median( x, index )

median( x, y, index )

Executes a median filter on the data-set (1D or 2D).a window of x
points (or y by x in 2D) is moved along the data set, the point are
ordered, and the indexth point is taken as the new point for the
data set.

see also : smooth

NPK Documentation, version 0.995 - 2009-10-14