want then set this property to false.true
backgroundImageXThe horizontal position of the image. The coordinates are the top left corner of the image.null
backgroundImageYThe vertical position of the image. The coordinates are the top left corner of the image.null
backgroundImageWThe width of the image. If you have a large canvas with many charts - you may need to specify this.null
backgroundImageHThe height of the image. If you have a large canvas with many charts - you may need to specify this.null
backgroundImageAlignInstead of specifying the coordinates of the image, you can instead simply align it top, bottom, left or right. Examples are:
  • top left
  • bottom right
  • bottom
  • right
null
backgroundImageAlphaThe alpha value (the opacity) of the image.1
backgroundColorIf you want to have a single background color for your chart you can use this. It doesn't cover the margins. If you want that then you can simply apply a css background color to the canvas tag.null
backgroundBarsCount
The number of background bars.
Default: 5

backgroundBarsColor1
The color of the background bars, (1 of 2).
Default: rgba(0,0,0,0)

backgroundBarsColor2
The color of the background bars, (2 of 2).
Default: rgba(0,0,0,0)

backgroundGrid
Whether to show the background grid or not.
Default: true

backgroundGridColor
The color of the background grid.
Default: #ddd

backgroundGridHsize
The horizontal background grid size.
Default: 40

backgroundGridVsize
The vertical background grid size.
Default: 18

backgroundGridLinewidth
The width that the background grid lines are. Decimals (eg 0.5) are permitted.
Default: 1

backgroundGridBorder
Determines whether a border is drawn around the grid.
Default: true

backgroundGridHlines
Determines whether to draw the horizontal grid lines.
Default: true

backgroundGridVlines
Determines whether to draw the vertical grid lines.
Default: true

backgroundGridAutofit
Instead of specifying a pixel width/height for the background grid, you can use autofit and specify how many horizontal and vertical lines you want.
Default: true

backgroundGridHlinesCount
When using autofit this allows you to specify how many horizontal gridlines you want.
Default: 5

backgroundGridVlinesCount
When using autofit this allows you to specify how many vertical gridlines you want.
Default: 20

backgroundGridAlign
If you want to have your gridlines line up with the labels (both X and Y axes), you can set this to true and RGraph will attempt to make the gridlines line up. If you have a marginInner set then the alignment will be thrown out.
Default: false

backgroundGridDotted
If you want to have your background grid dashed then set this to true.
Default: false

backgroundGridDashed
If you want to have your background grid dotted then set this to true. This takes precedence over dashed lines.
Default: false

backgroundGridThreedYaxis
If you're showing a 3D chart and don't want your grid lines to extend on to the Y axis then this property can be set to false.
Default: true

backgroundHbars
An array of information stipulating horizontal colored bars. You can use these to indicate limits. Eg: obj.set('hbars', [[75, 10, 'yellow'], [85, 15, 'red']]); This would give you two bars, one red and a lower yellow bar. The units correspond to your scale and are the starting point and the height.
Default: null

backgroundImage
If you want to specify a background image to use on your chart, specify it with this property. If you use effects with a background image on your chart it may make the effect flicker. Using a background image with the draw event may mean that the event fires twice. There is a property that you can check though that is set when the image has loaded: obj.__rgraph_background_image_loaded__ Simply check this flag in your draw event. If it's true then the background image has loaded.
Default: null

backgroundImageStretch
By default your background image is stretched (if necessary) to cover the whole chart area (margins not included). If this is not what you want then set this property to false.
Default: true

backgroundImageX
The horizontal position of the image. The coordinates are the top left corner of the image.
Default: null

backgroundImageY
The vertical position of the image. The coordinates are the top left corner of the image.
Default: null

backgroundImageW
The width of the image. If you have a large canvas with many charts - you may need to specify this.
Default: null

backgroundImageH
The height of the image. If you have a large canvas with many charts - you may need to specify this.
Default: null

backgroundImageAlign
Instead of specifying the coordinates of the image, you can instead simply align it top, bottom, left or right. Examples are:

Default: null

backgroundImageAlpha
The alpha value (the opacity) of the image.
Default: 1

backgroundColor
If you want to have a single background color for your chart you can use this. It doesn't cover the margins. If you want that then you can simply apply a css background color to the canvas tag.
Default: null

X-axis properties

PropertyDescriptionDefault
xaxisSet this to true if you don't want an x-axis.true
xaxisPositionThis determines where the x-axis is positioned. If you wish to show negative values then you should set this to center or you can now (Jul 2016) use an offset x-axis by leaving this property at the default bottom and using the yaxisScaleMax and yaxisScaleMin properties.bottom
xaxisLinewidthThe linewidth used for the x-axis and the x-axis tickmarks.1
xaxisColorThe color of the x-axis (and its tickmarks.black
xaxisTickmarksWhether the x-axis tickmarks are shown.true
xaxisTickmarksLastLeftWhether the last tickmark on the left is displayed.null
xaxisTickmarksLastRightWhether the last tickmark on the right is displayed.null
xaxisTickmarksLengthThe length of the tickmarks.3
xaxisTickmarksCountThe number of tickmarks that are shown on the x-axis.null
xaxisLabelsAn array of the labels to be used on the chart. You can also give this option a string if you prefer and use formatted labelsAn empty array
xaxisLabelsFontThe font used to render the labels.null
xaxisLabelsSizeThe size of the labels.null
xaxisLabelsColorThe color of the labels.null
xaxisLabelsBoldWhether the labels are bold or not.null
xaxisLabelsItalicWhether the labels are italic or not.null
xaxisLabelsOffsetxThis allows you finer-grained control in the horizontal direction over the x-axis label positioning if you need it. 0
xaxisLabelsOffsetyThis allows you finer-grained control in the vertical direction over the x-axis label positioning if you need it. 0
xaxisLabelsHalignThe horizontal alignment of the labels.center
xaxisLabelsValignThe vertical alignment of the labels.top
xaxisLabelsAngleThe angle of the x-axis labels. For example, you could set this to 45 to get angled labels.0 (Horizontal)
xaxisLabelsPositionThis property controls how the labels are arranged - section for most chart types and edge for Line charts. You probably won't need to change this.section
xaxisLabelsClassThis property allows you to add your own css class to the x-axis labels which you can then use for styling purposes or to make retrieving the span tags easier (the dom elements). If you inspect the labels in your browser's javascript console (you will first need to enable the textAccessiblePointerevents property) you will be able to see the other css classes that are assigned to the labels.[none]
xaxisLabelsSpecificAlignThis determines the alignment of the specific labels. You probably won't need this.left
xaxisLabelsFormattedDecimalsWhen using formatted labels this is the number of decimals that are applied to the %{value_formatted} macro. 0
xaxisLabelsFormattedPointWhen using formatted labels this is the decimal point character that's used with the %{value_formatted} macro..
xaxisLabelsFormattedThousandWhen using formatted labels this is the thousand separator character that's used with the %{value_formatted} macro.,
xaxisLabelsFormattedUnitsPreWhen using formatted labels these are the units that are prepended to the number with the %{value_formatted} macro.(an empty string)
xaxisLabelsFormattedUnitsPostWhen using formatted labels these are the units that are appended to the number with the %{value_formatted} macro.(an empty string)
xaxisTitleThis allows you to specify a title for the x-axis.none
xaxisTitleSizeThis allows you to specify a size for the x-axis title.null
xaxisTitleFontThis allows you to specify a font for the x-axis title.null
xaxisTitleBoldThis controls whether the x-axis title is bold or not.null
xaxisTitleItalicThis controls whether the x-axis title is italic or not.null
xaxisTitleColorThis controls the color of the x-axis title.null
xaxisTitleXBy giving this you can specifically set the horizontal position of the x-axis title.null
xaxisTitleYBy giving this you can specifically set the vertical position of the x-axis title.null
xaxisTitleOffsetxThe horizontal pixel offset that's applied to the title. 0
xaxisTitleOffsetyThe vertical pixel offset that's applied to the title. 0
xaxisTitleHalignThe horizontal alignment of the title.center
xaxisTitleValignThe vertical alignment of the title.top
xaxisTitlePosThis is a multiplier (ie a digit usually between 0 and 1) that gets multiplied with the margin to get the Y coordinate of the title.null
xaxis
Set this to true if you don't want an x-axis.
Default: true

