Charts cannot be scaled when changing the container size - Official support forum

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 7.20

Version 7.20 (released in June 2026) is the latest version of RGraph and the major change in this version is an update to the default values of properties making for better looking charts without having to set any properties. Read more about this and other changes in the changelog.

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Download

Get the latest version of RGraph (version 7.20, 9th June 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.

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Latest forum posts

These are the latest support forum posts that have been posted or updated.

16th June, Rachel
I have a question about the 3D Bar chart

12th June, Marco
Should I use SVG or canvas for the charts on my website?

9th June, Richard
New version of RGraph: version 7.20

3rd June, Patrick
Question about installing RGraph

1st June, Ouja
How do I add a click event to a bar in my Bar chart?

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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.

I tried many methods, and one of them:

<script>

    function graf(){
        new RGraph.SVG.Bar({...}).wave();
    }

    const resizeObserver = new ResizeObserver((object) => {

        console.dir('...' );//info if action is catch
        object[0].target.innerHTML = '';//...optional no matter
        graf();
    });

    resizeObserver.observe(document.getElementById('chart-container' ) );
</script>
Each time graf() is called again, the graph and its continer of SVG tag disappear from the HTML document. It doesn't matter whether innerHTML cleanup is used. Console.dir('...') is called but with no chart, it disappears. With listeners do the same. It doesn't matter if it's onmouseover etc. No allert is generated, no error, just gone and only console('...') is repeated...
console('...') idicated that action is called propelly but chart is gone and not created by graf() where RGraph.SVG.Bar({...}).wave(); must be called.

PS.
I wrote the question again because I can't add an answer to the original post, there is some error

The stackoverflow link to the question:
https://stackoverflow.com/questions/79529294/rgraph-charts-cannot-be-scaled-when-container-is-resizing