[R] How to sort a grouped barchart?
dwinsemius at comcast.net
Fri May 7 15:05:02 CEST 2010
On May 6, 2010, at 9:01 PM, LeandroTV wrote:
> I have a barchart very similar to the example on the function
> however, I want to sort the bars according one group in one panel.
> barchart(yield ~ variety | site, data = barley,
> groups = year, layout = c(1,6),
> ylab = "Barley Yield (bushels/acre)", auto.key=list(),
> scales = list(x = list(abbreviate = TRUE,
> minlength = 5)))
> I want to sort the yield value, in "waseca" site (e.g.), according
> the group
> of 1931. How can I do this???
You can reverse the year factor variable levels before plotting:
barley$year.r <- factor(barley$year, levels=rev(levels(barley$year)) )
... and then use the reversed factor. I don't think it would be fair
to the reader to reverse the positions in just one panel. You did not
say so but I suspect that you wanted to ask something along the lines
sort the plotting order of the "variety" by the yield of the
variety in one of the years, perhaps 1931?
> and provide commented, minimal, self-contained, reproducible code.
David Winsemius, MD
West Hartford, CT
More information about the R-help