xaxisPosition
This determines where the x-axis is positioned. If you wish to show negative values then you should set this to center or you can now (Jul 2016) use an offset x-axis by leaving this property at the default bottom and using the yaxisScaleMax and yaxisScaleMin properties.
Default: bottom

xaxisLinewidth
The linewidth used for the x-axis and the x-axis tickmarks.
Default: 1

xaxisColor
The color of the x-axis (and its tickmarks.
Default: black

xaxisTickmarks
Whether the x-axis tickmarks are shown.
Default: true

xaxisTickmarksLastLeft
Whether the last tickmark on the left is displayed.
Default: null

xaxisTickmarksLastRight
Whether the last tickmark on the right is displayed.
Default: null

xaxisTickmarksLength
The length of the tickmarks.
Default: 3

xaxisTickmarksCount
The number of tickmarks that are shown on the x-axis.
Default: null

xaxisLabels
An array of the labels to be used on the chart. You can also give this option a string if you prefer and use formatted labels
Default: An empty array

xaxisLabelsFont
The font used to render the labels.
Default: null

xaxisLabelsSize
The size of the labels.
Default: null

xaxisLabelsColor
The color of the labels.
Default: null

xaxisLabelsBold
Whether the labels are bold or not.
Default: null

xaxisLabelsItalic
Whether the labels are italic or not.
Default: null

xaxisLabelsOffsetx
This allows you finer-grained control in the horizontal direction over the x-axis label positioning if you need it.
Default: 0

xaxisLabelsOffsety
This allows you finer-grained control in the vertical direction over the x-axis label positioning if you need it.
Default: 0

xaxisLabelsHalign
The horizontal alignment of the labels.
Default: center

xaxisLabelsValign
The vertical alignment of the labels.
Default: top

xaxisLabelsAngle
The angle of the x-axis labels. For example, you could set this to 45 to get angled labels.
Default: 0 (Horizontal)

xaxisLabelsPosition
This property controls how the labels are arranged - section for most chart types and edge for Line charts. You probably won't need to change this.
Default: section

xaxisLabelsClass
This property allows you to add your own css class to the x-axis labels which you can then use for styling purposes or to make retrieving the span tags easier (the dom elements). If you inspect the labels in your browser's javascript console (you will first need to enable the textAccessiblePointerevents property) you will be able to see the other css classes that are assigned to the labels.
Default: [none]

xaxisLabelsSpecificAlign
This determines the alignment of the specific labels. You probably won't need this.
Default: left

xaxisLabelsFormattedDecimals
When using formatted labels this is the number of decimals that are applied to the %{value_formatted} macro.
Default: 0

xaxisLabelsFormattedPoint
When using formatted labels this is the decimal point character that's used with the %{value_formatted} macro.
Default: .

xaxisLabelsFormattedThousand
When using formatted labels this is the thousand separator character that's used with the %{value_formatted} macro.
Default: ,

xaxisLabelsFormattedUnitsPre
When using formatted labels these are the units that are prepended to the number with the %{value_formatted} macro.
Default: (an empty string)

xaxisLabelsFormattedUnitsPost
When using formatted labels these are the units that are appended to the number with the %{value_formatted} macro.
Default: (an empty string)

xaxisTitle
This allows you to specify a title for the x-axis.
Default: none

xaxisTitleSize
This allows you to specify a size for the x-axis title.
Default: null

xaxisTitleFont
This allows you to specify a font for the x-axis title.
Default: null

xaxisTitleBold
This controls whether the x-axis title is bold or not.
Default: null

xaxisTitleItalic
This controls whether the x-axis title is italic or not.
Default: null

xaxisTitleColor
This controls the color of the x-axis title.
Default: null

xaxisTitleX
By giving this you can specifically set the horizontal position of the x-axis title.
Default: null

xaxisTitleY
By giving this you can specifically set the vertical position of the x-axis title.
Default: null

xaxisTitleOffsetx
The horizontal pixel offset that's applied to the title.
Default: 0

xaxisTitleOffsety
The vertical pixel offset that's applied to the title.
Default: 0

xaxisTitleHalign
The horizontal alignment of the title.
Default: center

xaxisTitleValign
The vertical alignment of the title.
Default: top

xaxisTitlePos
This is a multiplier (ie a digit usually between 0 and 1) that gets multiplied with the margin to get the Y coordinate of the title.
Default: null

Y-axis properties

PropertyDescriptionDefault
yaxisWhether the y-axis is drawn.true
yaxisPositionSpecifies the y-axis position. Can be left or right.left
yaxisLinewidthThe linewidth of the y-axis.1
yaxisColorThe color of the y-axis.black
yaxisTickmarks.Whether the y-axis tickmarks are drawn.true
yaxisTickmarksLengthThe length of the y-axis tickmarks.3
yaxisTickmarksCountThis allows you to stipulate how many y-axis tickmarks there are.null (related to how many labels there are)
yaxisTickmarksLastTopWhether the top-most tickmark is drawn.null (displayed if the X-axis position warrants it)
yaxisTickmarksLastBottomWhether the bottom-most tickmark is drawn.null (displayed if the X-axis position warrants it)
yaxisLabelsCountA value that controls how many y-axis labels there are. This value could formerly be either 1/3/5/10 however now it can be any number.5
yaxisLabelsSpecificYou can use this option to give your own y-axis labels (eg ['Low', 'Medium', 'High']. Note: Since March 2013 you may now need to add an extra (optionally) empty element to the array of labels to achieve your desired result.null
yaxisLabelsPositionThis controls how the specific labels are positioned on the y-axis. It does not affect a scale.edge
yaxisLabelsOffsetxThis allows you finer-grained control in the horizontal direction over the y-axis label positioning if you need it. 0
yaxisLabelsOffsetyThis allows you finer-grained control in the vertical direction over the y-axis label positioning if you need it. 0
yaxisLabelsFontThe font that's used by the y-axis labels.null
yaxisLabelsSizeThe size of the y-axis labels.null
yaxisLabelsColorThe color of the y-axis labels.null
yaxisLabelsBoldWhether the y-axis labels are bold or not.null
yaxisLabelsItalicWhether the y-axis labels are italic or not.null
yaxisLabelsHalignThe horizontal alignment of the y-axis labels.null
yaxisLabelsValignThe vertical alignment of the y-axis labels.null
yaxisTitleThis allows you to specify a title for the y-axis.none
yaxisTitleSizeThis allows you to specify a size for the y-axis title.null
yaxisTitleFontThis allows you to specify a font for the y-axis title.null
yaxisTitleBoldThis controls whether the y-axis title is bold or not.null
yaxisTitleColorThis controls what color the y-axis title is.null
yaxisTitleItalicThis controls whether the y-axis title is italic or not.null
yaxisTitlePosThis is multiplied with the margin to give the position of the y-axis title.0.25
yaxisTitleOffsetxThe pixel offset that's added to the y-axis titles X coordinate. 0
yaxisTitleOffsetyThe pixel offset that's added to the y-axis titles Y coordinate. 0
yaxisTitleXBy giving this you can specifically set the horizontal position of the y-axis title.null
yaxisTitleYBy giving this you can specifically set the vertical position of the y-axis title.null
yaxisTitleHalignThe horizontal alignment of the y-axis title.null
yaxisTitleValignThe vertical alignment of the y-axis title.null
yaxisTitleAccessibleWith this property you can control whether the y-axis title is accessible or not.true
yaxisScaleWhether the y-axis scale is displayed or not.true
yaxisScaleRoundWhether the y-axis scale is rounded up or not.false
yaxisScaleUnitsPreThe units that the y-axis is measured in. This string is displayed before the actual number, allowing you to specify values such as $50.none
yaxisScaleUnitsPostThe units that the y-axis is measured in. This string is displayed after the actual number, allowing you to specify values such as 50ms.none
yaxisScaleMaxThe optional maximum Y scale value. If not specified then it will be calculated.null (It's calculated)
yaxisScaleMinThe optional minimum Y scale value. If not specified then it will be 0. 0
yaxisScaleFormatterTo allow thoroughly custom formats of numbers in the scale, you can use this option to specify a function that is used by RGraph to format numbers. This function should handle ALL of the formatting. Eg:

