[R] extracting rows and columns from a big matrix
jholtman at gmail.com
Sun Jul 15 20:53:47 CEST 2012
For a start, you are missing a quote and a parenthese on the
statement; probably should be: (another quote was also missing)
n<-subset(m, select=c("X1", "X7", "X12","X15", "X22", "X26", "X31",
"X34", "X39", "X44", "X51", "X58"))
Not sure what you want with the rownames; an example would help and
post with 'dput'.
On Sun, Jul 15, 2012 at 2:47 PM, A J <anxusgo at hotmail.com> wrote:
> Hi there and thanks in advance.
> I have a large symmetrical matrix stored in a text file. After load in R I would like to extract the same number of columns and rows (symmetrical submatrix) using their labels.
> I have tried this code in order to extract columns, but R console gives me the "+" sign at the end of the code, pointing out incomplete command, so it is not working:
> n<-subset(m, select=c("X1", "X7", "X12", X15", "X22", "X26", "X31", "X34", "X39", "X44", "x51", "X58)
> Therefore, I have no tried with row names yet.
> Any suggestions? Sorry for the inconvenience. I have read some information about this but always have the same problem with "+" and I do not have any idea to follow.
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> R-help at r-project.org mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
Data Munger Guru
What is the problem that you are trying to solve?
Tell me what you want to do, not how you want to do it.
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