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RGraph is a JavaScript charts library based on HTML5 SVG and canvas. RGraph is mature (over 17 years old) and has a wealth of features making it an ideal choice to use for showing charts on your website.

New datagrid in v6.21

In version 6.21 a new datagrid object has been 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.

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Get the latest version of RGraph (version 6.21, 10th April 2025) 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.

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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.

Not able to redraw an SVG Waterfall chart

Posted by Amir at 21:06 on Wednesday 1st September 2021 [link]

Hi!

I have a SVG waterfall chart which needs to be updated.

I have already tried to use reset or clear but the chart just disapear and doesn't redraw when I call .draw() function.

Thanks!

Posted by Richard at 22:02 on Wednesday 1st September 2021 [link]

I've updated the RGraph.SVG.reset() function so download the updated core library from this link:

https://raw.githubusercontent.com/heyesr/rgraph/main/libraries/RGraph.svg.common.core.js

And try using it and see if it makes a difference.

This is what I was using to get a new waterfall chart displayed - by resetting the SVG tag, removing it from the DOM and creating a new chart from scratch.

<div id="cc" style="width: 500px; height: 500px"></div>

<script>
    // Create the initial chart
    waterfall = new RGraph.SVG.Waterfall({
        id: 'cc',
        data: [1,2,3,4,5,6,7,8,9,10],
        options: {
        }
    }).draw();

    // Clear the canvas after two seconds
    setTimeout(function ()
    {
        RGraph.SVG.reset(waterfall.svg);

    }, 2000);

    // Draw the second chart
    setTimeout(function ()
    {
        waterfall = new RGraph.SVG.Waterfall({
            id: 'cc',
            data: [4,8,6,4,5,-5,-4],
            options: {
            }
        }).draw();
    }, 5000);
</script>

Posted by Amir at 22:09 on Wednesday 1st September 2021 [link]

Thank you! It worked!

Posted by Richard at 22:11 on Wednesday 1st September 2021 [link]

I really shouldn't be as surprised as I am! :-)

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