Flag determining if, in case of gradient brush, the column should have gradient that is interpolated from minimum to maximum values (YES), or it should be reinterpolated in each value (NO). The default value is NO.
If this flag is NO and the column series has gradient brush, the gradient will probably look like a saw repeating the shape of the columns fence. If this flag is YES, the gradient looks linear and do not repeat the shape of the columns fance.