The graphic design elements in ggplot2 are so well done for color graphics. Thank you! For BW publication graphs, there are a few options I would like to be able to tweak, but can''t seem to find the grob handles necessary OR the right plotting strategy. Here''s one problem I''ve been puzzling over: Q> How do you plot points with a grey fill and a black outline around the edge? I haven''t been able to find the MatLab equivalent of "MarkerEdgeColor" so I''ve been working on trying to overlay two plots of the same points, one plotted with fills and the other plotted with edge outlines (here is my conceptual code): pfill <- ggplot(data=DF, aes(x=X, y=Y)) + geom_point(aes(colour=TRT),size=4) + scale_colour_grey(end=0.8) + theme_bw pedge <- ggplot(data=DF, aes(x=X, y=Y)) + geom_point(aes(colour=TRT),size=4) + scale_colour_grey(end=0.8) + scale_shape(solid=FALSE) + theme_bw However, I can''t figure out the correct syntax, if this is even the right way to go about it. Any suggestions as to the best approach to achieve filled points with an edge outline would be greatly appreciated. --------------------------------------------------- Adam G. Marsh, Ph.D. Associate Professor Marine Biological Sciences University of Delaware Lewes, DE 19958 302.645.4367 ------------------------------------------------ [[alternative HTML version deleted]] ______________________________________________ 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.

Hi Adam, The next version of ggplot2 supports the build-in R plotting symbols that have different fills and borders, so you can do something like: geom_point(aes(colour=TRT), fill="red", colour="black", shape=21) Otherwise in the current version you can do: ggplot(data.frame(x = runif(20), y = runif(20)), aes(x, y)) + geom_point(size = 3, colour = "black") + geom_point(size = 2, colour = "red") The key difference to your code is that it''s all on one plot, and I''m manually setting the colours, rather than to using scales. I also just used a smaller point rather than the matching hollow glyph, which makes things a little easier (and reverses the orders of the colours). Hadley On Wed, Sep 10, 2008 at 9:37 AM, Adam Marsh <amarsh at udel.edu> wrote:> The graphic design elements in ggplot2 are so well done for color > graphics. Thank you! For BW publication graphs, there are a few > options I would like to be able to tweak, but can''t seem to find the > grob handles necessary OR the right plotting strategy. Here''s one > problem I''ve been puzzling over: > > Q> How do you plot points with a grey fill and a black outline around > the edge? > > I haven''t been able to find the MatLab equivalent of > "MarkerEdgeColor" so > I''ve been working on trying to overlay two plots of the same points, > one plotted with fills and the other plotted with edge outlines (here > is my conceptual code): > > pfill <- ggplot(data=DF, aes(x=X, y=Y)) + > geom_point(aes(colour=TRT),size=4) + > scale_colour_grey(end=0.8) + > theme_bw > > pedge <- ggplot(data=DF, aes(x=X, y=Y)) + > geom_point(aes(colour=TRT),size=4) + > scale_colour_grey(end=0.8) + > scale_shape(solid=FALSE) + > theme_bw > > However, I can''t figure out the correct syntax, if this is even the > right way to go about it. Any suggestions as to the best approach to > achieve filled points with an edge outline would be greatly appreciated. > > > --------------------------------------------------- > Adam G. Marsh, Ph.D. > Associate Professor > Marine Biological Sciences > University of Delaware > Lewes, DE 19958 > 302.645.4367 > ------------------------------------------------ > > > > > > [[alternative HTML version deleted]] > > ______________________________________________ > 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/