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RGraph is a JavaScript charts library based on HTML5 SVG and canvas. RGraph is mature (over 15 years old) and has a wealth of features making it an ideal choice to use for showing charts on your website.

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Get the latest version of RGraph (version 6.18, 1st June 2024) 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.

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Can the SVG Bar chart have a watermark image?


Posted by watermark in bar chart at 09:36 on Friday 19th February 2021 [link]
can we add watermark in SVG Bar chart ? diagonally ?

Posted by Richard at 12:53 on Friday 19th February 2021 [link]
You can add a background image like this:

bar = new RGraph.SVG.Bar({
    id: 'cc',
    data: [5,9,6,3,2,6,7],
    options: {
        marginInner: 20,
        xaxisLabels: ['Mon','Tue','Wed','Thu','Fri','Sat','Sun'],
        backgroundGridVlines: false,
        backgroundGridBorder: false,
        xaxis: false,
        yaxis: false,
        backgroundImage: '/images/logo.png',
        backgroundImageStretch: false,
        backgroundImageX: 35,
        backgroundImageY: 35,
        backgroundImageW: 64,
        backgroundImageH: 64,
    }
}).draw();

// Rotate the image 45 degrees about the coordinates (67,67)
 bar.svg.all.getElementsByTagName('image')[0].setAttribute('transform','rotate(45 67 67)');

Is that the sort of thing you wanted?

[Replies are closed]