One more question Jim. What if the names of the columns are not a combination of a letter and an integer? Suppose they are just "names" of craniometric characteristics, like "nasal length", "orbital width" etc? Thanks for you reply.
Michael ----- Original Message ----- From: "jim holtman" <[EMAIL PROTECTED]> To: "Ing. Michal Kneifl, Ph.D." <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Sunday, March 16, 2008 11:44 PM Subject: Re: [R] How to assign text string as object? > Take a look at 'matplot'. If you want to loop, try > > for (i in 1:16) plot(df[[paste("V", i, sep="")]] ~ df$AGE) > > On 3/16/08, Ing. Michal Kneifl, Ph.D. <[EMAIL PROTECTED]> wrote: >> I have a problem I cannot get over for a long time. Imagine I have a >> data frame with 17 colums. 16 of them are craniometric variables of >> Cervus elaphus and one contains age. >> The data frame has 83 rows. >> I want to write a loop which plots the values of each craniometric >> variable against the age. The names of columns are V1, V2, V3, etc... >> What I have done till now was writing this: >> >> layout(matrix(1:16,4,4)) >> plot(V1~AGE) >> plot(V2~AGE) >> . >> . >> . >> . >> etc. >> How to assign a string in the loop so that the program understands it >> is an object? >> Thank for your help in advance. >> >> Michael >> >> ______________________________________________ >> 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. >> > > > -- > Jim Holtman > Cincinnati, OH > +1 513 646 9390 > > What is the problem you are trying to solve? ______________________________________________ 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.