[R] color by group in ggplot

[Ye Lin]

I want to plot the values of "Var1" and "Var2" on the same plot, with
x-axis labeling as the list of IDs. But I want to color the points by
 their category in "Group". Is it possible to do in ggplot, or do i have to
plot from scratch using basic plot?


On Fri, May 3, 2013 at 1:49 PM, David Winsemius <dwinsemius at comcast.net>wrote:

>
> On May 3, 2013, at 1:37 PM, Ye Lin wrote:
>
> > Hey,
> >
> > I have a dataset like this:
> >
> > ID     Var1       Var2     Group
> > A1         1            1            BB
> > A2         1           2            AA
> > B1          2          1             CC
> > B2         1            3            DD
> > C1          1            2            EE
> >
> > I would like to plot the points of Var1 and Var2, use "ID" as X-axis, but
> > color the points by "Group". I can only manage to color the points by
> "ID"
> > after transform the dataset to "tall" using "reshape" package.
>
> If I were given the task of designing a plotting system that would
> "decide" what to do with a categorical "x-axis" request, it would probably
> deliver a barplot. My guess is that you do not want that. But what do you
> mean by a "point" whose x-value is "A1"?
>
> --
>
> David Winsemius
> Alameda, CA, USA
>
>
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