R 3.3.1
OS X
Colleagues,
I have encountered an unexpected regex problem
I have read an Excel file into R using the readxl package. Columns names are:
COLNAMES <- c("Study ID", "Test and Biological Matrix", "Subject No. ",
"Collection Date",
"Collection Time", "Scheduled Time Point", "Concentration", "Concentration
Units",
"LLOQ", "ULOQ", "Comment”)
As you can see, there is a trailing space in “Subject No. “. I would like to
delete that space. The following works:
sub(“ $”, “”, COLNAMES)
However, I would like a more general approach that removes any trailing
whitespace.
I tried variations such as:
sub("[:blank:]$", "", COLNAMES)
(also, without the $ and ‘space' instead of ‘blank') without success — to my
surprise, characters other than the trailing space were deleted but the
trailing space remained.
Guidance on the correct syntax would be appreciated.
Dennis
Dennis Fisher MD
P < (The "P Less Than" Company)
Phone / Fax: 1-866-PLessThan (1-866-753-7784)
www.PLessThan.com
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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.
