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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | % STD STD Standard Deviation Function
%
% Usage
%
% Computes the standard deviation of an array along a given dimension.
% The general syntax for its use is
%
% y = std(x,d)
%
% where x is an n-dimensions array of numerical type.
% The output is of the same numerical type as the input. The argument
% d is optional, and denotes the dimension along which to take
% the variance. The output y is the same size as x, except
% that it is singular along the mean direction. So, for example,
% if x is a 3 x 3 x 4 array, and we compute the mean along
% dimension d=2, then the output is of size 3 x 1 x 4.
% Copyright (c) 2002-2007 Samit Basu
% Licensed under the GPL
function y = std(varargin)
y = sqrt(var(varargin{:}));
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