interleaving arrays of different size

So I made a script that can weave two arrays of the same size

 x   = [1 2 3];
 output = zeros(1,2*length(x));
 output(1:2:end) = x;
 y   = [4 5 6];

 output(output ==0 ) = y

But what can I do if I want to weave two arrays of different size.

[Image Analyst]

There are probably lots of algorithms you can use. I don't know which one you want to do. Why do you want to do this anyway? Maybe if we knew more about the need , then we could figure out how to do it. Otherwise, why don't you give an example, like interleaving a 3 element vector into a 10 element vector?

Answer 1

[Guillaume]

Note that for row vectors of equal length, the following is probably more efficient (and works with vectors which contain 0 unlike your algorithm, or NaN or anything):

output = [x; y];
output = output(:).';

As Image Analyst says, you don't say what interleaving vectors of different size mean. Assuming you want all the extra elements of the longer vector together at the end:

commonsize = min(numel(x), numel(y));
output = [x(1:commonsize); y(1:commonsize)];
output = [output(:).', x(commonsize+1:end), y(commonsize+1:end)]

[Guillaume]

Yes, thanks for the correction