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A Simple Dial to Show One Value

The Dial or Gauge chart is often used to present a single value (maybe a benchmark index of company performance) in the context of an expected or desired range. The value on its own may mean very little (maybe our production plant made 23% rejects last week) until it is set in the context of the expected range.

This chart has a simple pointer, and adds a datum line to show a reasonable maximum value. Note that the x-range is used to range the dial here, and is always required as SharpPlot has no way to guess the correct range from a single data point.

SharpPlot sp = new SharpPlot;

sp.SetMargins(24,24,12,12);
sp.Heading = "Simple Pointer and Scale";
sp.SetAxisStyle(Color.Navy,LineStyle.Solid,1.2);
sp.SetXLabelFont("Arial",12,FontStyle.Bold);

sp.SetPenWidths(2);
sp.SetXRange(30);
sp.SetXTickMarks(5,4);
sp.SetDatumLineStyle(Color.Red,LineStyle.Dash,0.8);
sp.SetXDatumLines(25);

sp.DrawDialChart(17);

Worked Examples

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