On 12/2/05, Michelle DePrenger-Levin <[EMAIL PROTECTED]> wrote: > Hello, > > I am creating a 3D scatter plot with the cloud function. I ask it to > group my rows by a "Treatment" column (there are 4 different groups). I > need to know which points in the plot correspond to which rows (which > treatment). By default it assigns pchs and cols to each group. When I > try to define the colors or point shapes it seems to use the first color > and pch for both the first and last group. I've tried to add: > > col = c("blue","red","orange","green"), > pch = c(20,20,22,22), > > after the "cex" line.
It's difficult to say without a reproducible example. The following works as expected for me: g <- gl(4, 50) mu <- 2 * as.numeric(g) x <- rnorm(200, mean = mu) y <- rnorm(200, mean = mu) z <- rnorm(200, mean = mu) cloud(z ~ x * y, groups = g, col = c("blue", "red", "orange", "green"), pch = c(20, 20, 22, 22)) The only explanation I can think of is that your grouping variable has more than 4 levels. What does table(RMM$Treatment) give you? Although, that doesn't explain why cex would work. -Deepayan > The only think that seems to work and keep all four groups separate is > making > > cex = c(1,2,3,4), > > I cannot figure out what it combines the first and last of my groups > with the same point character and color. Any suggestions? > > (Part of my code) > .... > print(cloud(RMMdistMETAc3$points[,1] ~ RMMdistMETAc3$points[,2] * > RMMdistMETAc3$points[,3], > data = RMM, > cex = 0.8, > > groups = Treatment, > screen = list(z = 10, x = -40, y = 3), > ) ..... ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html