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Unit: SDL_rchart
Class: TRChart
Declaration: property AvoidDuplicateMarks: boolean;

The property AvoidDuplicateMarks controls whether marks (created by the method MarkAt) are fully displayed or not. If AvoidDuplicateMarks is set to TRUE any mark is suppressed if it is only MinDupMarkDist pixels away from another already rendered mark (which means that marks having a high index in the DataContainer exhibit a higher probability not to be drawn than marks with a lower index).

Hint: As the drawing of marks is rather time consuming, setting AvoidDuplicateMarks to TRUE can speed up graphics by a factor of 10 or more if the chart is cluttered by thousands of marks.

Last Update: 2014-Sep-12