Selecting unique values

Chris Angelico rosuav at gmail.com
Tue Jul 26 10:43:09 CEST 2011


On Tue, Jul 26, 2011 at 8:03 AM, Kumar Mainali <kpmainali at utexas.edu> wrote:
> Greetings
>
> I have a dataset with occurrence records of multiple species. I need to get
> rid of multiple listings of the same occurrence point for a species (as you
> see below in red and blue typeface). How do I create a dataset only with
> unique set of longitude and latitude for each species? Thanks in advance.
> Species_name Longitude Latitude
> Abies concolor -106.601 35.868
> Abies concolor -106.493 35.9682
> Abies concolor -106.489 35.892
> Abies concolor -106.496 35.8542
> Accipiter cooperi -119.688 34.4339
> Accipiter cooperi -119.792 34.5069
> Accipiter cooperi -118.797 34.2581
> Accipiter cooperi -77.38333 39.68333
> Accipiter cooperi -77.38333 39.68333
> Accipiter cooperi -75.99153 40.633335
> Accipiter cooperi -75.99153 40.633335

Pass the file through the 'uniq' utility, on Unix. Easy.

ChrisA



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