Hello,
I have a couple questions about removing rows from a data frame and
creating a new data frame with the removed values. I provided an
example data frame (d) below.
Questions:
1) How can I search for "-999.000" and remove the entire row from data
frame "d"? (all -999 values will be in sd_diff)
2) Can I create a new data frame "d.new" that only contains the removed
rows?
3) How can I remove the last two rows from a data frame. (I used append
command to add two values to the end of the data)
> d
lat.add lon.add PPT.add Z.add sd_dif
1 37.67 -95.48 1.000 368 1.017
2 38.82 -92.22 13.208 383 5.737
3 37.30 -95.50 6.096 130 4.377
4 37.08 -95.57 0.508 106 -999.000
5 38.73 -93.55 6.350 370 6.233
6 38.83 -94.88 0.254 5 8.607
7 38.33 -96.18 0.508 43 8.665
8 38.85 -94.73 1.000 5 -999.000
9 38.71 -93.16 1.016 320 3.717
10 38.95 -95.67 1.000 5 8.553
> d.new
lat.add lon.add PPT.add Z.add sd_dif
1 37.08 -95.57 0.508 106 -999.000
2 38.85 -94.73 1.000 5 -999.000
Thanks for all the help,
Doug
--
---------------------------------
Douglas M. Hultstrand, MS
Senior Hydrometeorologist
Metstat, Inc. Windsor, Colorado
voice: 970.686.1253
email: dmhul...@metstat.com
web: http://www.metstat.com
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
