Nevil Amos wrote:
I am trying to create a heap of boxplots, by looping though a series
of factors and variables in a large data.frame suing paste to
constrcut the facto and response names from the colnames
I thought I could do this using get()
however it is not working what am I doing wrong?
You don't give a reproducible example, this makes it hard to answer your
question.
But not really in response to your question, take a look at histogram
from the lattice package or geom_boxplot from the ggplot2 package. These
functions can do all the work for you of drawing boxplots for a series
of factors and variables in a large data.frame. This saves you a lot of
time.
cheers,
Paul
thanks
Nevil Amos
sp.codes=levels(data.all$CODE_LETTERS)
for(spp in sp.codes) {
data.sp=subset(data.all,CODE_LETTERS==spp)
responses = colnames(data.all)[c(20,28,29,19)]
#if (spp=="BT") responses = colnames(data.all)[c(19,20,26:29)]
groups=colnames (data.all)[c(9,10,13,16,30)]
data.sp=subset(data.all,CODE_LETTERS==spp)
for (response in responses){
for (group in groups){
r<-get(paste("data.sp$",response,sep=""))
g<-get(paste("data.sp$",group, sep=""))
print (r)
print(g)
boxplot(r ~g)
}}}
Error in get(paste("data.sp$", response, sep = "")) :
object 'data.sp$Hb' not found
______________________________________________
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.
--
Drs. Paul Hiemstra
Department of Physical Geography
Faculty of Geosciences
University of Utrecht
Heidelberglaan 2
P.O. Box 80.115
3508 TC Utrecht
Phone: +3130 274 3113 Mon-Tue
Phone: +3130 253 5773 Wed-Fri
http://intamap.geo.uu.nl/~paul
http://nl.linkedin.com/pub/paul-hiemstra/20/30b/770
______________________________________________
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.
