change the order of columns in a matrix

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maryam 2015-2-18

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评论： Michael Haderlein 2015-2-18

hi friends. i have a 8000*300 matrix. i want to change the order of columns so that the most similar columns stand together. could any body help me on this? thank you

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maryam 2015-2-18

for example these are 2 pictures of column 21 and 53. i want data of these columns beside each other. i dont know how to define similarity. any suggestion?

Michael Haderlein 2015-2-18

What is the feature which is important? How do the other columns look like? Does "similarity" mean that you have a strong gradient after x=4000? Does it mean the plateau is around 0.7? Does it mean you have a negative peak after the first big incline? There are so many possibilities, we cannot know what's the point here.

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khan 2015-2-18

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What do you mean by most similar? Although one thing is that you can order it in aascending or descending order. You will have most similar together..