[R] ggplot2 - facet_grid and facet_wrap

hadley wickham h.wickham at gmail.com
Mon Nov 24 15:00:19 CET 2008


Thanks - I'll add it to my to do list.
Hadley

On Mon, Nov 24, 2008 at 5:43 AM, David Hajage <dhajage.r at gmail.com> wrote:
> Thank you Hadley.
>
> I've just discovered an another bug (perhaps ?) :
>
> qplot(mpg, wt, data=mtcars)# works
>
> qplot(mpg, wt, data=mtcars, geom = "line") # works
>
> qplot(mpg, wt, data=mtcars) + facet_grid(cyl ~ vs) # works
>
> qplot(mpg, wt, data=mtcars, geom = "line") + facet_grid(cyl ~ vs)
> Erreur dans grobs[[i, j]] <- layer$make_grob(layerd[[i, j]], details, coord)
> :
>   types (de NULL a list) incompatibles dans l'affectation [[
>
> david
> 2008/11/23 hadley wickham <h.wickham at gmail.com>
>>
>> Hi David,
>>
>> That looks like a bug!  I'll look into it.
>>
>> Regards,
>>
>> Hadley
>>
>> On Sat, Nov 22, 2008 at 1:07 PM, David Hajage <dhajage.r at gmail.com> wrote:
>> > Hello R users (and Hadley)
>> >
>> > I have another question about ggplot2 :-)
>> >
>> > (version 0.8)
>> >
>> > `dat` <-
>> > structure(list(D = c("a", "b", "c", "d"), G = c(1.51520888871520,
>> > 1.88812208268440, -6.60521862, 0.55968739), E = c(1.38888592256404,
>> > 1.39366168665589, 1.22509259382058, 1.36617701059296), I =
>> > c(6.92634958902857,
>> > 6.94416045215158, 13.2179488828556, 10.1993799972675), B =
>> > c(7.04367258675502,
>> > 7.41361056949868, 16.3459547875, 12.968224445), F = c(1.52045742504008,
>> > 1.51361354379038, 1.77077549933584, 1.64580736760918), A =
>> > c(2.33837047498186,
>> > 2.33805720845022, 2.20591935275643, 2.26866576271907), J =
>> > c(4.33205802184905,
>> > 4.41713317075078, 11.091251405, 7.21690806), H = c(2.35434145263158,
>> > 2.35434145263158, 2.00170987368421, 2.26486776842105), C =
>> > c(6.9118223461127,
>> > 6.92991088926983, 16.1293054123787, 10.2251608535304)), .Names = c("D",
>> > "G", "E", "I", "B", "F", "A", "J", "H", "C"), row.names = c(NA,
>> > 4L), class = "data.frame")
>> >
>> > mdat <- melt(dat, id = "D")
>> >
>> > qplot(D, value, data = mdat, fill = D, geom = "bar") + facet_grid(~
>> > variable)
>> > qplot(D, value, data = mdat, fill = D, geom = "bar") + facet_wrap(~
>> > variable)
>> >
>> >
>> > The first plot is good, but I think there is a problem in the second
>> > plot :
>> > the barplots are not in the correct order (compare "G" in the first plot
>> > and
>> > in the second plot for example).
>> >
>> > I join a pdf file showing the two graphs.
>> >
>> > Something is wrong in my code ?
>> >
>> > Thank you very much.
>> >
>> > david
>> >
>> > ______________________________________________
>> > 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.
>> >
>> >
>>
>>
>>
>> --
>> http://had.co.nz/
>
>



-- 
http://had.co.nz/



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