R help - Apr 2008 - Label Rotation when Plotting with Factors

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

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
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>


-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?