Hi, could someone give me pointers/pseudocode for converting a tab-delimited file into a different format?

My data looks like this:

Name_1    TT    XL_927799.1
Name_1    PA    PA_392
Name_1    AT    ZX_003039195.1
Name_2    TT    XL_931313.1
Name_2    AT    ZX_003043016.1
Name_3    TT    XL_929616.1
Name_3    PA    PA_5040
Name_3    PA    PA_6336
Name_4    TT    XL_928294.1
Name_4    PA    PA_917

[download]

And I want to get it into this format:

PA                TT            AT
PA_392            XL_927799.1   ZX_003039195.1
                  XL_931313.1   ZX_003043016.1
PA_5040,PA_6336   XL_929616.1
PA_917            XL_928294.1

[download]

The information in each row is separated by tabs and any field containing more than one eg Name_3 has two PA entries, will produce both entries separated by a comma.

If there is no entry a blank should be left or I suppose "No corresponding entry"

Thanks

In reply to reformatting tab delimited file by garyboyd

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