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.net Powerful JavaScript charts
About
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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Download
Get the latest version of RGraph (version 6.19, 28th September 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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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.

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The lineJoin property

The lineJoin property is used to set how lines are drawn when they are connected. There are three possible values: bevel round and miter. Initially, the setting is miter. Below are examples of the different types.

An example of the different styles of lineJoin

An example

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

        // Translate by half a pixel - this makes lines look crisp
        context.translate(0.5, 0.5);
    
        context.beginPath();
        context.lineJoin = 'bevel';
        context.lineWidth = 25;
        context.moveTo(50,150);
        context.lineTo(100,50);
        context.lineTo(150, 150);
        context.stroke();
    }
</script>