Marc R. Feldesman <feldesmanm <at> pdx.edu> writes: > Is there any effective way to get distinct geometric plotting symbols and > colors for plots involving more than 25 groups?
Not sure if geometric shapes is essential but if not you could plot them with different letters (or LETTERS). The following plots one point for each state of 26 states using a, b, ...,z : data(state) df <- data.frame(state.x77)[1:26,] plot(Life.Exp ~ Income, data=df, pch=letters) # Alternately you could plot them all with points but label each point # with a different letter: plot(Life.Exp ~ Income, data=df, pch=20) text( df$Income, df$Life.Exp, LETTERS, pos=3) # or even use the state abbreviations in this case: plot(Life.Exp ~ Income, data=df, pch=20) text(df$Income,df$Life.Exp,state.abb[1:26],pos=3) ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
