And you got a reply on the ggplot2 list, which is why you're asked not
to cross-post.
For those who are wondering, geom_boxplot() in the ggplot2 package
will by default plot outside points along the same line as the boxplot
whiskers at their actual values. The gentleman jittered the original
points in a separate call to geom_point(), so the result is that the
outside points are plotted twice - once along the whisker lines (in
black) from geom_boxplot() and once as jittered points with alpha
transparency from geom_point(). Since jitter can be positive or
negative in either the horizontal direction, confusion ensues...
Dennis
On Wed, Nov 16, 2011 at 11:16 AM, Giovanni Azua
<azuag...@student.ethz.ch> wrote:
> Hello,
>
> I generate box plots from my data like this:
>
> qplot(x=xxx,y=column,data=data,geom="boxplot") + xlab("xxx") + ylab(ylabel) +
> theme_bw() + scale_y_log10() + geom_jitter(alpha=I(1/10))
>
> The problem is that I see lot of points above the maximum at the same level
> as some outliers. It looks very weird as I expected the outliers to be "few"
> and specially not see any points other than the outliers below the minimum or
> above the maximum indicator. Can anyone explain what's going on?
>
> Attached I send a snapshot, see the second level having some outliers,
> separate from the outliers there are also some points which seem not to be
> outliers and that are above the maximum indicator? is this a bug or am I
> missing anything?
>
> TIA,
> Best regards,
> Giovanni
>
> PS: I sent this to the ggplot2 list too (sorry for the double post but I am
> kind of under pressure with this)
>
> ______________________________________________
> R-help@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.
>
______________________________________________
R-help@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.
