About

RGraph is a JavaScript charts library based on HTML5 SVG and canvas. RGraph is mature (over 18 years old) and has a wealth of features making it an ideal choice to use for showing charts on your website.

Version 7.11

Version 7.11 (released in March 2026) is the latest version of RGraph and contains just a few updates to the code which you can see on the changelog page. There's a new dumbbell variation for the Bar and Horizontal bar charts (both SVG and canvas) and the front page layout of the website has been tweaked.

Download »

HTML datagrid

In the April 2025 (v6.21) release a new datagrid object was added. This makes it easy to add static or dynamic data tables to your pages. It can be used whether you use the canvas or SVG libraries or entirely standalone.

Download

Get the latest version of RGraph (version 7.11, 21st March 2026) from the download page. You can read the changelog here. There's also older versions available, minified files and links to cdnjs.com hosted libraries.

Download »

License

RGraph can be used for free under the GPL or if that doesn't suit your situation there's an inexpensive (£129) commercial license available.

The SVG Bar chart wave effect is not working with the responsive function

Posted by Harry at 17:16 on Monday 18th January 2021 [link]

I'm trying to draw a Bar chart with the wave effect and also the responsive function.

The Bar chart with wave effect by itself works OK - however when I add the responsive function it behaves slightly differently - like its being drawn first and then animating.

Heres an example that shows it happening:

bar = new RGraph.SVG.Bar({
    id: 'chart1',
    data: [5,9,6,3,2,6,7],
    options: {
        backgroundGridBorder: false,
        backgroundGridVlines: false,
        xaxisLabels: ['Mon','Tue','Wed','Thu','Fri','Sat','Sun'],
        marginBottom: 100,
        xaxis: false,
        yaxis: false
    }
}).wave().responsive([
    {maxWidth: null, width: 750, height: 300, options: {marginInner: 25, textSize: 14}, callback: function () {},css: {}},
    {maxWidth: 900, width: 500, height: 200, options: {marginInner: 15, textSize: 10}, callback: function () {},css: {}}
]);

Posted by Richard at 18:13 on Monday 18th January 2021 [link]

Interesting. This appears to be due to multiple redraws - one by the responsive function and another by the wave effect.

After a while playing around with this I've come up with this solution, which configures the chart and then after a small delay calls the wave effect. Initially the color is set to transparent and then set to red after the delay and just before the effect starts.

bar = new RGraph.SVG.Bar({
    id: 'cc',
    data: [5,9,6,3,2,6,7],
    options: {
        backgroundGridBorder: false,
        backgroundGridVlines: false,
        xaxisLabels: ['Mon','Tue','Wed','Thu','Fri','Sat','Sun'],
        marginBottom: 100,
        xaxis: false,
        yaxis: false,
        colors:['transparent']
    }
}).responsive([
    {maxWidth: null, width: 750, height: 300, options: {marginInner: 25, textSize: 14}, callback: function () {},css: {}},
    {maxWidth: 900, width: 500, height: 200, options: {marginInner: 15, textSize: 10}, callback: function () {},css: {}}
]);

// Set the color to red and call the animation
setTimeout(function ()
{
    bar.set('colors', ['red']);
    RGraph.SVG.clear();
    bar.wave();
}, 250);

There's a codepen here which shows this in action:

https://codepen.io/rgraph/pen/JjRxZZv

Posted by Richard at 15:36 on Tuesday 19th January 2021 [link]

OK, I've just thought of a better way than using the setTimeout() function - using the callback function in the responsive configuration.

The updated code is:

bar = new RGraph.SVG.Bar({
    id: 'cc',
    data: [5,9,6,3,2,6,7],
    options: {
        backgroundGridBorder: false,
        backgroundGridVlines: false,
        xaxisLabels: ['Mon','Tue','Wed','Thu','Fri','Sat','Sun'],
        marginBottom: 100,
        xaxis: false,
        yaxis: false
    }
}).responsive([
    {maxWidth: null, width: 750, height: 300, options: {marginInner: 25, textSize: 14}, callback: myAnimate},
    {maxWidth: 900, width: 500, height: 200, options: {marginInner: 15, textSize: 10}, callback: myAnimate}
]);

function myAnimate (obj)
{
    if (!window.callback_function_run) {
        RGraph.SVG.clear();
        obj.wave();

        window.callback_function_run = true
    }
}

And an updated codepen is here:

https://codepen.io/rgraph/pen/dyprGQW

[Replies are closed]