Hi Ig, thank you The data in file, is a lot larger and with longer group names between the ''s. this data file is to be only read in and the code will be used to sort it as described in my 1st note. The X-sorted/then cond Y-sorted version is then saved to a new file. The original file is untouched. The 'Groups' can remain in whatever original order they were in, or they can be sorted if that is easier. (doesnt matter). To recap the X's for each 'Group' are sorted Ascending, then for each new X value the direction (ascend/decend) of the Y sort is changed. My other question was the proper way to call in the Data file in PERL, and how to print to another file. I gave my CODE guesses on how to do this, in my other email note. How far off was I on my guesses? Can you fix or confirm the code I thought I would need to do? thanks
Im sorry to bother you again but I just realized the 'Group' names may contain
Alpha numeric characters 'aaa3' '5aaa2' '43bbb' etc. Sorry I didnt
mention this before. Will this affect the type of code sort. By the way these
groups dont need to be sorted, they can be left in the original order, only
their XYs need sorting.

In reply to Re^2: Sort then conditionally sort by lukez
in thread Sort then conditionally sort by lukez

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