Thanks for this it worked well.

Your welcome. I enjoyed writing it.

The only problem is, I can't for the life of me figure it out. The multiple calls to map have me perplexed. I spent most of the day reading up about map, and am still a bit confused.

Alexander has provided a breakdown of what's going on here. Feel free to ask if anything needs further explanation.

I know I didn't give an example of my data files, but you were almost spot on.

Your original question was pretty clear. I felt I had a reasonable understanding of what you were after.

If I can ask a favour, how would the code vary, if the gravity and magnetics files had a 6th field, whilst the bathymetry remained at five?

I'm happy to answer that with a little more information.

Finally, on the timing issue, I staggered the date-time fields through the test data to take that into consideration. Within each test file the times are ordered though. If your live data is not necessarily in chronological order, you might want to jumble up the lines in one or more files. I think it should still work but I didn't specifically test for that scenario.

Regards,

Ken

In reply to Re^3: Joining separate data files to make one. by kcott
in thread Joining separate data files to make one. by msexton

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.