Dear all,
I have a data frame containing the results of an experiment. Like this:
a<-seq(1,4,by=1)
b<-seq(1,2,by=1)
test<-expand.grid(b,a,a)
colnames(test)<-c("replicates","bins", "groups")
test$abc <- rnorm(32)
test$def <- rnorm(32)
test$ghi <- rnorm(32)
test
The following code snippet aggregates the data for one variable and then
draws a plot:
tmp <- aggregate(test$abc, list(
test$bins, test$groups),
mean)
colnames(tmp) <- c("bins", "groups", "abc")
tmp
#pltName <- paste("line_datGrassChem_", "abc", ".eps", sep="")
#postscript(pltName)
labs <- c("-15/-9","-9/-6","-6/-3","-3/0")
sps <- trellis.par.get("superpose.symbol")
sps$pch <- 1:4
trellis.par.set("superpose.symbol", sps)
xyplot( abc ~ bins, data = tmp,
groups = groups, type = list("p", "l"),
scales = list(x = list(labels=labs)),
layout = c(1,1),
key = list(columns = 4,
text = list(paste(unique(tmp$groups))),
points = Rows(sps, 1:4)
)
)
#dev.off()
How can I wrap R code around this code snippet, such that I can repeat
the same code snippet for all other variables in the data frame (i.e.
def, ghi, etc.).
Thanks for your suggestions!
Sander.
--
--------------------------------------------
Dr Sander P. Oom
Animal, Plant and Environmental Sciences,
University of the Witwatersrand
Private Bag 3, Wits 2050, South Africa
Tel (work) +27 (0)11 717 64 04
Tel (home) +27 (0)18 297 44 51
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Email [EMAIL PROTECTED]
Web www.oomvanlieshout.net/sander
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