On Mar 16, 2009, at 5:05 PM, David Winsemius wrote:
So your second dataframe, say DF2, has sample IDs in one of its
columns, say "colnames", (or are they in in the names?)
( Examples and output of str() are requested to avoid exactly such
ambiguity.)
If it is the former, then;
DF1[ , DF2colnames ] # could do it.
^
DF1[ , DF2$colnames ]
--
David Winsemius
On Mar 16, 2009, at 4:41 PM, Jie Zhang wrote:
HI,
I have searched the R-help achive, trying to find a way to sort
columns in a data frame according to a specific list, but not be
able to find a general way to do it.
My data frame contains columns, with each one named from a sample
ID, and each sample was measured in a specific time, generating one
column of data, now I would like to sort the columns according to
the time course, so I have the second data frame containing sample
IDs with time point, but how should I do the sorting?
Thanks a lot!
Jie
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
______________________________________________
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.
