Many ThanKs, The subsecction on R is very clarifying.
Sorry yesterday I was a little confused Many thanks. 2012/9/18 Ben Tupper <btup...@bigelow.org> > Hi, > > On Sep 18, 2012, at 3:25 PM, Bert Gunter wrote: > > > Please read An Introduction to R (or other R tutorial) to learn about > > indexing in R. > > > > ?"[" or ?subset also will tell you how to do it, but they are rather > terse. > > > > > That's a great start, but it might be helpful to provide a bit more > specificity when directing a newcomer like Jose to the Introduction to R. > Perhaps by providing a link to the relevant sections like this... > > Here are nice descriptions of four different ways to index a vector: > > http://cran.r-project.org/doc/manuals/R-intro.html#Index-vectors > > These kinds of indexing techniques can be applied to each dimension of an > array-like object such as your example. You can see in David Winsemius' > nice example that he applied the "logical" type of indexing to the rows of > your data. > > Cheers, > Ben > > > > > > -- Bert > > > > On Tue, Sep 18, 2012 at 12:08 PM, Jose Narillos de Santos > > <narillosdesan...@gmail.com> wrote: > >> Hi I have an output data Data.csv > >> > >> this style: > >> > >> ,"V1","V2","V3" 1,"-9552","9552","C" 2,"0","9653","0" > >> 3,"9614","9614","V" 4,"0","9527","0" 5,"-9752","9752","C" > >> 6,"0","9883","0" 7,"0","9865","0" > >> I want to create a new matrix ommintg all the rows where third column > has > >> 0. > >> > >> There is a way to do it easyly? > >> > >> Many thanks in advance. > >> > >> My final matrix will have: > >> > >> ,"V1","V2","V3"1,"-9552","9552","C" > >> 3,"9614","9614","V"5,"-9752","9752","C" > >> > >> [[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. > > > > > > > > -- > > > > Bert Gunter > > Genentech Nonclinical Biostatistics > > > > Internal Contact Info: > > Phone: 467-7374 > > Website: > > > http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm > > > > ______________________________________________ > > 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. > > Ben Tupper > Bigelow Laboratory for Ocean Sciences > 180 McKown Point Rd. P.O. Box 475 > West Boothbay Harbor, Maine 04575-0475 > http://www.bigelow.org > > > > > > > > [[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.
