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Message from discussion How do i create a loop for this?
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us  
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 More options Jan 28 2009, 11:28 am
Newsgroups: comp.soft-sys.matlab
From: "us " <u...@neurol.unizh.ch>
Date: Wed, 28 Jan 2009 16:28:03 +0000 (UTC)
Local: Wed, Jan 28 2009 11:28 am
Subject: Re: How do i create a loop for this?
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"Xiao"

> Is it possible to perform an addition of the content (content of row 3 col 3 + content of row 4 col 3) and display the results as well...

the LAST one of the solutions...

% the data
     c={
          [],[],[],[]
          [],[1,2],[],[-1,-2]
          [],[],[3,4],[-3,-4]
          [],[],[5,6],[]
     };
% the engine
     ix=sum(~cellfun(@isempty,c))<=1;
     c(:,ix)={[]};
     [rx,cx]=find(~cellfun(@isempty,c));
     cu=unique(cx);
     r=arrayfun(@(x) sum([c{:,x}]),cu);
% the result
     disp(r);
%{
      18 % col# 3
     -10 % col# 4
%}

us


 
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