zzz <- zzz[-c(1,45,23,321), -c(23,34,45,67)]
On 5/8/07, Silvia Lomascolo <[EMAIL PROTECTED]> wrote: > > I work on Windows, R version 2.4.1 > I need to leave out many rows and columns when reading a matrix. The 'skip' > commands in read.table, seem to be just for skipping rows, if I understand > well, but I need to skip many columns as well. I tried something very simple > and left one row and one column out, but I don't know how to do it for many > rows and columns at a time. > > Example: > > zzz # euclidean distances matrix > > X1 X2 X3 X4 X5 > X1 0 11 12 1 15 > X2 11 0 5 12 3 > X3 12 5 0 8 4 > X4 1 12 8 0 16 > X5 15 3 4 16 0 > > skip.data = zzz [-3, -3] # gives me the same matrix without row 3 and > column 3... how can I tell R to skip more than one row and column? Columns > and rows to be left out are not contiguous The matrix I'm using is fairly > large (335x335), so excel won't read the whole thing, and it's not a > fixed-width txt file, so I cannot use read.fwf. I also don't have access to > Unix, as was suggested to other users to solve this problem. > > > -- > View this message in context: > http://www.nabble.com/Skipping-rows-and-columns-in-large-matrix-tf3712332.html#a10384400 > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > [email protected] 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. > -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem you are trying to solve? ______________________________________________ [email protected] 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.
