in reply to Use of Uninitialized in Concatenation or String Error?

How many ranges do you expect to have? My question is really: can you open all your output files at the same time? If yes, then the solution can be even simpler and not require any sorting.

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Re^2: Use of Uninitialized in Concatenation or String Error?
by ccelt09 (Sexton) on Aug 09, 2013 at 07:23 UTC

    I have eight ranges in total, each of which has it's own text file with all start and end positions listed in adjacent columns like this:

    1 1000001 1000001 2000001 2000001 3000001 3000001 4000001 ...etc until 155000000 is reached

    I planned to use one range per program, each program would print as many output files as" total number of sites divided by size of the window size." So the 1Mb range would be 155 million / 1million = 155 output files. I'm not quite sure how to obtain the output files needed without sorting the original file