I have 10 binary files, each storing a list of numbers. I want to load each file in turn, and then append a cell array y with the numbers in that file. So if each file contains 20 numbers, I want my final cell to be 10x20. How do I do this? The following code does not work:
for i=1:10 % Load an array into variable 'x' y = {y x} end You only need a minor modification to your code:
y = cell(1,10); %// initiallize if possible. Not necessary for ii = 1:10 %// better not use i as a variable (would override imaginary unit) %// Load an array into variable 'x' y{ii} = x; %// fill ii-th cell with x. %// Or use y{end+1} = x if you haven't initiallized y end 
If you are reading strictly numbers and want an array (rather than cells), this could work:
% read CSV numbers from file into array temp = {}; out = []; for i=1:10 % my example files were called input1.txt, input2.txt, etc filename = strcat('input', num2str(i), '.txt'); fid = fopen(filename, 'r'); temp = textscan(fid,'%d','delimiter',','); out(i,:) = cell2mat(temp); fclose(fid); end 'out' is a 10x20 array
