The full details on the col= argument can be found in the section titled "Color Specification" on the help page for par - ?par.
Basically, col= accepts color names, hexadecimal RGB, or an integer designating a position on the current palette. You can get the current palette using > palette() [1] "black" "red" "green3" "blue" "cyan" "magenta" "yellow" [8] "gray" Any of these will give you red col="red" col="#FF0000" col=2 You can change the palette colors with the palette() function, but some graphics functions draw axes, text, etc assuming the first color in the palette is black so it may be better to create a vector of the colors you want, eg. mc <- colors()[c(552, 254, 26)] and then use col=mc[1] ------------------------------------- David L Carlson Department of Anthropology Texas A&M University College Station, TX 77840-4352 -----Original Message----- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Katharine Miller Sent: Monday, December 9, 2013 4:12 PM To: r-help@r-project.org Subject: [R] Problem with R colors Hello, I am having difficulty obtaining the correct colors in my R charts. > colors()[c(552, 254, 26)] [1] "red" "green" "blue" But, if I specify col=552 in my barplot, I get gray bars. Likewise, col=254 gives bright pink, and col=26 is a red-orange. I get accurate results when I spell out the names, but I am making a pallet with 20- 30 colors and it is a real pain to have to do that. Can anyone help me figure out what I am doing wrong? Thanks [[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. ______________________________________________ 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.