function myFormatter(opt)
{
    var num = Number(opt.number) * 5;

    return String(num)
}
obj.set('yaxisScaleFormatter', myFormatter);
null
yaxisScaleRoundWhether to round the scale up. eg A maximum value of 59 results in scale to 100.false
yaxisScaleDecimalsThe number of decimal places to display for the y-axis scale. 0
yaxisScalePointThe character that's used as the decimal point..
yaxisScaleThousandThe character that's used as the thousand separator.,
yaxisScaleInvertWhether the y-axis scale is inverted or not.false
yaxis
Whether the y-axis is drawn.
Default: true

yaxisPosition
Specifies the y-axis position. Can be left or right.
Default: left

yaxisLinewidth
The linewidth of the y-axis.
Default: 1

yaxisColor
The color of the y-axis.
Default: black

yaxisTickmarks.
Whether the y-axis tickmarks are drawn.
Default: true

yaxisTickmarksLength
The length of the y-axis tickmarks.
Default: 3

yaxisTickmarksCount
This allows you to stipulate how many y-axis tickmarks there are.
Default: null (related to how many labels there are)

yaxisTickmarksLastTop
Whether the top-most tickmark is drawn.
Default: null (displayed if the X-axis position warrants it)

yaxisTickmarksLastBottom
Whether the bottom-most tickmark is drawn.
Default: null (displayed if the X-axis position warrants it)

yaxisLabelsCount
A value that controls how many y-axis labels there are. This value could formerly be either 1/3/5/10 however now it can be any number.
Default: 5

yaxisLabelsSpecific
You can use this option to give your own y-axis labels (eg ['Low', 'Medium', 'High']. Note: Since March 2013 you may now need to add an extra (optionally) empty element to the array of labels to achieve your desired result.
Default: null

yaxisLabelsPosition
This controls how the specific labels are positioned on the y-axis. It does not affect a scale.
Default: edge

yaxisLabelsOffsetx
This allows you finer-grained control in the horizontal direction over the y-axis label positioning if you need it.
Default: 0

yaxisLabelsOffsety
This allows you finer-grained control in the vertical direction over the y-axis label positioning if you need it.
Default: 0

yaxisLabelsFont
The font that's used by the y-axis labels.
Default: null

yaxisLabelsSize
The size of the y-axis labels.
Default: null

yaxisLabelsColor
The color of the y-axis labels.
Default: null

yaxisLabelsBold
Whether the y-axis labels are bold or not.
Default: null

yaxisLabelsItalic
Whether the y-axis labels are italic or not.
Default: null

yaxisLabelsHalign
The horizontal alignment of the y-axis labels.
Default: null

yaxisLabelsValign
The vertical alignment of the y-axis labels.
Default: null

yaxisTitle
This allows you to specify a title for the y-axis.
Default: none

yaxisTitleSize
This allows you to specify a size for the y-axis title.
Default: null

yaxisTitleFont
This allows you to specify a font for the y-axis title.
Default: null

yaxisTitleBold
This controls whether the y-axis title is bold or not.
Default: null

yaxisTitleColor
This controls what color the y-axis title is.
Default: null

yaxisTitleItalic
This controls whether the y-axis title is italic or not.
Default: null

yaxisTitlePos
This is multiplied with the margin to give the position of the y-axis title.
Default: 0.25

yaxisTitleOffsetx
The pixel offset that's added to the y-axis titles X coordinate.
Default: 0

yaxisTitleOffsety
The pixel offset that's added to the y-axis titles Y coordinate.
Default: 0

yaxisTitleX
By giving this you can specifically set the horizontal position of the y-axis title.
Default: null

yaxisTitleY
By giving this you can specifically set the vertical position of the y-axis title.
Default: null

yaxisTitleHalign
The horizontal alignment of the y-axis title.
Default: null

yaxisTitleValign
The vertical alignment of the y-axis title.
Default: null

yaxisTitleAccessible
With this property you can control whether the y-axis title is accessible or not.
Default: true

yaxisScale
Whether the y-axis scale is displayed or not.
Default: true

yaxisScaleRound
Whether the y-axis scale is rounded up or not.
Default: false

yaxisScaleUnitsPre
The units that the y-axis is measured in. This string is displayed before the actual number, allowing you to specify values such as $50.
Default: none

yaxisScaleUnitsPost
The units that the y-axis is measured in. This string is displayed after the actual number, allowing you to specify values such as 50ms.
Default: none

yaxisScaleMax
The optional maximum Y scale value. If not specified then it will be calculated.
Default: null (It's calculated)

yaxisScaleMin
The optional minimum Y scale value. If not specified then it will be 0.
Default: 0

yaxisScaleFormatter
To allow thoroughly custom formats of numbers in the scale, you can use this option to specify a function that is used by RGraph to format numbers. This function should handle ALL of the formatting. Eg:

function myFormatter(opt)
{
    var num = Number(opt.number) * 5;

    return String(num)
}
obj.set('yaxisScaleFormatter', myFormatter);

Default: null

yaxisScaleRound
Whether to round the scale up. eg A maximum value of 59 results in scale to 100.
Default: false

yaxisScaleDecimals
The number of decimal places to display for the y-axis scale.
Default: 0

yaxisScalePoint
The character that's used as the decimal point.
Default: .

yaxisScaleThousand
The character that's used as the thousand separator.
Default: ,

yaxisScaleInvert
Whether the y-axis scale is inverted or not.
Default: false

Color properties

PropertyDescriptionDefault
colorsAn array of the colors of the bars.An array - ['rgb(0,0,255)', '#0f0', '#00f', '#ff0', '#0ff', '#0f0']
colorsStrokeThe color of the outline of the bars.rgba(0,0,0,0)
colorsSequentialIf true, for regular Bar charts, (not stacked or grouped), the colors that you specify will be used sequentially.false
colors
An array of the colors of the bars.
Default: An array - ['rgb(0,0,255)', '#0f0', '#00f', '#ff0', '#0ff', '#0f0']

colorsStroke
The color of the outline of the bars.
Default: rgba(0,0,0,0)

colorsSequential
If true, for regular Bar charts, (not stacked or grouped), the colors that you specify will be used sequentially.
Default: false

