[R] Label Rotation when Plotting with Factors

[jim holtman]

Is this what you want:

city <- factor(c("denver", 'cincy', 'chicago','nyc'))
par(mar=c(8,4,1,1))  # enough margin on x-axis
plot(city, 1:4, xaxt='n')
axis(1, at=as.numeric(city),labels=city, las=2)


On Sun, Apr 27, 2008 at 8:15 PM,  <mwittmann at bren.ucsb.edu> wrote:
> Hello,
>
> Sorry if this is a repeat, having trouble finding what I need on archive and am
> a novice with graphics in R!
>
> I have plotted the results of a logit regression by factor, where "city" is the
> factor set name. The problem is city names are too long and I need to rotate
> them 90 degrees along the xaxis. This is what I've tried...
>
> plot(city, predicted.probability, xlab = "city"...)
> axis(1,las = 2)
>
> This does not affect the existing labels.
>
> I have also tried (axes=FALSE), and then rename new with (labels = "Denver",
> etc. ), but it seems as though I need to maintain the factor identities, as it
> give me the error: 'labels' is supplied and not 'at'
>
> Any suggestions?
>
> Thank you,
>
> marion wittmann
>
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-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?