Dear Monks, Apologies for the previous un-formatted post.Need a bit of help with regards to the following: I have a master list of entries:

List
Gene1
Gene2
Gene3
Gene4
Gene5
Gene6
...

And in a directory I have several files like these
   File1   File2     File3
Gene1   Gene2    Gene3
Gene2    Gene3    Gene4
Gene3    Gene4    Gene5

I want to compare the list with the files and create a binary matrix where '0s' represent the absence of Genes and '1s' represent the presence, like this:
       File1 File2 File3
Gene1 1 0 0
Gene2 1 1 0
Gene3 1 1 1
Gene4 0 1 1
Gene5 0 0 1
Gene6 0 0 0

Can someone please help me out? Thanks in advance for any help. Regards, Anupam

In reply to Creating a binary matrix by perl_user123

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