Margin properties

PropertyDescriptionDefault
marginLeftThe left margin of the chart, (the margin is where the labels and title are)).35
marginRightThe right margin of the chart, (the margin is where the labels and title are).35
marginTopThe top margin of the chart, (the margin is where the labels and title are).35
marginBottomThe bottom margin of the chart, (the margin is where the labels and title are).35
marginInnerThe horizontal margin (in pixels) of the chart. The horizontal margin is on either side of each bar - so if you want to widen the bars then reduce this value.5
marginInnerGroupedIn a grouped Bar chart this is the margin between bars that are on the same group. You can see examples of the marginInnerGrouped in the examples folder of the download archive (eg the demos/bar-grouped2.html file).1
marginLeft
The left margin of the chart, (the margin is where the labels and title are)).
Default: 35

marginRight
The right margin of the chart, (the margin is where the labels and title are).
Default: 35

marginTop
The top margin of the chart, (the margin is where the labels and title are).
Default: 35

marginBottom
The bottom margin of the chart, (the margin is where the labels and title are).
Default: 35

marginInner
The horizontal margin (in pixels) of the chart. The horizontal margin is on either side of each bar - so if you want to widen the bars then reduce this value.
Default: 5

marginInnerGrouped
In a grouped Bar chart this is the margin between bars that are on the same group. You can see examples of the marginInnerGrouped in the examples folder of the download archive (eg the demos/bar-grouped2.html file).
Default: 1

Labels and text properties

PropertyDescriptionDefault
textAccessibleA new feature in 2016 that allows you to use dom text in place of canvas text. It makes for much higher quality text that you can also select if desired (for copy/paste operations). It won't fit all situations and you can read more about the DOM text feature here. A good way to control borders/margins/padding etc is not to set them on the canvas but to wrap the canvas in a div and set them on that like this:
<div style="margin-left: 50px; display: inline-block">
    <canvas id="cvs" width="650" height="250"></canvas>
</div>
false
textAccessibleOverflowThis can be visible or hidden and it controls whether the text is clipped to the edges of the canvas. It defaults to be visible and means you can set small margins if you wish.visible
textAccessiblePointereventsThis controls whether the dom text responds to mouse-based events or not (it sets the pointer-events css property to none).true
textFontThe font used to render the text.Arial, Verdana, sans-serif
textSizeThe size (in points) of the labels.12
textColorThe color of the labels.black
textBoldWhether the font used to render the text is bold or not.false
textItalicWhether the font used to render the text is italic or not.false
labelsAboveIf true, values will be shown above the bars. For regular and stacked Bar charts units are included, whereas for grouped Bar charts they're not (usually there isn't enough space for them).false
labelsAboveDecimalsThis stipulates how many decimals are used in the labelsAbove labels. 0
labelsAboveUnitsPreThe units to put on the labelsAbove labels. These are positioned before the number.none
labelsAboveUnitsPostThe units to put on the labelsAbove labels. These are positioned after the number.none
labelsAbovePointThe character that's used as the labelsAbove decimal separator..
labelsAboveThousandThe character that's used as the labelsAbove thousand separator.,
labelsAboveBackgroundThe background color of the labelsAbove labels.rgba(0,0,0,0)
labelsAboveSizeThe font size of the labelsAbove labels. Useful if you only have a few bars.null
labelsAboveColorThe color of the labelsAbove labels.null
labelsAboveBoldWhether the labelsAbove labels are bold or not.null
labelsAboveItalicWhether the labelsAbove labels are italic or not.null
labelsAboveFontThe font face that is used to render the text.null
labelsAboveOffsetxThe horizontal offset of the labels above the bars (in pixels). 0
labelsAboveOffsetyThe distance of the labels above the bars (in pixels).4
labelsAboveAngleYou can use this to angle the text shown above the bars. It can be anything from -90 to 90 (degrees).null
labelsAboveSpecificIf instead of the values you want to show arbitrary text - you can with this. It should be an array of the labels to be shown.null
labelsIngraphAn array of labels for the chart that are drawn "inside" the chart. If you have 5 data points then this should have a corresponding number of elements, though there is a shorthand style available.null
labelsIngraphFontThe font that the ingraph labels are rendered in.null
labelsIngraphSizeThe size of the ingraph labels.null
labelsIngraphColorThe color of the ingraph labels.null
labelsIngraphBoldWhether the ingraph labels are bold or not.null
labelsIngraphItalicWhether the ingraph labels are italic or not.null
labelsIngraphOffsetxThis allows you finer-grained control in the horizontal direction over the text positioning if you need it. 0
labelsIngraphOffsetyThis allows you finer-grained control in the vertical direction over the text positioning if you need it. 0
textThis allows you to add custom text to your chart if you want to. There's a dedicated page that describes this option here.null
textAccessible
A new feature in 2016 that allows you to use dom text in place of canvas text. It makes for much higher quality text that you can also select if desired (for copy/paste operations). It won't fit all situations and you can read more about the DOM text feature here. A good way to control borders/margins/padding etc is not to set them on the canvas but to wrap the canvas in a div and set them on that like this:
<div style="margin-left: 50px; display: inline-block">
    <canvas id="cvs" width="650" height="250"></canvas>
</div>

Default: false

textAccessibleOverflow
This can be visible or hidden and it controls whether the text is clipped to the edges of the canvas. It defaults to be visible and means you can set small margins if you wish.
Default: visible

textAccessiblePointerevents
This controls whether the dom text responds to mouse-based events or not (it sets the pointer-events css property to none).
Default: true

textFont
The font used to render the text.
Default: Arial, Verdana, sans-serif

textSize
The size (in points) of the labels.
Default: 12

textColor
The color of the labels.
Default: black

textBold
Whether the font used to render the text is bold or not.
Default: false

textItalic
Whether the font used to render the text is italic or not.
Default: false

labelsAbove
If true, values will be shown above the bars. For regular and stacked Bar charts units are included, whereas for grouped Bar charts they're not (usually there isn't enough space for them).
Default: false

labelsAboveDecimals
This stipulates how many decimals are used in the labelsAbove labels.
Default: 0

labelsAboveUnitsPre
The units to put on the labelsAbove labels. These are positioned before the number.
Default: none

labelsAboveUnitsPost
The units to put on the labelsAbove labels. These are positioned after the number.
Default: none

labelsAbovePoint
The character that's used as the labelsAbove decimal separator.
Default: .

labelsAboveThousand
The character that's used as the labelsAbove thousand separator.
Default: ,

labelsAboveBackground
The background color of the labelsAbove labels.
Default: rgba(0,0,0,0)

labelsAboveSize
The font size of the labelsAbove labels. Useful if you only have a few bars.
Default: null

labelsAboveColor
The color of the labelsAbove labels.
Default: null

labelsAboveBold
Whether the labelsAbove labels are bold or not.
Default: null

labelsAboveItalic
Whether the labelsAbove labels are italic or not.
Default: null

labelsAboveFont
The font face that is used to render the text.
Default: null

labelsAboveOffsetx
The horizontal offset of the labels above the bars (in pixels).
Default: 0

labelsAboveOffsety
The distance of the labels above the bars (in pixels).
Default: 4

labelsAboveAngle
You can use this to angle the text shown above the bars. It can be anything from -90 to 90 (degrees).
Default: null

labelsAboveSpecific
If instead of the values you want to show arbitrary text - you can with this. It should be an array of the labels to be shown.
Default: null

labelsIngraph
An array of labels for the chart that are drawn "inside" the chart. If you have 5 data points then this should have a corresponding number of elements, though there is a shorthand style available.
Default: null

labelsIngraphFont
The font that the ingraph labels are rendered in.
Default: null

labelsIngraphSize
The size of the ingraph labels.
Default: null

labelsIngraphColor
The color of the ingraph labels.
Default: null

labelsIngraphBold
Whether the ingraph labels are bold or not.
Default: null

labelsIngraphItalic
Whether the ingraph labels are italic or not.
Default: null

labelsIngraphOffsetx
This allows you finer-grained control in the horizontal direction over the text positioning if you need it.
Default: 0

labelsIngraphOffsety
This allows you finer-grained control in the vertical direction over the text positioning if you need it.
Default: 0

text
This allows you to add custom text to your chart if you want to. There's a dedicated page that describes this option here.
Default: null

