Hi Wade, On 6/30/06, Wade Wall <[EMAIL PROTECTED]> wrote: > I have a text file that I have imported into R. It contains 3 columns and > 316940 rows. The first column is vegetation plot ID, the second species > names and the third is a cover value (numeric). I imported using the > read.table function. > > My problem is this. I need to reformat the information as a matrix, with > the first column becoming the row labels and the second the column labels > and the cover values as the matrix cell data.
Try crosstab(mydata$plotID, mydata$species, mydata$cover) from the ecodist package. Sarah -- Sarah Goslee ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
