> -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of Trevor Carey- > Smith > Sent: Monday, December 12, 2011 4:22 PM > To: [email protected] > Subject: Re: [R] Boxplot of multiple vectors with different lengths > > On 12/13/2011 12:14 PM, Ryan Utz wrote: > > My vectors names are neatly stored in a character vector of their own. This > > happens based on how they were imported. So, say I have vectors a, b and c, > > all with numeric-only contents. Then I have another vector, say z, that > > looks like this: > > > > z<-c("a","b","c") > > > > Is there really no way to tell boxplot to plot the contents of a, b and c > > while only referencing z?! > > here is one solution if I understand your requirement: > > aa <- rnorm(20) > bb <- runif(30) > cc <- rexp(40) > z <- c("aa","bb","cc") > l <- lapply(z,get) > boxplot(l) > > Although as Sarah said, this will fail if you use 'c' as a variable name > as the list would then contain the function c() rather than the variable > you previously defined.
That is why my almost identical suggestion added the argument envir=environment() to the lapply command. It makes get() look in the caller-of-lapply's environment first so it picks up the local c. Bill Dunlap Spotfire, TIBCO Software wdunlap tibco.com > > Regards, > Trevor > > > Why is this so difficult?? Again, this is part > > of an automated process, so the number of incoming data sets, etc. will > > vary, which is why I'm seeking a solution this way. > > > > > > > > On Mon, Dec 12, 2011 at 4:09 PM, Vining, Kelly<[email protected] > >> wrote: > > > >> Ryan, > >> Do you necessarily have to use "list"? Have you tried the usecols=TRUE > >> option in boxplot? > >> > >> Cheers, > >> --Kelly V. > >> > >> -----Original Message----- > >> From: [email protected] [mailto:[email protected]] > >> On Behalf Of Ryan Utz > >> Sent: Monday, December 12, 2011 1:24 PM > >> To: [email protected] > >> Subject: [R] Boxplot of multiple vectors with different lengths > >> > >> Hello, > >> > >> I'm attempting to write a code that automatically imports data from > >> different files (with different lengths-just one variable) and makes tidy > >> box plots for comparison. I can successfully import the data and create a > >> list of the vectors I want to compare. But I cannot, for the life of me, > >> figure out how to generate box plots using the "list" option. Suppose these > >> are my data: > >> > >> a<-c(1,1,1,1,2,3,2,1,2,3) > >> b<-c(2,2,2,3,4,4,4,3,3) > >> c<-c(4,3,3,2,3,4,5,3,3,3,4,4,5,6,3,2) > >> > >> And this is my list of the vectors I'm interested in: > >> > >> z<-list(c("a","b","c")) > >> > >> Well, this successfully generates the kind of boxplot I want: > >> > >> boxplot(a,b,c) > >> > >> But this does not: > >> > >> boxplot(z) > >> > >> Because I'm trying to write an automatic plot-generator as the amount of > >> data I'm working with will typically vary, I need to write this to handle > >> any number of data vectors. > >> > >> I've tried every imaginable means of tweaking the name of "z", with zero > >> success. And I've scoured the help pages for about 45 minutes (just to > >> preempt any "read the help" responses). Please help! > >> > >> Thanks, > >> Ryan > >> > >> -- > >> > >> Ryan Utz, Ph.D. > >> Aquatic Ecologist/STREON Scientist > >> National Ecological Observatory Network > >> > >> Home/Cell: (724) 272-7769 > >> Work: (720) 836-2488 > >> > >> [[alternative HTML version deleted]] > >> > >> ______________________________________________ > >> [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. > >> > > > > > > > -- > Please consider the environment before printing this email. > NIWA is the trading name of the National Institute of Water & Atmospheric > Research Ltd. > > ______________________________________________ > [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. ______________________________________________ [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.