Title properties

PropertyDescriptionDefault
titleThe title of the chart, if any.null
titleFontThe font that the title is rendered in. If not specified the textFont setting is used (usually Arial).null
titleSizeThe size of the title. If not specified the size is usually 4pt bigger than the textSize setting.null
titleBoldWhether the title is bold or not.null
titleItalicWhether the title is italic or not.null
titleColorThe color of the title.null
titleXTo give the exact X coordinate for the title - use this. This can also be a string like this: "-5" - in which case it's converted to a number and added to the calculated coordinate - allowing you to adjust the calculated coordinate.null
titleYTo give the exact Y coordinate for the title - use this. This can also be a string like this: "-5" - in which case it's converted to a number and added to the calculated coordinate - allowing you to adjust the calculated coordinate.null
titleHalignThe horizontal alignment of the title.center (can change depending on other options)
titleValignThe vertical alignment of the title.center (can change depending on other options)
titleOffsetxYou can use this property to adjust the positioning of the title in the horizontal direction (positive values adjust the title to the right and negative values adjust it to the left). 0
titleOffsetyYou can use this property to adjust the positioning of the title in the vertical direction (positive values adjust the title downwards and negative values adjust it upwards). 0
titleSubtitleThe subtitle of the chart. If a subtitle is specified the title is moved up to accommodate it. As such you might need to give a larger marginTop value.null
titleSubtitleSizeThe size of the font used to render the subtitle.null
titleSubtitleColorThe color of the subtitle.#aaa
titleSubtitleFontThe font used to render the subtitle.null
titleSubtitleBoldWhether the subtitle is bold or not.null
titleSubtitleItalicWhether the subtitle is italic or not.null
titleSubtitleOffsetxUse this property to adjust the horizontal position of the subtitle. 0
titleSubtitleOffsetyUse this property to adjust the vertical position of the subtitle. 0
title
The title of the chart, if any.
Default: null

titleFont
The font that the title is rendered in. If not specified the textFont setting is used (usually Arial).
Default: null

titleSize
The size of the title. If not specified the size is usually 4pt bigger than the textSize setting.
Default: null

titleBold
Whether the title is bold or not.
Default: null

titleItalic
Whether the title is italic or not.
Default: null

titleColor
The color of the title.
Default: null

titleX
To give the exact X coordinate for the title - use this. This can also be a string like this: "-5" - in which case it's converted to a number and added to the calculated coordinate - allowing you to adjust the calculated coordinate.
Default: null

titleY
To give the exact Y coordinate for the title - use this. This can also be a string like this: "-5" - in which case it's converted to a number and added to the calculated coordinate - allowing you to adjust the calculated coordinate.
Default: null

titleHalign
The horizontal alignment of the title.
Default: center (can change depending on other options)

titleValign
The vertical alignment of the title.
Default: center (can change depending on other options)

titleOffsetx
You can use this property to adjust the positioning of the title in the horizontal direction (positive values adjust the title to the right and negative values adjust it to the left).
Default: 0

titleOffsety
You can use this property to adjust the positioning of the title in the vertical direction (positive values adjust the title downwards and negative values adjust it upwards).
Default: 0

titleSubtitle
The subtitle of the chart. If a subtitle is specified the title is moved up to accommodate it. As such you might need to give a larger marginTop value.
Default: null

titleSubtitleSize
The size of the font used to render the subtitle.
Default: null

titleSubtitleColor
The color of the subtitle.
Default: #aaa

titleSubtitleFont
The font used to render the subtitle.
Default: null

titleSubtitleBold
Whether the subtitle is bold or not.
Default: null

titleSubtitleItalic
Whether the subtitle is italic or not.
Default: null

titleSubtitleOffsetx
Use this property to adjust the horizontal position of the subtitle.
Default: 0

titleSubtitleOffsety
Use this property to adjust the vertical position of the subtitle.
Default: 0

Shadow properties

PropertyDescriptionDefault
shadowWhether a drop shadow is applied.false
shadowColorThe color of the shadow.#aaa
shadowOffsetxThe horizontal offset of the shadow. 0
shadowOffsetyThe vertical offset of the shadow. 0
shadowBlurThe severity of the shadow blurring effect.15
shadow
Whether a drop shadow is applied.
Default: false

shadowColor
The color of the shadow.
Default: #aaa

shadowOffsetx
The horizontal offset of the shadow.
Default: 0

shadowOffsety
The vertical offset of the shadow.
Default: 0

shadowBlur
The severity of the shadow blurring effect.
Default: 15

Key properties

The key properties are documented on the key documentation page.

Interactive features properties

PropertyDescriptionDefault
contextmenuAn array of context menu items. More information about context menus is here.[] (An empty array)
tooltipsA numerically indexed array of tooltips that are shown when a bar is clicked. These can contain html.null
tooltipsEffectThe effect used for showing tooltips. Possible values are slide fade or none.slide
tooltipsEventThis is the event that triggers the tooltips. It can be either click or mousemove.click
tooltipsOverrideIf you wish to handle showing tooltips yourself, this should be a function that does just that. There's more information on the tooltips documentation page.null
tooltipsHighlightSet this to false if you don't want your charts to be highlighted.true
tooltipsFormattedPointWhen using formatted tooltip strings this is used as the point when using the %{value_formatted} option..
tooltipsFormattedThousandWhen using formatted tooltip strings this is used as the thousand separator when using the %{value_formatted} option.,
tooltipsFormattedDecimalsWhen using formatted tooltip strings this specifies the number of decimals when using the %{value_formatted} option. 0
tooltipsFormattedUnitsPreWhen using formatted tooltip strings these units are prepended to the number when using the %{value_formatted} option.(an empty string)
tooltipsFormattedUnitsPostWhen using formatted tooltip strings these units are appended to the number when using the %{value_formatted} option.(an empty string)
tooltipsFormattedKeyColorsWhen using formatted tooltip strings you can give specific colors for the %{key} option to use.null
tooltipsFormattedKeyColorsShapeThis is the shape that's used in the tooltip key. It can be square or circlesquare
tooltipsFormattedKeyColorsCss By using this property you can add css values to the key color shape that appears in the tooltip key. Note the property name is "color" and not "colors" like previous properties. It should be an object of css properties like this:
tooltipsFormattedKeyColorsCss : {
    border: "1px solid #ddd";
}
null
tooltipsFormattedKeyLabelsWhen using formatted tooltip strings these are the labels that are displayed.[] (an empty array)
tooltipsFormattedListTypeWith this property you can switch between an unordered list (the default) and an ordered list. Possible values are ul and ol.ul
tooltipsFormattedListItemsThis should be a two-dimension array of the list items that are to be shown for all of the tooltips. An example of this property is:
tooltipsFormattedListItems: [
    ['Bill','Jerry','Berty'], // First tooltip
    ['Gill','Carrie','Lucy'], // Second tooltip
    ['Pob','Nobby','Hilda']   // Third tooltip
]
You can use css to style this list - for example:
.RGraph_tooltip ul#rgraph_formatted_tooltips_list li {
    text-align: left;
    color: yellow;
}
null
tooltipsFormattedTableHeadersWhen showing a table in the tooltips this can be an array of headers for the table. These are added to the tooltip using th tags.null
tooltipsFormattedTableDataThis is the data that is added to the table. This is a 3-dimensional array so it's easy to make a mistake. See the example, copy the code from it and then modify it to suit. You'll create fewer bugs this way.null)
tooltipsPointerBy default the tooltips have a small triangular pointer that points to the shape that was clicked on. You can turn this off with this property.true
tooltipsPointerCssIf you want any css values applied to the tooltips pointer (for example, a css border) then specify an object containing those values to this property. For example:
tooltipsPointerCss: {
    borderLeft: 'gray 2px solid',
    borderBottom: 'gray 2px solid'
}
null
tooltipsPointerOffsetxThis allows you to adjust the vertical position of the tooltips pointer. 0
tooltipsPointerOffsetyThis allows you to adjust the vertical position of the tooltips pointer (for example, if you add a border you may need to move it down slightly). 0
tooltipsPositionStaticThe new default (as of August 2020) is for tooltips to be positioned statically and not be dependent on the mouse position. If you don't want this for whatever reason, you can disable it with this setting. When you set it to false tooltips are positioned next to the mouse pointer.true
tooltipsCssIf you want to specify some css that gets applied to all of the tooltips, but don't want to use the RGraph.tooltips.style object (which gets applied to all of the tooltips on the page for every chart) you can use this property to give some per-object css for the tooltips. These are css styles that get applied to all of the tooltips for the specific object only. It should look like this:
tooltipsCss: {
    fontFamily: 'Verdana',
    fontSize: '20pt',
    backgroundColor: 'black',
    color: 'white'
}
null
tooltipsCssClassThis is the name of the css class the chart uses.RGraph_tooltip
tooltipsOffsetxThis property allows you to shift the tooltips left or right. 0
tooltipsOffsetyThis property allows you to shift the tooltips up or down. 0
tooltipsHotspotXonlyIf set to true the hotspot for the tooltips will ignore the height of the bar and extend from the top margin down to the bottom margin. This can be useful when you have zero value bars but still want to see the tooltips.false
tooltipsHotspotIgnoreThis can be a number of things and can be used to ignore certain tooltip hotspots - which can allow charts to the rear to be clickable. There's an example of this in the download archive called pie-tooltipshotspotignore.html. You can use the transparent color to allow the rear chart to be seen in such a case. It can be:
  • A single boolean value (ie true or false) to enable or disable all of the hotspots - true means the hotspot will be ignored
  • A single number (the zero-indexed number corresponding to the hotspot to ignore)
  • An array of numbers (the numbers are the indexes of hotspots to ignore)
  • An array of boolean true or false values - the position of these values correspond to the index(es) of the segments to ignore (for example [false, false, true, false, false] - true means the corresponding hotspot will be ignored)
null
crosshairsIf true, you will get a crosshair centering on the current mouse position.false
crosshairsLinewidthThis controls the linewidth of the crosshairs.1
crosshairsColorThe color of the crosshairs.#333
crosshairsHlineThis determines whether the horizontal crosshair is shown.true
crosshairsVlineThis determines whether the vertical crosshair is shown.true
annotatableWhether annotations are enabled for the chart (ie you can draw on the chart interactively.false
annotatableColorIf you do not allow the use of the palette, then this will be the only color allowed for annotations.black
annotatableLinewidthThis is the linewidth of the annotations.1
adjustableDefaulting to false, this determines whether your Bar chart will be adjustable.false
adjustableOnlyThis should be an array of values that determine whether a Bar is adjustable or not. A true value for when it is, a false value for when it's not.null
contextmenu
An array of context menu items. More information about context menus is here.
Default: [] (An empty array)

