How can I derive partitions of data sets in for loop

Question

Ioannis 2013-10-9

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/89708-how-can-i-derive-partitions-of-data-sets-in-for-loop

回答： A Jenkins 2013-10-9

采纳的回答： A Jenkins

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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

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Answer 1

A Jenkins 2013-10-9

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/89708-how-can-i-derive-partitions-of-data-sets-in-for-loop#answer_99154

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