Choosing columns to create a matrix

Hi everyone!

I have a column matrix, A=(28400x1). From this column matrix A, I want to choose the first 200 hundred observations and create a transpose matrix. The tranposed matrix size will be 142x200.

I tried to write down a loop but I am having an issue:

first=1;
last=1;
for i=id(i);
    last=i*200;
    finish=id(i);
    t_child(i,:)=child(first:last,:)';
    first=last+1;
    start=finish+1;
end

Can you please help me to write this loop and create a matrix?

Answer 1

[Image Analyst]

Did you try reshape:

output = reshape(A, 200, [])';

[ebdilden]

You are a lifesaver! Thank you very much!