tooltips
A numerically indexed array of tooltips that are shown when a bar is clicked. These can contain html.
Default: null

tooltipsEffect
The effect used for showing tooltips. Possible values are slide fade or none.
Default: slide

tooltipsEvent
This is the event that triggers the tooltips. It can be either click or mousemove.
Default: click

tooltipsOverride
If you wish to handle showing tooltips yourself, this should be a function that does just that. There's more information on the tooltips documentation page.
Default: null

tooltipsHighlight
Set this to false if you don't want your charts to be highlighted.
Default: true

tooltipsFormattedPoint
When using formatted tooltip strings this is used as the point when using the %{value_formatted} option.
Default: .

tooltipsFormattedThousand
When using formatted tooltip strings this is used as the thousand separator when using the %{value_formatted} option.
Default: ,

tooltipsFormattedDecimals
When using formatted tooltip strings this specifies the number of decimals when using the %{value_formatted} option.
Default: 0

tooltipsFormattedUnitsPre
When using formatted tooltip strings these units are prepended to the number when using the %{value_formatted} option.
Default: (an empty string)

tooltipsFormattedUnitsPost
When using formatted tooltip strings these units are appended to the number when using the %{value_formatted} option.
Default: (an empty string)

tooltipsFormattedKeyColors
When using formatted tooltip strings you can give specific colors for the %{key} option to use.
Default: null

tooltipsFormattedKeyColorsShape
This is the shape that's used in the tooltip key. It can be square or circle
Default: square

tooltipsFormattedKeyColorsCss
By using this property you can add css values to the key color shape that appears in the tooltip key. Note the property name is "color" and not "colors" like previous properties. It should be an object of css properties like this:
tooltipsFormattedKeyColorsCss : {
    border: "1px solid #ddd";
}

Default: null

tooltipsFormattedKeyLabels
When using formatted tooltip strings these are the labels that are displayed.
Default: [] (an empty array)

tooltipsFormattedListType
With this property you can switch between an unordered list (the default) and an ordered list. Possible values are ul and ol.
Default: ul

tooltipsFormattedListItems
This should be a two-dimension array of the list items that are to be shown for all of the tooltips. An example of this property is:
tooltipsFormattedListItems: [
    ['Bill','Jerry','Berty'], // First tooltip
    ['Gill','Carrie','Lucy'], // Second tooltip
    ['Pob','Nobby','Hilda']   // Third tooltip
]
You can use css to style this list - for example:
.RGraph_tooltip ul#rgraph_formatted_tooltips_list li {
    text-align: left;
    color: yellow;
}

Default: null

tooltipsFormattedTableHeaders
When showing a table in the tooltips this can be an array of headers for the table. These are added to the tooltip using th tags.
Default: null

tooltipsFormattedTableData
This is the data that is added to the table. This is a 3-dimensional array so it's easy to make a mistake. See the example, copy the code from it and then modify it to suit. You'll create fewer bugs this way.
Default: null)

tooltipsPointer
By default the tooltips have a small triangular pointer that points to the shape that was clicked on. You can turn this off with this property.
Default: true

tooltipsPointerCss
If you want any css values applied to the tooltips pointer (for example, a css border) then specify an object containing those values to this property. For example:
tooltipsPointerCss: {
    borderLeft: 'gray 2px solid',
    borderBottom: 'gray 2px solid'
}

Default: null

tooltipsPointerOffsetx
This allows you to adjust the vertical position of the tooltips pointer.
Default: 0

tooltipsPointerOffsety
This allows you to adjust the vertical position of the tooltips pointer (for example, if you add a border you may need to move it down slightly).
Default: 0

tooltipsPositionStatic
The new default (as of August 2020) is for tooltips to be positioned statically and not be dependent on the mouse position. If you don't want this for whatever reason, you can disable it with this setting. When you set it to false tooltips are positioned next to the mouse pointer.
Default: true

tooltipsCss
If you want to specify some css that gets applied to all of the tooltips, but don't want to use the RGraph.tooltips.style object (which gets applied to all of the tooltips on the page for every chart) you can use this property to give some per-object css for the tooltips. These are css styles that get applied to all of the tooltips for the specific object only. It should look like this:
tooltipsCss: {
    fontFamily: 'Verdana',
    fontSize: '20pt',
    backgroundColor: 'black',
    color: 'white'
}

