filling array with different vectors

Hey all,

i have a problem with filling an array with data. i have 6 vectors that i want to get into 1 array. they arent the same size, so i created an array with zeroes with the size of the largest vector. the code is:

 X = zeros(maxsize,6)
 for i = 1:length(X5)
      X(i,1) = X5(i)
 end
 for i = 1:length(X10)
      X(i,2) = X10(i)
 end
 for 1 = 1:length(X15)     
      X(i,3) = X15(i)
 end
....

The code creates 1 array filled with all the data and some zeroes, which is what i want. The problem is that this is a lot of code for something this simple. I have to create 3 arrays this way.. My question: is there a way to do this more efficient? I'm not that experienced with matlab, so maybe i missed a really easy solution..

Thanks in advance!

Answer 1

[José-Luis]

x1 = rand(1,5);
x2 = rand(1,7);
x3 = rand(1,10);

result = [{x1};{x2};{x3}];
maxsize = max(cellfun(@(x) numel(x),result));
result = cell2mat(cellfun(@(x) {[x,zeros(1,maxsize-numel(x))]},result));

Also, please learn to use cell arrays instead of using variables like x1,x2,...,xn. It will save you very many headaches in the future.

[Rick]

Thanks! Like i said, im not that experienced yet. Didnt even think of cell arrays. I'll look into that for sure.

[José-Luis]

My pleasure.