# A skeleton Gauge chart

This goes in the documents header:

    <script src="RGraph.common.core.js"></script>
    <script src="RGraph.common.dynamic.js"></script>
    <script src="RGraph.gauge.js"></script>

Put this where you want the chart to show up:

    <canvas id="cvs" width="300" height="150">
        [No canvas support]
    </canvas>

This is the code that generates the chart:

    <script>
        window.onload = function ()
        {
            var gauge = new RGraph.Gauge({
                id: 'cvs',
                min: 0,
                max: 50,
                value: 46,
                options: {
                    centery: 120,
                    radius: 130,
                    anglesStart: RGraph.PI,
                    anglesEnd: RGraph.TWOPI,
                    needleSize: 85,
                    borderWidth: 0,
                    shadow: false,
                    needleType: 'line',
                    colorsRanges: [[0,10,'red'], [10,20,'yellow'],[20,50,'#0f0']],
                    borderInner: 'rgba(0,0,0,0)',
                    borderOuter: 'rgba(0,0,0,0)',
                    borderOutline: 'rgba(0,0,0,0)',
                    centerpinColor: 'rgba(0,0,0,0)',
                    centerpinRadius: 0,
                    textAccessible: true
                }
            }).grow()

            gauge.canvas.onclick = function (e)
            {
                var value = gauge.getValue(e);

                if (typeof value === 'number') {
                    gauge.value = value;
                    gauge.grow();
                }
            }
        };
    </script>

« Back