问题
I'm running R version 3.0.1 and ggplot2 version 0.9.3.1 on a Windows machine and getting aberrant behavior from color bar legends -- the legend labels appear but the color bar mysteriously does not.
For example, if I run the following code:
d <- data.frame(x=rnorm(100), y=rnorm(100), z=rnorm(100))
ggplot(d, aes(x, y, color=z)) + geom_point()
I get this plot:
whereas on my other machine (a Mac running R version 2.15.2 and ggplot 0.9.3.1) the same code gives me this:
The behavior seems to apply only to color bars for continuous numerical variables -- legends for discrete factors appear as expected. I've tried reinstalling ggplot2. Anybody have thoughts on what's going on here? Thanks!
回答1:
I found the problem, and a working solution, here. It's an issue with color rendering when accessing a server via Remote Desktop, and can be fixed in host settings.
来源：https://stackoverflow.com/questions/19414579/color-bar-missing-in-ggplot-legend-windows-remote-desktop