DistortMetric
Returns a pixmap with each pixel randomly translated vertically and horizontally.
Syntax

DistortMetric(pm, x[, y])

pm
is a pixmap 
x
andy
are nonnegative integers

Description
DistortMetric(pm, x, y)
returns pm
with each pixel randomly translated a maximum distance of x
and y
horizontally and vertically, respectively. If omitted, y
defaults to x
.
Specifically, each pixel is swapped with a pixel in its rectangular neighbourhood specified by the x
and y
.
Examples
DistortMetric(ExampleData("rabbit"), 10)
DistortMetric(ExampleData("rabbit"), 100)