[R] example of geom_contour() with function argument

[Ulrik Stervbo]

Hi BFD,

?geom_contour() *does* have helpful examples. Your Google-foo is weak:
Searching for geom_contour brought me:
http://ggplot2.tidyverse.org/reference/geom_contour.html as the first
result.

HTH
Ulrik

On Mon, 9 Oct 2017 at 08:04 Big Floppy Dog <bigfloppydog at gmail.com> wrote:

> Can someone please point me to an example with geom_contour() that uses a
> function? The help does not have an example of a function, and also  I did
> not find anything from online searches.
>
> TIA,
> BFD
>
>
>
> -----------------------------------------------------------------------------------------------
>
> How about geom_contour()?
>
> Am So., 8. Okt. 2017, 20:52 schrieb Ranjan Maitra <maitra at email.com>:
>
> > Hi,
> >
> > I am no expert on ggplot2 and I do not know the answer to your question.
> I
> > looked around a bit but could not find an answer right away. But one
> > possibility could be, if a direct approach is not possible, to draw
> > ellipses corresponding to the confidence regions of the multivariate t
> > density and use geom_polygon to draw this successively?
> >
> > I will wait for a couple of days to see if there is a better answer
> posted
> > and then write some code, unless you get to it first.
> >
> > Thanks,
> > Ranjan
> >
> >
> > On Sun, 8 Oct 2017 09:30:30 -0500 Big Floppy Dog <bigfloppydog at gmail.com
> >
> > wrote:
> >
> > > Note: I have posted this on SO also but while the question has been
> > > upvoted, there has been no answer yet.
> > >
> > >
> >
>
> https://stackoverflow.com/questions/46622243/ggplot-plot-2d-probability-density-function-on-top-of-points-on-ggplot
> > >
> > > Apologies for those who have seen it there also but I thought that this
> > > list of experts may have someone who knows the answer.
> > >
> > > I have the following example code:
> > >
> > >
> > >
> > > require(mvtnorm)
> > > require(ggplot2)
> > > set.seed(1234)
> > > xx <- data.frame(rmvt(100, df = c(13, 13)))
> > > ggplot(data = xx,  aes(x = X1, y= X2)) + geom_point() +
> geom_density2d()
> > >
> > >
> > >
> > > It yields a scatterplot of X2 against X1 and a KDE contour plot of the
> > > density (as it should).
> > >
> > > My question is: is it possible to change the contour plot to display
> > > the contours
> > >
> > > of a two-dimensional density function (say dmvt), using ggplot2?
> > >
> > > The remaining figures in my document are in ggplot2 and therefore I
> > > am looking for a ggplot2 solution.
> > >
> > > Thanks in advance!
> > >
> > > BFD
> > >
> > >       [[alternative HTML version deleted]]
> > >
> > > ______________________________________________
> > > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> > > 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.
> > >
> >
> >
>
>         [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> 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.
>

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