This property can be used to accelerate the drawing of 2D and 2.5D bar graphs that represent very large data sets. When this property is enabled and there are so many bar risers so that several would be drawn on each pixel of the screen (overdraw), the graphing engine selects and draws only the largest and smallest values. This property has no effect on most data sets.
boolean = getOverdrawSkip();
Can be one of the following:
true skips overdraw. This value is the default.
false does not skip overdraw.