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Home ChartPack RChart Class TContourPlot Methods MarkAt | |||||||||||||||
MarkAt |
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The method MarkAt displays a symbol at the position [x,y] using the color DataColor. MarkAt can be drawn in two different coordinate systems: version [1] uses the world coordinates (these are the coordinates shown at the axes of the chart), version [2] uses the screen coordinates in pixels. Using screen coordinates has the effect that the mark remains at a fixed position even if the chart is panned or zoomed. The shape of the symbol is defined by the parameter mk:
If the parameter mk is greater than MAXCANVASMARKS, a character corresponding to its ASCII code is displayed instead of a symbol. Digits can be drawn by setting mk to the codes 200..209 (200 = '0', 209 = '9').
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