Displaying 1 result from an estimated 1 matches for "fpe0164".
2013 Apr 24
2
Sum up column values according to row id
Dear All,
here a problem I think many of you can solve in few minutes.
I have a dataframe which contains values of plot id, diameters, heigths and
basal area of trees, thus columns names are: id | dbh | h | g
head(ipso, n=10) id dbh h g
1 FPE0164 36 13.62 0.10178760
2 FPE0164 31 12.70 0.07547676
21 FPE1127 57 18.85 0.25517586
13 FPE1127 39 15.54 0.11945906
12 FPE1127 34 14.78 0.09079203
6 FPE1127 32 15.12 0.08042477
5 FPE1127 28 14.13 0.06157522
15 FPE1127 27 13.50 0.05725553
19 FPE1127 25 13.28 0.04908739
11 FPE1127 19 11.54 0...