On 20.10.2011 18:03, Henri-Paul Indiogine wrote:
Hi!
I have 2 problems in drawing a stacked bar plot:
(1) This is a stacked bar plot with more than 100 bars next to each
other. So there should not be names at the bottom of the bars because
the bars are too narrow. I tried arg.names=NULL but that does not
work because R uses the row names from the data.frame.
How can I suppress the placing of names below the bars?
It is the argument *names.arg* and it has to be set to NA.
(2) The position of the legend is problematic. The legend is big, more
than 20 items. It overlays the bars themselves and makes the plot
unreadable. I would like to move it outside the plot and have tried
legend("topleft") but R complains about missing information.
arrange it outside by, e.g. increasing the size of margins (see argument
"mar" in ?par) and place a separate legend (see ?legend) into the
margins (see xps argument in ?par).
Here is what I have so far
########################################################
barplot(t(file.codes),
+ beside = FALSE,
+ col = rainbow(ncol(file.codes)), names.arg=NULL,
+ legend = FALSE,
+ main = "Presidential documents - Codes per document",
+ xlab = "document", ylab = "number of codings")
#######################################################
Not reproducible since we do not have file.codes.
Uwe Ligges
Any ideas?
Thanks,
Henri-Paul
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