Hi Juliet, Can you please provide a reproducible example of the problem?
Thanks, Hadley On Wed, Dec 31, 2008 at 10:14 AM, Juliet Hannah <juliet.han...@gmail.com> wrote: > This example works now, but does the legend need to be updated > manually? After we specify the color change, it does not appear in the > legend. Thanks! > > On Wed, Sep 24, 2008 at 8:03 PM, hadley wickham <h.wick...@gmail.com> wrote: >> On Wed, Sep 24, 2008 at 7:57 PM, <rmail...@justemail.net> wrote: >>> >>> >>> I have a more complicated function I am trying to write, but I run in to a >>> problem when I want to >>> add something to the plot from more than one data set while simultaneously >>> controlling the >>> appearance of the additional layer. >>> >>> # Toy data: >>> >>> foo <- data.frame ( x = 1:4, y = 4:1 , membership = c( "A", "A", "B", "B" ) >>> ) >>> bar <- data.frame ( x = 1:4 + 1 , y = 4:1 + 1, membership = rep ( "C", 4 ) ) >>> >>> # This works, and produces a sensible (unified!) legend: >>> >>> foo.gg <- ggplot ( mapping = aes ( x = x, y = y , colour = membership ) ) >>> foo.gg <- foo.gg + geom_point(data = foo) >>> foobar.gg <- foo.gg + geom_point ( data = bar ) # works fine, creates a >>> unified scale showing "membership" >>> foobar.gg >>> >>> # This does not work: >>> booboo.gg <- foo.gg + geom_point ( data = bar, colour = "black" ) # so >>> far, so good, but... >>> booboo.gg # it will not let me over-ride the colour specifications when it >>> actually tries to construct the graph >>> >>> The error message is: >>> "Error in `[.data.frame`(df, , var) : undefined columns selected" >>> >>> System Information: >>> R version 2.7.2 (2008-08-25) >>> i386-pc-mingw32 >>> ggplot2_0.6 >>> >>> My goal is to be able to add the additional layer and control its >>> appearance separately from the appearance of >>> the first layer. Possible? >> >> This is a bug that caused by an interaction with a bug fix in R 2.7.2. >> Its fixed in the development version, and I'm working hard to get a >> new release out as soon as possible. >> >> Hadley >> >> -- >> http://had.co.nz/ >> >> ______________________________________________ >> 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. >> > -- http://had.co.nz/ ______________________________________________ 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.
