Error in `[.data.frame`... undefined columns selected
On Nov 18, 2012, at 6:34 PM, Eiko Fried wrote:
When I run this script on 9 variables, it works without problems.
Z <-
data
[,c
("s1_1234_m
","s2_1234_m
","s3_1234_m
","s4_1234_m
","s5_1234_m","s6_1234_m","s7_1234_m","s8_1234_m","s9_1234_m"
)]
However, when I run the script on 9 different variables, it does not
work:
Z <-
data
[,c
("d_s1_m
","d_s2_m
","d_s3_m","d_s4_m","d_s5_m","d_s6_m","d_s7_m","d_s8m","d_s9m"
)]
Error in `[.data.frame`(data, , c("d_s1_m", "d_s2_m", "d_s3_m",
"d_s4_m",
:
undefined columns selected
You have probably misspelled one or more the column names. For instance I suspect that one or both of these might be lacking a second "_" : "d_s8m","d_s9m" If you feel thsi is wrong then you at the very least need to offer str(data) BTW, data is the name of a perfectly good function, so naming your dataframe "data" is likely to create confusion.
David. > > The first 9 variables are between 0 and 3, there are no missing > values in > the dataset. > > The second 9 variables are between -3 and 3, there are no missing > values in > the dataset. > > I am pretty new to R and have no idea what could cause this error. > > Thank you > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at 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. David Winsemius, MD Alameda, CA, USA