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 <[email protected]> wrote: > On Wed, Sep 24, 2008 at 7:57 PM, <[email protected]> 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/ > > ______________________________________________ > [email protected] 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. > ______________________________________________ [email protected] 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.
