The changelog

Summary: This is the page to check for details on what has changed. The changes may or may not be relevant to you.

Backwards compatibility notes
Past release notes

June 2020 (v5.24)

The SVG Line chart now supports three new properties: dashed dotted and dasharray. This allows you to specify your line(s) to be dotted, dashed and also give your own style of linedash. The dasharray should be an array of two numbers - the length of the dash and the length of the gap.
The charts that have a Y axis (ie the Bar, Gantt, Horizontal Bar, Line, Scatter, Waterfall charts and the drawing API Y axis) before now rendered their Y axis title in native canvas text. This was because vertical accessible text had positioning and alignment issues. Now that these have been resolved (in a previous release) these charts have been updated to use DOM text to render their Y axis titles.
In what was most likely a regression - the default for the Bar chart labelsAboveOffsetx property has now been set to zero.

April 2020 (v5.23)

Added the labelsOffset property to the SVG Radar chart.
A fix for the Rose chart has been supplied by Mike Robinson that fixes labels not being rotated when the anglesStart property is used.

You can now use (certain) tooltip substitutions in the tooltipsCss values as well as in the tooltips themselves. This makes it even easier to customise how your tooltips look. So you could set the CSS like this:

...
// Some colors used by the chart
colors: ['red','green','blue'],

// A custom property
tooltipBackgroundColors: [
    'rgb(255,239,239)',
    'rgb(239,255,239)',
    'rgb(239,239,255)'
],

// Some CSS values for the tooltips that use substitution
tooltipsCss: {
    fontSize: '24pt',
    border: '3px solid %{property:colors[%{dataset}]}',
    backgroundColor: '%{property:tooltipBackgroundColors[%{dataset}]}'
}
...

You can also use the macros when you set tooltip CSS values like this:

RGraph.tooltips.style.backgroundColor = 'black';
RGraph.tooltips.style.color           = '%{property:colors[%{index}]}';

The canvas tooltips documentation (formatting macros can be used in SVG chart tooltips as well)

The Line chart has had dataset tooltips added. These are just like regular tooltips but allow you to click anywhere on a line and get a tooltip. You can have one for every dataset that's on the chart. This feature uses the newer canvas function isPointInStroke() so there are a few really old browsers (for example Internet Explorer 11) that don't support this function or feature.
The Waterfall chart now supports having the X axis positioned at the top of the chart as well as at the bottom and in the center.
Both the canvas and SVG charts have had the tooltipsOffsetx and tooltipsOffsety properties added.
A long-standing bug with angled accessible text has been resolved. However, as a result, if you use angled text your text may need adjusting.
The canvas globalCompositeOperation reference page has been updated with an interactive demonstration. By using this you can see exactly how the different modes affect your drawings. The globalCompositeOperation reference page.
The segmented bar chart demo has been updated so that it now uses the new dedicated class that's part of the Bar chart file. This new class handles all of the drawing for you and is part of the Bar chart file so you don't need to include any extra files. The segmented bar chart demo.
Both the canvas and SVG Rose charts have had the formatted tooltips property %{value2} added. This is only applicable to when you're displaying a non-equi-angular chart and allows you to show the second data-piece (the value controlling the angular size of the segment).
With the Waterfall getShape() functions return value, the index and the dataset properties have been swapped. This means that the first bar on the Waterfall chart now has a dataset value of 0, the second has 1, the third has a value of 2 etc. The index value of each bar is 0.
The Rose chart index and dataset properties in the return value of the getShape() method were reporting values the wrong way around. This has been corrected so you may need to adjust your code if you use these properties. Tooltips should not be affected. The 3D Rose chart demo.
Various objects have had a label property added to their shape objects. A part of this was also to add the dataset2 property to the Bipolar chart. For some charts the label property makes no sense - ie the drawing API objects, the Fuel, Gauge, Horizontal Progress bar, Meter, Odometer, Radial Scatter, Scatter, Thermometer and Vertical Progress bar charts. The charts that do support it are: Bar, Bipolar, Funnel, Gantt, Horizontal Bar, Line, Pie, Radar, Rose and Waterfall charts.
When the Line chart was using the arrow or filledarrow tickmark types and the spline option was enabled the arrowhead wasn't being angled correctly. This has now been remedied.
Internally, some custom formatted-tooltips code has been moved to be de-centralised. This will lead to smaller downloads - but not by much.
Fixed a very obscure bug which presented itself when using a PDF converter - not a web browser. Believe it or not it was just down to a spurious trailing comma - which web browsers ignored.
Finally fixed an old bug with the Rose chart which resulted in the tooltip hotspots not completely covering the visible segments. You can view the 3D Rose chart demo that's online for a demo. The 3D Rose chart demo.
The canvas Funnel chart has had the labelsPosition property added to it. This means that instead of the labels being vertically aligned to the edges of the segments they can be aligned to the center of each section instead. The possible values are edge (the default) and section. The SVG Funnel chart already has this capability. The example on the Funnel chart documentation page has been changed to demonstrate this. The Funnel chart documentation page.
Various charts have had the highlightStyle invert option added. Using this in conjunction with the highlightFill option to specify the color you can have the charts fade out the non-selected shapes instead of highlighting the focused bar. For a demo of this you can see it at the link below. A Bar chart demo with a dark background.
In the download archive, the line-banded-gradient.html demo has had the colors altered slightly. The line colors are now similar to the fill and there's a shadow to help you distinguish the two. Download the latest version of RGraph.

Backwards compatibility notes

There are notifications and advisories regarding backwards compatibility that you can read here: https://www.rgraph.net/canvas/compatibility.html

Past release notes

Older release notes though are not available.