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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 show charts on your website.

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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 (£99) commercial license available.

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Get the latest version of RGraph (version 6.16) from the download page. There's also older versions available, minified files and links to cdnjs.com hosted libraries.

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The moveTo function

The moveTo function is used whilst drawing paths to the canvas to move the 'pen' to a new set of coordinates without drawing a line between them. Like the lineTo function, only a single pair of X/Y coordinates is given to the function. With some of the path functions (eg bezierCurveTo, quadraticCurveTo) the first point is specified by using the moveTo function.

Arguments to the function

An example

<script>
    window.onload = function ()
    {
        var canvas  = document.getElementById("cvs");
        var context = canvas.getContext('2d');

        context.beginPath();
        context.moveTo(100, 100);
        context.lineTo(200, 200);
        context.stroke();
    }
</script>