change the order of columns in a matrix

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

[Michael Haderlein]

How do you define "similarity" here?

[maryam]

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]

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.

Answer 1

[khan]

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..

[maryam]

please look at above pictures. do you think i should use clustering method? i dont know any thing about clustering :(