Passing Variable Number of Arrays to a function with varargin

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Douglas Anderson
Douglas Anderson 2013-6-20
Hello,
I would like to have a function that will take either one array or a number of them merged into one array within the function, which will then be plotted. The beginning of it is as follows:
function temp_array = fft100v(first_array,varargin)
% Plots the first 100 frequencies in in_array
% This assumes that sample interval is 1000 samples per second
% If length of array is shorter or longer than 1000, pad or cut it as
% appropriate
len_orig = length(first_array);
if nargin > 1
for n = 2:nargin
temp = varargin{n};
if length(temp) ~= len_orig
error('Arrays not of equal length');
end
end
end
The program craps out at the line "temp = varargin{n}" for more than one input with "Index exceeds matrix dimensions". It DOES have the curly braces on the "n". Guess I don't know enough about cell arrays.
Thanks.
Doug Anderson

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采纳的回答

random09983492
random09983492 2013-6-20
Hi Doug,
varargin starts at index 1, not index 2. That should fix it up.
  1 个评论
Douglas Anderson
Douglas Anderson 2013-6-20
Thanks!
I had to figure out how nargin relates also.
if nargin > 1
for n = 1:nargin-1
temp = varargin{n};
if length(temp) ~= len_orig
error('Arrays not of equal length');
end
end
end
The loop can't go to the total nargin value, since the first one is also counted in the nargin!
Much appreciated.
Doug

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