Zoppoli, Gabriele (NIH/NCI) [G]
2010-May-28 02:43 UTC
[R] how to create automatically names for vectors in a loop?
Hi, I want to generate a number of vectors and store them with different names, like this: x=1 while (x<100) { vector#x# = rnorm(100) x=x+1 } where each vector has, at its hand, instead of #x# a number which goes from 1 to 99. How can I do this? Thanks Gabriele Zoppoli, MD Ph.D. Fellow, Experimental and Clinical Oncology and Hematology, University of Genova, Genova, Italy Guest Researcher, LMP, NCI, NIH, Bethesda MD Work: 301-451-8575 Mobile: 301-204-5642 Email: zoppolig at mail.nih.gov
Erik Iverson
2010-May-28 03:02 UTC
[R] how to create automatically names for vectors in a loop?
Zoppoli, Gabriele (NIH/NCI) [G] wrote:> Hi, > > I want to generate a number of vectors and store them with different names, like this: > > x=1 > > while (x<100) > > { > vector#x# = rnorm(100) > x=x+1 > } > > where each vector has, at its hand, instead of #x# a number which goes from 1 to 99. > > How can I do this? >?paste and ?assign but almost surely you'd be better off storing these vectors in a list or matrix.
Lukas Schefczyk
2010-May-28 03:05 UTC
[R] how to create automatically names for vectors in a loop?
Hallo, x=1 while (x<100) { vectorx<- rnorm(100) assign(paste("vector",x,sep=""),vectorx) x=x+1 } ls() HTH Lukas Schefczyk -------------------------------------------------- From: "Zoppoli, Gabriele (NIH/NCI) [G]" <zoppolig at mail.nih.gov> Sent: Friday, May 28, 2010 4:43 AM To: <r-help at r-project.org> Subject: [R] how to create automatically names for vectors in a loop?> Hi, > > I want to generate a number of vectors and store them with different > names, like this: > > x=1 > > while (x<100) > > { > vector#x# = rnorm(100) > x=x+1 > } > > where each vector has, at its hand, instead of #x# a number which goes > from 1 to 99. > > How can I do this? > > Thanks > > Gabriele Zoppoli, MD > Ph.D. Fellow, Experimental and Clinical Oncology and Hematology, > University of Genova, Genova, Italy > Guest Researcher, LMP, NCI, NIH, Bethesda MD > > Work: 301-451-8575 > Mobile: 301-204-5642 > Email: zoppolig at mail.nih.gov > ______________________________________________ > R-help at 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.
jim holtman
2010-May-28 12:38 UTC
[R] how to create automatically names for vectors in a loop?
Before polluting your workspace with objects, look at how you might use a 'list' to collect them all together, especially if you are going to do processing on them later as a group, or if you want to easily save/load them. You could do the following:> myList <- list() > for (i in 1:10) myList[[paste('funny name', i)]] <- runif(10) > > myList$`funny name 1` [1] 0.26550866 0.37212390 0.57285336 0.90820779 0.20168193 0.89838968 0.94467527 0.66079779 0.62911404 [10] 0.06178627 $`funny name 2` [1] 0.2059746 0.1765568 0.6870228 0.3841037 0.7698414 0.4976992 0.7176185 0.9919061 0.3800352 0.7774452 $`funny name 3` [1] 0.93470523 0.21214252 0.65167377 0.12555510 0.26722067 0.38611409 0.01339033 0.38238796 0.86969085 [10] 0.34034900 $`funny name 4` [1] 0.4820801 0.5995658 0.4935413 0.1862176 0.8273733 0.6684667 0.7942399 0.1079436 0.7237109 0.4112744 ......... On Thu, May 27, 2010 at 10:43 PM, Zoppoli, Gabriele (NIH/NCI) [G] <zoppolig at mail.nih.gov> wrote:> Hi, > > I want to generate a number of vectors and store them with different names, like this: > > x=1 > > while (x<100) > > ?{ > ? vector#x# = rnorm(100) > ? x=x+1 > } > > where each vector has, at its hand, instead of #x# a number which goes from 1 to 99. > > How can I do this? > > Thanks > > Gabriele Zoppoli, MD > Ph.D. Fellow, Experimental and Clinical Oncology and Hematology, University of Genova, Genova, Italy > Guest Researcher, LMP, NCI, NIH, Bethesda MD > > Work: 301-451-8575 > Mobile: 301-204-5642 > Email: zoppolig at mail.nih.gov > ______________________________________________ > R-help at 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. >-- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve?