Re: [R] example of geom_contour() with function argument

2017-10-10 Thread Ranjan Maitra
Here is an alternative using geom_polygon which captures the "spirit" of the fatter tails of the multivariate t (in my opinion, because the display is quantile-based). Note that I have modified the OP's question somewhat to use non-identity matrices. I do came up with a few questions while crea

Re: [R] example of geom_contour() with function argument

2017-10-09 Thread Big Floppy Dog
Thank you very much! So, it appears that a grid has to be created for the function to be used in stat_contour(). Thanks again for this example! It is very helpful (and could be a worthwhile addition to geom_contour's help example). Btw, I was also trying to make the contour plot have shaded region

Re: [R] example of geom_contour() with function argument

2017-10-09 Thread jdnewmil
library(mvtnorm) # you were misusing "require"... only use require if you plan to library(ggplot2) # test the return value and fail gracefully when the package is missing set.seed( 1234 ) xx <- data.frame( rmvt( 100, df = c( 13, 13 ) ) ) xx2 <- expand.grid( X1 = seq( -5, 5, 0.1 ) # all combinati

Re: [R] example of geom_contour() with function argument

2017-10-09 Thread Big Floppy Dog
Hi, This is not a HW problem, sadly: I was last in a classroom 30 years ago, and can no longer run off to the instructor :-( I apologize but I cut and paste the wrong snippet earlier and made a typo in doing so, but the result is the same with the more appropriate snippet. require(mvtnorm) requ

Re: [R] example of geom_contour() with function argument

2017-10-09 Thread David Winsemius
> On Oct 9, 2017, at 6:03 AM, Big Floppy Dog wrote: > > Hello Ulrik, > > I apologize, but I can not see how to provide a pdf in place of the density > function which calculates a KDE (that is, something from the dataset in the > example). Can you please point to the specific example that might

Re: [R] example of geom_contour() with function argument

2017-10-09 Thread Big Floppy Dog
Hello Ulrik, I apologize, but I can not see how to provide a pdf in place of the density function which calculates a KDE (that is, something from the dataset in the example). Can you please point to the specific example that might help? Here is what I get: require(mvtnorm) require(ggplot2) set.s

Re: [R] example of geom_contour() with function argument

2017-10-09 Thread 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 wrote: > Can someone please point me to an ex

[R] example of geom_contour() with function argument

2017-10-08 Thread Big Floppy Dog
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 --- H