?? frequency.m
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function f = frequency(vector)%FREQUENCY Simbols frequencies% For vectors, FREQUENCY(X) returns a [1x256] sized double array with frequencies% of simbols 0-255.%% For matrices, X(:) is used as input.%% Input must be of uint8 type, while the output is a double array.% $Author: Giuseppe Ridino' $% $Revision: 1.1 $ $Date: 02-Jul-2004 16:30:00 $% ensure to handle uint8 input vectorif ~isa(vector,'uint8'), error('input argument must be a uint8 vector')end% create ff = histc(vector(:), 0:255); f = f(:)'/sum(f); % always make a row of it
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