Summary
RGraph demo page: A graduated dark line chart

RGraph demo: A graduated dark line chart

A graduated dark line chart

[No canvas support]

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This goes in the documents header:
<script src="RGraph.common.core.js"></script>
<script src="RGraph.line.js"></script>
Put this where you want the chart to show up:
<canvas id="cvs" width="600" height="250" style="border-radius: 5px; background-color: black">
    [No canvas support]
</canvas>
This is the code that generates the chart:
<script>
    window.onload = function ()
    {
        var line = new RGraph.Line({
            id: 'cvs',
            data: [
                [120,123,121,120,125,122,121,120,118,116,113,114,111,108,106,118,124,123,120,134,135,115,116,125,132,153,148,151,165,164,166,171,178,175,176,179,181,183,183,185,188,189,210,213,220,184,186,145,156,149,132,135,132,133,128,129,126,123,122,115,101,213,256,255,248,245,240,238,233,212,245,255,251,233,251,212,156,157,184,189,194,194,192,201,200,203,214,228,264,233,264,254,258,251,235,239,233,212,244,241],
                [120,123,121,120,125,122,121,120,118,116,113,114,111,108,106,118,124,123,120,134,135,115,116,125,132,153,148,151,165,164,166,171,178,175,176,179,181,183,183,185,188,189,210,213,220,184,186,145,156,149,132,135,132,133,128,129,126,123,122,115,101,213,256,255,248,245,240,238,233,212,245,255,251,233,251,212,156,157,184,189,194,194,192,201,200,203,214,228,264,233,264,254,258,251,235,239,233,212,244,241]
            ],
            options: {
                tickmarks: '',
                shadow: false,
                filled: true,
                fillstyle: [
                    'Gradient(rgba(255,0,0,0.3):rgba(255,0,0,0.8))',
                    'Gradient(rgba(0,0,0,0.75):rgba(0,230,0,0.8))'
                ],
                noaxes: true,
                backgroundGridColor: '#333',
                textColor: 'white',
                labels: [
                    '','Q1','',
                    '','Q2','',
                    '','Q3','',
                    '','Q4',''
                ],
                gutterLeft: 45,
                gutterRight: 35,
                gutterTop: 25,
                gutterBottom: 35,
                scaleZerostart: true
            }
        }).draw();
    };
</script>