Passing Variable Number of Arrays to a function with varargin

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

Answer 1

[random09983492]

Hi Doug,

varargin starts at index 1, not index 2. That should fix it up.

[Douglas Anderson]

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