How can I derive partitions of data sets in for loop

Hello I have a bunch of data-sets. Each one has 4 columns.

I load them as follows:

for i=1:20
   load(['c',num2str(i)])  
end

But then, I want to create a new matrix within a for loop, which will store from each file specific samples from a specific column. What I tried and it failed is the following

for j=1:20
  dd(:,j)=(['c',num2str(j),'(410:910,2)'])
end

Any hints on how to get around this?

Kind Regards

Answer 1

[A Jenkins]

Creating arrays with the number in the name is considered bad programming practice, so instead of fixing your code, most people will recommend you use a different method to store your data. If you MUST do it this way, then you will need to use eval.

But please read the FAQ first.

http://matlab.wikia.com/wiki/FAQ#Programming