Default: null

tooltipsCssClass
This is the name of the css class the chart uses.
Default: RGraph_tooltip

tooltipsOffsetx
This property allows you to shift the tooltips left or right.
Default: 0

tooltipsOffsety
This property allows you to shift the tooltips up or down.
Default: 0

tooltipsHotspotXonly
If set to true the hotspot for the tooltips will ignore the height of the bar and extend from the top margin down to the bottom margin. This can be useful when you have zero value bars but still want to see the tooltips.
Default: false

tooltipsHotspotIgnore
This can be a number of things and can be used to ignore certain tooltip hotspots - which can allow charts to the rear to be clickable. There's an example of this in the download archive called pie-tooltipshotspotignore.html. You can use the transparent color to allow the rear chart to be seen in such a case. It can be:
Default: null

crosshairs
If true, you will get a crosshair centering on the current mouse position.
Default: false

crosshairsLinewidth
This controls the linewidth of the crosshairs.
Default: 1

crosshairsColor
The color of the crosshairs.
Default: #333

crosshairsHline
This determines whether the horizontal crosshair is shown.
Default: true

crosshairsVline
This determines whether the vertical crosshair is shown.
Default: true

annotatable
Whether annotations are enabled for the chart (ie you can draw on the chart interactively.
Default: false

annotatableColor
If you do not allow the use of the palette, then this will be the only color allowed for annotations.
Default: black

annotatableLinewidth
This is the linewidth of the annotations.
Default: 1

adjustable
Defaulting to false, this determines whether your Bar chart will be adjustable.
Default: false

adjustableOnly
This should be an array of values that determine whether a Bar is adjustable or not. A true value for when it is, a false value for when it's not.
Default: null

Miscellaneous properties

PropertyDescriptionDefault
highlightStyleBy default this is null but you can set it to a function if you wish so that function is called to do the chart highlighting. It's passed the shape object as an argument. As of version 5.23 you can also set this to invert as well. If you do this on a dark background you may find that you need to change the highlightFill color setting as well.null
highlightStrokeIf you use tooltips, this controls the color of the highlight stroke.black
highlightFillIf you use tooltips, this controls the color of the highlight fill.rgba(255,255,255,0.5)
variantThis stipulates whether you want a regular Bar chart or a 3D Bar chart. In August 2015 the 3D variant has much-improved perspective. Possible values are:
  • bar
  • 3d
bar
variantThreedAngleThis is the angle that is used to slant the canvas (it's measured in radians).0.1
variantThreedOffsetxThis determines the size of the offset in the horizontal direction.10
variantThreedOffsetyThis determines the size of the offset in the vertical direction.5
variantThreedXaxisThis allows you to turn on/off the 3D x-axis.true
variantThreedYaxisThis allows you to turn on/off the 3D y-axis.true
variantThreedXaxisColorThis allows you to set the color of the 3D x-axis.#ddd
variantThreedYaxisColorThis allows you to set the color of the 3D y-axis.#ddd
groupingHow the bars are grouped, and it should be one of: grouped or stacked.grouped
beveledIf true the bars will be given a 3D beveled appearance.false
cleartoThis is used in animations and effects as the default color to use when clearing the canvas.null
errorbarsThis should be an array of errorbar information or it can simply be a number instead (see below).false
errorbarsLinewidthThis is the linewidth of the errorbars.1
errorbarsColorThis is the color of the errorbars. You can also override the color in the errorbars array.black
errorbarsCappedThis dictates whether the errorbars have caps on their ends or not.true
errorbarsCappedWidthThis is the width of the caps (in total) on the end of the errorbars.14
combinedEffectSet this to the name of an effect (eg grow ) and the CombinedChart object will use that effect to draw the chart instead of the regular draw function.null
combinedEffectOptionsThis should be a string that contains a javascript object of options for the effect function like this:
combinedEffectOptions: '{frames: 300}'
It has to be a string because of a quirk of the option parsing system.
null
combinedEffectCallbackA function that runs when this objects effect has finished.null
cornersThis can be square (the default) or round. When it's set to round the tops of the bars will have rounded corners. There's a demo in the download archive that demonstrates this called bar-rounded-corners.html.square
cornersRoundRadiusThis is the extent of the rounded corners. Bigger values mean rounder corners.10
cornersRoundLeftThis allows you to control whether the left-hand-side of the bars are rounded or not.true
cornersRoundRightThis allows you to control whether the right-hand-side of the bars are rounded or not.true
cornersRoundLeftRadiusThis property allows you to specify the radius for the left-hand-side of the bars.null
cornersRoundRightRadiusThis property allows you to specify the radius for the right-hand-side of the bars.null
horizontalLines With this property you can add horizontal lines to your chart. This feature was initially designed with adding an average line indicator in mind but can be used to indicate any value with any label. The value of this property should be an array of objects and each object can consist of the following:
  • value: The value you want the line positioned at or the keyword average (default: average)
  • color: The color of the line (default: #666)
  • dashed: Whether the line is dashed or not (default: true)
  • dotted: Whether the line is dotted or not (default: false)
  • linewidth: The linewidth of the line (default: 1)
  • label: this is The label that appears above (by default) the line. If you don't want a label you can set this to an empty string. default: Average (%{value})
  • labelPosition: This can be a string that consists of the following keywords: left/center/right/left-margin/right-margin top/bottom (default: top right)
  • labelFont: The font that the label is drawn in (default: [the same as the textFont property])
  • labelColor: The color that the label is drawn in (default: #666)
  • labelSize: The size of the label (in points) (default: 4 points less than the textSize setting)
  • labelBold: Whether the label is bold or not (default: null [falls back to the textBold setting])
  • labelItalic: Whether the label is italic or not (default: null [falls back to the textItalic setting])
  • labelValueDecimals: How many decimals are shown on the number. (default: 2)
  • labelValuePoint: The character used as the decimal point. (default: .)
  • labelValueThousand: The character used as the thousand separator charactor.(default: ,)
  • labelValueUnitsPre: This string is prended to the number. (default: [an empty string])
  • labelValueUnitsPost: This string is appended to the number. (default: [an empty string])
  • labelOffsetx: The horizontal offset that's applied to the X coordinate. (default: 0)
  • labelOffsety: The vertical offset that's applied to the Y coordinate. (default: 0)
  • labelValueFormatter: This function handles ALL of the formatting of the number. (default: null)
Here's an example:
obj.set('horizontalLines', [
    {
        value: 'average',
        dashed: true,
        labelPosition:'left bottom'
    },
    {
        value: 10.48,
        label:'Value (%{value})',
        labelValueDecimals: 2,
        labelValueThousand: ',',
        labelValuePoint:'.',
        labelValueUnitsPre:'',
        labelValueUnitsPost:''
        //labelValueFormatter: function (opt)
        //{
        //    return opt.number;
        //}
    }
]);
null
responsiveThis option is new to the July 2023 release (v6.13) and allows you to inline the responsive configuration instead of appending it on to the end of the object it as a function. The documentation and demo pages have been updated to use this new option. You can read more about the responsive feature by reading the responsive configuration page.null
highlightStyle
By default this is null but you can set it to a function if you wish so that function is called to do the chart highlighting. It's passed the shape object as an argument. As of version 5.23 you can also set this to invert as well. If you do this on a dark background you may find that you need to change the highlightFill color setting as well.
Default: null

highlightStroke
If you use tooltips, this controls the color of the highlight stroke.
Default: black

highlightFill
If you use tooltips, this controls the color of the highlight fill.
Default: rgba(255,255,255,0.5)

variant
This stipulates whether you want a regular Bar chart or a 3D Bar chart. In August 2015 the 3D variant has much-improved perspective. Possible values are:
Default: bar

variantThreedAngle
This is the angle that is used to slant the canvas (it's measured in radians).
Default: 0.1

variantThreedOffsetx
This determines the size of the offset in the horizontal direction.
Default: 10

variantThreedOffsety
This determines the size of the offset in the vertical direction.
Default: 5

