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15.5.381 minfilter

minfilter(x [[, axes], widths])

Applies a minimum filter to one or more dimensions axes of x, over widths elements. If axes is not specified, then x is treated as a 1d array. widths must be a scalar or an array with the same number of elements as widths and must contain only positive numbers. widths defaults to scalar 3. For elements too close to the edge to yield full-width results, the nearest full-width result is returned.

ordfilter(/minimum) yields the same results as minfilter(), but is much slower.

See also: maxfilter, ordfilter, medfilter