Compare two files and remove any lines in the second file when they match values found in the first file

Dear all,

I was wondering if there is a way in matlab to compare to files and remove the lines in file2 that match values in file1.

I used in the past visdiff to compare files, but I would like to understand if, using the same function, I can remove the lines that matches between the two files.

Some of you has some ideas to suggest?

Thanks to whoever help me.

Chiara

Answer 1

[Stephen23]

lines1 = [1,2,3,4;2,4,6,7;2,5,7,8;6,7,4,6]

lines1 = 4x4

1 2 3 4 2 4 6 7 2 5 7 8 6 7 4 6

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lines2 = [2,4,6,7;2,5,7,8]

lines2 = 2x4

2 4 6 7 2 5 7 8

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out = setdiff(lines1,lines2,'rows')

out = 2x4

1 2 3 4 6 7 4 6

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[Chiara Lanzi]

Dear Stephen23,

Thank you, your suggestion worked very well.

Thanks again,

Chiara