Displaying 3 results from an estimated 3 matches for "opheliawang".
2008 Nov 29
1
Subset by string name?
...(Other) :313
Please tell me how do I subset a dataset like this to extract trees
from only one or a few families? Thanks a lot!
Ophelia
--
Yung-Ho (Ophelia) Wang
Doctoral Candidate
Department of Geography and the Environment
University of Texas
+1-512-232-1597
opheliawang at mail.utexas.edu
2008 Nov 29
0
Subset by family name?
Sorry to bother everyone---I realized I should have used "==" instead
of "=" in the subset syntax!
Quoting Ophelia Wang <opheliawang at mail.utexas.edu>:
> Hi all,
>
> I thought this should be very simple, but I'm not sure where the
> problem is. I have a .txt data file that contains X and Y coordinates
> of trees and their family names:
>
> "X" "Y" "Mark"
> 0 28 &quo...