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|Home ChartPack RChart Class TRChart Methods MarkErrorBar|
|See also: ActiveLayer, MarkAt|
The method MarkErrorBar displays a symbol at the position [x,y] together with an error bar whose lower and upper boundaries are controlled by the parameters dlower and dupper which indicate the length of the respective part of the error bar. The error bars may either be displayed vertically or horizontally (parameter Dir). The following image shows a series of vertical error bars and two horizontal bars (using different symbols and colors):
The color of the symbol is specified by the property DataColor, the shape of the symbol is controlled 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').