[R] Extraction of columns from two matrices
Hi, I have two matrices with 4885 cols and 36 cols respectively . I would like to extract these 36 columns from the bigger matrix, the column values are different but the column names would be the same.Hence based on the names I would like to perform my operation. So is there any way of extracting this info in an easy way. I have tried names,which,grep,subset none have worked. Could someone help me out here Thanks a ton Nisha [[alternative HTML version deleted]] __ 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.
Re: [R] Extraction of columns from two matrices
Hi:
Is this what you have in mind?
m1 - matrix(rpois(100, 10), nrow = 10, dimnames = list(NULL,
paste('V', 1:10, sep = '')))
m2 - matrix(rpois(40, 10), nrow = 10, dimnames = list(NULL,
paste('V', c(2, 5, 7, 10), sep = '')))
colnames(m1)
colnames(m2)
m1[, colnames(m2)]
HTH,
Dennis
On Wed, May 4, 2011 at 11:10 PM, nisha chandran
slamdunkangel...@gmail.com wrote:
Hi,
I have two matrices with 4885 cols and 36 cols respectively . I would like
to extract these 36 columns from the bigger matrix, the column values are
different but the column names would be the same.Hence based on the names I
would like to perform my operation. So is there any way of extracting this
info in an easy way. I have tried names,which,grep,subset none have worked.
Could someone help me out here
Thanks a ton
Nisha
[[alternative HTML version deleted]]
__
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.
__
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.
Re: [R] Extraction of columns from two matrices
Yea it did...
Thanks :)
On Thu, May 5, 2011 at 3:07 PM, Dennis Murphy djmu...@gmail.com wrote:
Hi:
Is this what you have in mind?
m1 - matrix(rpois(100, 10), nrow = 10, dimnames = list(NULL,
paste('V', 1:10, sep = '')))
m2 - matrix(rpois(40, 10), nrow = 10, dimnames = list(NULL,
paste('V', c(2, 5, 7, 10), sep = '')))
colnames(m1)
colnames(m2)
m1[, colnames(m2)]
HTH,
Dennis
On Wed, May 4, 2011 at 11:10 PM, nisha chandran
slamdunkangel...@gmail.com wrote:
Hi,
I have two matrices with 4885 cols and 36 cols respectively . I would
like
to extract these 36 columns from the bigger matrix, the column values are
different but the column names would be the same.Hence based on the names
I
would like to perform my operation. So is there any way of extracting
this
info in an easy way. I have tried names,which,grep,subset none have
worked.
Could someone help me out here
Thanks a ton
Nisha
[[alternative HTML version deleted]]
__
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.
[[alternative HTML version deleted]]
__
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.
