Thank you everybody. I can extract unique values now. - Kumar
On Tue, Jul 26, 2011 at 2:38 PM, Dan Stromberg <drsali...@gmail.com> wrote: > > Some good stuff has already been suggested. Another possibility is using a > treap (not a duptreap but a treap): > > http://stromberg.dnsalias.org/~dstromberg/treap/ > > If you just need things unique'd once, the set + yield is an excellent > option. If you need to keep things in order, but also need to make changes > now and then, the treap is very good. > > On Mon, Jul 25, 2011 at 3:03 PM, Kumar Mainali <kpmain...@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 >> >> - Kumar >> >> -- >> >> http://mail.python.org/mailman/listinfo/python-list >> >> >
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