Uwe Ligges wrote:
Laura Quinn wrote:
Obviously I have been trying to use the colnames() function!
However, when I try to subscript ie:
for(i in 1:20){ main=paste("Site:",colnames(i),sep="") }
BTW: colnames(i) is the same as colnames(1) in the first iteration of your loop. What do you expect colnames(1) to be?
Uwe Ligges
Example (which you should have provided):
# Generate an example-matrix: X <- matrix(1:9, 3) colnames(X) <- letters[1:3]
# now try to get histograms of columns using a loop: par(mfrow = c(3, 1)) cnames <- colnames(X) for(i in 1:ncol(X)){ hist(X[,i], main = paste("Site:", cnames[i], sep="")) }
Uwe Ligges
this doesn't work! I thought that as.character(colnames(i)) or substitute(colnames(i)) might work, but to no avail...
Laura Quinn Institute of Atmospheric Science School of Earth and Environment University of Leeds Leeds LS2 9JT
tel: +44 113 343 1596 fax: +44 113 343 6716 mail: [EMAIL PROTECTED]
On Wed, 16 Feb 2005, Uwe Ligges wrote:
Laura Quinn wrote:
Hi,
Just a quick query - if I'm creating a function to produce a number of
histograms per page of output (one per column from a matrix), how can I
pass the column name of the matrix into the title (or indeed to form part
of the x-axis label)?
By extracting them using colnames()?
Uwe Ligges
TIA, Laura
Laura Quinn Institute of Atmospheric Science School of Earth and Environment University of Leeds Leeds LS2 9JT
tel: +44 113 343 1596 fax: +44 113 343 6716 mail: [EMAIL PROTECTED]
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