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## Copyright (C) 1999 Paul Kienzle
##
## This program is free software and may be used for any purpose. This
## copyright notice must be maintained. Paul Kienzle is not responsible
## for the consequences of using this software.
## Clip values outside the range to the value at the boundary of the
## range.
##
## X = clip(X)
## Clip to range [0 1]
##
## X = clip(X, hi)
## Clip to range [0 hi]
##
## X = clip(X, [lo hi])
## Clip to range [lo hi]
function x = clip (x, range)
if (nargin == 2)
if (length(range) == 1)
range = [0, range];
end
elseif (nargin == 1)
range = [0, 1];
else
usage("X = clip(X [, range])");
end
[i, j] = size(x);
x = reshape(x, i*j, 1);
clip = find(x>range(2));
if clip != []
x(clip) = range(2);
end
clip = find(x<range(1));
if clip != []
x(clip) = range(1);
end
x = reshape(x, i, j);
endfunction
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