On 23 Mar 2009, at 17:39, Jason Rupert wrote:
I would like to replace a few varaibles within a data frame.
For example, in the dataframe below (contrived) I would like to
replace the current housesize value only if the Location is HSV.
However, I would like to leave the other values intact.
How about,
test_data2_df[test_data2_df$Location=="HSV", ] # these are the values
to change
test_data2_df$housesize[test_data2_df$Location=="HSV"] <- 28.3 # or
whatever values
HTH,
baptiste
I tried "ifelse", but I don't really need the else condition.
test_data2_df<-data.frame(Variables=c("SQR Footage","SQR
Footage","SQR Footage","SQR Footage","SQR Footage","SQR
Footage","SQR Footage","SQR Footage","SQR Footage","SQR
Footage","SQR Footage","SQR Footage","SQR Footage","SQR
Footage","SQR Footage"),HouseSize=c(10, 20, 30, 40, 50, 15, 25, 35,
45, 55, 18, 28, 38, 48, 58), Lot=c(1, 2, 3, 4, 5, 10, 20, 30, 40,
50, 11, 21, 31, 41, 51), Location=c("HSV", "ATH", "HSV", "ATH", "FLO",
"HSV", "ATH", "HSV", "ATH", "FLO",
"HSV", "ATH", "HSV", "ATH",
"FLO"))
Moreover, I want to preserve the rest of the values within the
data. I thought some combination using the subset would get me
there, but I ended up with a long and ungangly looking code.
Thanks for any help that is offered.
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_____________________________
Baptiste Auguié
School of Physics
University of Exeter
Stocker Road,
Exeter, Devon,
EX4 4QL, UK
Phone: +44 1392 264187
http://newton.ex.ac.uk/research/emag
______________________________________________
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.
