[R] How to suppress factor labels

[James Rome]

I think the issue is that the x axis is a factor. How would ggplot2 know

which ones to drop? So it labels them all.
If I do the following, the labels get better:
    pp = qplot(time, error, data=times, size=I(1), geom="jitter",
main=title,
        ylab="Error (min)", xlab="Time before ON (min)", alpha=I(1/10),
        ylim=c(-30,40))
    pp2 = pp + with(times, facet_wrap(~ runway, ncol=2))
        + scale_x_discrete(
            breaks = c("0", "5", "10",
"15","20","25","30","35","40","45","50","55","60"),
            labels=c("0", "5", "10",
"15","20","25","30","35","40","45","50","55","60"))
    print(pp2 + geom_boxplot(alpha=.5, color="blue",
outlier.colour="green", outlier.size=1))

But this ruins the boxplot--I get one box instead of a box at every minute.


On 6/8/2011 3:59 PM, Ista Zahn wrote:

Hi James,
It's hard for me to see where the problem might be. Please post the
data using dput() or even better, make a simplified example that
illustrates the problem without all the other stuff going on. Chances
are that in the process of making a simplified example you will find
the problem yourself.

Best,
Ista

On Wed, Jun 8, 2011 at 3:41 PM, James Rome <jamesrome at passur.com> wrote:


> I actually tried that, and get the same plot if I am using it properly:
>
>    title=paste("Fitted RETA predictions for ", airport, " the week of
> ", date, sep="")
>    pp = qplot(time, error, data=times, size=I(1), geom="jitter",
> main=title,
>        ylab="Error (min)", xlab="Time before ON (min)", alpha=I(1/10),
> color=times$runway,
>        ylim=c(-30,40))
>    pp2 = pp + with(times, facet_wrap(~ runway, ncol=2))
>        + scale_x_discrete(breaks = seq(from=0, to=60, by=5),
> labels=seq(from=0, to=60, by=5))
>    print(pp2 + geom_boxplot(alpha=.5, color="blue",
> outlier.colour="green", outlier.size=1))
>
> The x-axis is unchanged.
>
> Thanks,
> Jim
> On 6/8/2011 3:31 PM, Ista Zahn wrote:
>
> Hi Jim,
>
> See ?scale_x_discrete
>
> Best,
> Ista
>
> On Wed, Jun 8, 2011 at 3:26 PM, James Rome <jamesrome at gmail.com> wrote:
>
>> I am using ggplot2 to make a boxplot that overlays a scatterplot:
>> pp = qplot(time, error, data=times, size=I(1), geom="jitter", main=title,
>>        ylab="Error (min)", xlab="Time before ON (min)", alpha=I(1/10),
>> color=times$runway,
>>        ylim=c(-30,40))
>>    pp2 = pp + with(times, facet_wrap(~ runway, ncol=2))
>>    print(pp2 + geom_boxplot(alpha=.5, color="blue",
>> outlier.colour="green", outlier.size=1))
>> The x variable is a factor for every minute from 0:60. My problem is
>> that ggplot2 labels every factor value on the x axis, and they overlap.
>> How can I make ggplot2 label only, say every 5th factor value on the x axis?
>>
>> Thanks,
>> Jim
>>
>> ______________________________________________
>> 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.
>>
>
>