Radial Scatter chart API reference

Summary: Documentation about the Radial scatter chart including information about all of the options that are available to you. A Radial Scatter chart is just like a regular Scatter chart but displayed in a circular fashion instead of a rectangular one.

• Example
• Properties
• Methods
• Custom RGraph events that are available

Example

<script>
    tooltip = '%{key}';

    new RGraph.RScatter({
        id: 'cvs',
        data: [
            [ [15,53,'red',tooltip], [45,63,'red',tooltip], [48,45,'red',tooltip], [52,38,'red',tooltip], [51,61,'red',tooltip] ],
            [ [270,45, 'blue',tooltip], [270,55, 'red',tooltip] ]
        ],
        options: {
            tooltipsFormattedKeyLabels: ['John','Molly','Pete','Olga','Luis','Kevin','Julie'],
            tooltipsCss: {
                fontSize: '16pt',
                boxShadow: '',
                textAlign: 'left'
            },
            labels: ['NE','E','SE','S','SW','W','NW','N'],
            labelsPosition: 'edge',
            marginLeft: 35,
            marginRight: 35,
            labelsAxesSize: 8
        }
    }).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 is shown above.

• Chart configuration properties
• Background properties
• Margin properties
• Labels and text properties
• Title properties
• Key properties
• Scale properties
• Interactive features properties
• Axes properties
• Line properties
• Miscellaneous properties

Chart configuration properties

Background properties

Margin properties

color properties

Labels and text properties

<div style="margin-left: 50px; display: inline-block">
    <canvas id="cvs" width="650" height="250"></canvas>
</div>

<div style="margin-left: 50px; display: inline-block">
    <canvas id="cvs" width="650" height="250"></canvas>
</div>

Title properties

Key properties

Scale properties

Axes properties

Interactive features properties

tooltipsFormattedKeyColorsCss : {
    border: "1px solid #ddd";
}

tooltipsFormattedListItems: [
    ['Bill','Jerry','Berty'], // First tooltip
    ['Gill','Carrie','Lucy'], // Second tooltip
    ['Pob','Nobby','Hilda']   // Third tooltip
]

.RGraph_tooltip ul#rgraph_formatted_tooltips_list li {
    text-align: left;
    color: yellow;
}

tooltips: {
    borderLeft: 'gray 2px solid',
    borderBottom: 'gray 2px solid'
}

tooltipsCss: {
    fontFamily: 'Verdana',
    fontSize: '20pt'
}

tooltipsFormattedKeyColorsCss : {
    border: "1px solid #ddd";
}

tooltipsFormattedListItems: [
    ['Bill','Jerry','Berty'], // First tooltip
    ['Gill','Carrie','Lucy'], // Second tooltip
    ['Pob','Nobby','Hilda']   // Third tooltip
]

.RGraph_tooltip ul#rgraph_formatted_tooltips_list li {
    text-align: left;
    color: yellow;
}

tooltips: {
    borderLeft: 'gray 2px solid',
    borderBottom: 'gray 2px solid'
}

tooltipsCss: {
    fontFamily: 'Verdana',
    fontSize: '20pt'
}

Line properties

Miscellaneous properties

Methods

<script>
    rscatter.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;

            // Path a circle that indicates the point
            obj.path(
                'b a % % 5 0 6.29 false s red f red',
                x, y
            );
        }
    }
</script>

This method can be used to get an appropriate radius of a point based on the scale. This is useful when working out how far away from the center a point should be. In a set of coordinates, the first value is the rotational value in degrees - it can be 0-360.

This method can be used to set an event listener on an object. It operates in a similar way 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:

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

The function is useful if you use method chaining when creating your charts:

var obj = new RGraph.RScatter({
    id: 'cvs',
    data: [[45,36],[48,68],[66,56],[95,35],[120,45],[155,65]]
}).on('draw', function (obj)
{
    // Put your draw event code here

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

The exec function is documented here.

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.

The responsive() function is documented on its own page here.

Custom RGraph events that are available

Custom RGraph events are events that RGraph fires when certain actions occur. There is a more comprehensive list of these events here . Here's some example code that show you how to add these events to your chart.

• click
• mousemove
• mouseover
• mouseout

There's more documentation about events available here: Summary of events documentation

<script>
    rscatter = new RGraph.RScatter({
        id: 'cvs',
        data: [[10,10],[20,20],[30,30],[40,40],[50,50]],
        options: {
        }
    }).draw().on('click', function (e, shape)
    {
        // Add your click event listener code here

    }).on('mousemove', function (e, shape)
    {
        // Add your mousemove event listener code here

    }).on('mouseover', function (e, shape)
    {
        // Add your mouseover event listener code here

    }).on('mouseout', function (obj)
    {
        // Add your mouseout event listener code here
    });
</script>