variantThreedXaxis
This allows you to turn on/off the 3D x-axis.
Default: true

variantThreedYaxis
This allows you to turn on/off the 3D y-axis.
Default: true

variantThreedXaxisColor
This allows you to set the color of the 3D x-axis.
Default: #ddd

variantThreedYaxisColor
This allows you to set the color of the 3D y-axis.
Default: #ddd

grouping
How the bars are grouped, and it should be one of: grouped or stacked.
Default: grouped

beveled
If true the bars will be given a 3D beveled appearance.
Default: false

clearto
This is used in animations and effects as the default color to use when clearing the canvas.
Default: null

errorbars
This should be an array of errorbar information or it can simply be a number instead (see below).
Default: false

errorbarsLinewidth
This is the linewidth of the errorbars.
Default: 1

errorbarsColor
This is the color of the errorbars. You can also override the color in the errorbars array.
Default: black

errorbarsCapped
This dictates whether the errorbars have caps on their ends or not.
Default: true

errorbarsCappedWidth
This is the width of the caps (in total) on the end of the errorbars.
Default: 14

combinedEffect
Set this to the name of an effect (eg grow ) and the CombinedChart object will use that effect to draw the chart instead of the regular draw function.
Default: null

combinedEffectOptions
This should be a string that contains a javascript object of options for the effect function like this:
combinedEffectOptions: '{frames: 300}'
It has to be a string because of a quirk of the option parsing system.
Default: null

combinedEffectCallback
A function that runs when this objects effect has finished.
Default: null

corners
This can be square (the default) or round. When it's set to round the tops of the bars will have rounded corners. There's a demo in the download archive that demonstrates this called bar-rounded-corners.html.
Default: square

cornersRoundRadius
This is the extent of the rounded corners. Bigger values mean rounder corners.
Default: 10

cornersRoundLeft
This allows you to control whether the left-hand-side of the bars are rounded or not.
Default: true

cornersRoundRight
This allows you to control whether the right-hand-side of the bars are rounded or not.
Default: true

cornersRoundLeftRadius
This property allows you to specify the radius for the left-hand-side of the bars.
Default: null

cornersRoundRightRadius
This property allows you to specify the radius for the right-hand-side of the bars.
Default: null

horizontalLines
With this property you can add horizontal lines to your chart. This feature was initially designed with adding an average line indicator in mind but can be used to indicate any value with any label. The value of this property should be an array of objects and each object can consist of the following: Here's an example:
obj.set('horizontalLines', [
    {
        value: 'average',
        dashed: true,
        labelPosition:'left bottom'
    },
    {
        value: 10.48,
        label:'Value (%{value})',
        labelValueDecimals: 2,
        labelValueThousand: ',',
        labelValuePoint:'.',
        labelValueUnitsPre:'',
        labelValueUnitsPost:''
        //labelValueFormatter: function (opt)
        //{
        //    return opt.number;
        //}
    }
]);

Default: null

responsive
This option is new to the July 2023 release (v6.13) and allows you to inline the responsive configuration instead of appending it on to the end of the object it as a function. The documentation and demo pages have been updated to use this new option. You can read more about the responsive feature by reading the responsive configuration page.
Default: null

Methods

obj.get(name)
An accessor that you can use to retrieve the values of properties.

obj.set(name, value)
An accessor that you can use to set the values of properties.

obj.getShape(event)
This method makes it easy to get hold of which bar or segment has been clicked on or hovered over. It returns an object which has the following indexes available:
object The chart object
x The X coordinate
y The Y coordinate
width The width of the bar
height The height of the bar
dataset The zero-indexed "group". In a regular Bar chart, this is the index of the bar. In a stacked or grouped chart however, this is the index of the group (or stack).
index The zero-indexed numerical index of the bar. In a stacked or grouped chart, this is the index in a particular group. In a regular Bar chart, this is always zero.
sequentialIndex The zero-indexed sequential index of the bar. For example, in a grouped chart where there are 3 groups of three - this goes from 0 up to 8.
tooltip If a tooltip is associated with this bar or segment this will be it.id: strings are expanded for you (where the tooltip text is retrieved from the html tag with the matching ID).
<script>
    obj.canvas.onclick = function (e)
    {
        RGraph.redraw();
    
        var canvas  = e.target,
            obj     = canvas.__object__,
            shape   = obj.getShape(e);

        if (shape) {
            var x      = shape.x,
                y      = shape.y,
                width  = shape.width,
                height = shape.height;
            
            obj.path(
                'b r % % % % s black f red',
                x, y, width, height
            );
        }
    }
</script>

obj.getShapeByX(event)

This method is similar to the above, but only uses the x-axis coordinate to determine the relevant bar.


obj.getValue(mixed)

This method can be used to get the value at a particular point or at the mouse coordinates, based on the scale that is in use. Not simply the coordinates of the mouse. The argument can either be an event object (for use in event listener functions) OR a two-element array consisting of the X and Y coordinates (ie when you're not in an event listener function). It returns null if the mouse or coordinates are in the margin areas. An example:

bar.canvas.onclick = function (e)
{
    var obj   = e.target.__object__;
    var value = obj.getValue(e);
    
    // ...
}

obj.getYCoord(value)

This method can be used to get a y-axis coordinate for a value when you're doing custom drawing on the chart. It returns null if the value is out of range.


obj.on(event, function)

This method can be used to set an event listener on an object. It operates similarly to the jquery on function. The first argument is the event that you wish to attach to and the second is the handler function. For example:

.on('draw', function (obj)
{
    // Put your event code here
});

obj.exec(function)

The exec function is documented here.


obj.responsive(configuration)

The responsive function helps your charts respond to different browser window sizes and screen resolutions. For example, for smaller screens, you might want to have angled labels or show shorter versions of them completely.

Update: There is now the responsive configuration option available to you and this is now the preferred method of configuration.

The responsive function and configuration option are documented on their own page here.

Errorbars

Errorbars can allow you to show an upper and lower range for a particular bar like the bar-errorbars.html example page shows in the download archive. You can specify errorbars like this:

bar = new RGraph.Bar({
    id: 'cvs',
    data: [12,18,10,9,6,20,18],
    options: {
        xaxisLabels: ['Monday','Tuesday','Wednesday','Thursday','Friday','Saturday','Sunday'],
        shadow: false,
        colors: ['red'],
        colorsStroke: 'rgba(0,0,0,0)',
        errorbars: [ [5,3], [2,6], [5,15,'blue',5,45] ],
        errorbarsLinewidth: 2,   // The default linewidth
        errorbarsColor: 'gray',  // The default color
        errorbarsCapped: true,   // Whether the ends of the errorbar have terminating lines
        errorbarsCappedWidth: 14 // The default width of the caps
    }                
}).draw();

This would give you three errorbars and the elements of each errorbar array are (each one is optional):

Note about the data_arr array

Sometimes you may wish to view your data as one big array, instead of one array per dataset. In this case, the obj.data_arr is available. This is one long array containing all of the individual data points.

Events

RGraph supports custom events that allow you to easily add interactivity to your charts if required. The following events are available:

For example:
new RGraph.Bar({
    id: 'cvs',
    data: [4,8,6,3,5,8,9],
    options: {
    }
}).on('draw', function (obj)
{
    console.log('The draw event has fired');
    
}).draw();

Effects

These effects are available and can be used instead of the draw function. There are also generic effects available which you can see here: Generic effects and transitions
<script>
    //
    // The optional callback function that's called when the effect is complete
    //
    function myCallback (obj)
    {
        // ...
    }

    obj = new RGraph.Bar({
        id: 'cvs',
        data: [3,4,7,5,6,9,8],
        options: {
            marginLeft: 35,
            marginInner: 60
        }
    }).wave({frames: 60}, myCallback);
    // .grow({frames: 60}, myCallback);
</script>