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Bars, colored by category

This is a very typical political graphic, where a small amount of data must be clearly presented with consistent coloring.

In this example, the political parties are used as categories to achieve the correct colors. The data values are formatted (with embedded linebreaks) to get the labels shown on each bar.

The Y-axis is not required here, so has been turned off.

SharpPlot sp = new SharpPlot;

Party = new string[]{"Con","Lib","Lab"};
Vote2001 = new int[] {20711,15836,6470};

sp.SetMargins(42,48,36,18);
sp.Heading = "How Ryedale voted\nin 2001!";
sp.HeadingStyle = HeadingStyles.Right;

sp.SetHeadingFont("ARB",16,Color.Navy);
sp.SetValueFont("ARB",12,Color.Navy);
sp.SetLabelFont("ARB",12,Color.Black);

sp.SetColors(new Color[] {Color.Navy,ColorTranslator.FromHtml("#FAB32E"),
         ColorTranslator.FromHtml("#D3342C")});
sp.SetXLabels(Party);

sp.DataStyle = DataStyles.Rows;  // One series per value is required
sp.BarChartStyle = BarChartStyles.ValueTags;
sp.KeyStyle = KeyStyles.NoKey;

sp.ValueTagFormat = "Votes:\n##,###";
sp.YAxisStyle = YAxisStyles.NoAxis|YAxisStyles.ForceZero;
sp.DrawBarChart(Vote2001);

Worked Examples

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