I wish to have inward-pointing ticks on my contourplot graph, but the colored background produced by the "region=TRUE" statement covers the ticks up, is there any way around this? Sample code below. --Seth
library(lattice) model <- function(a,b,c,d,e, f, X1,X2) # provide model function for contour plot {J <- a + (b*X1) + (c*X2) + (d*X1*X2) + e*(X1^2) + f*(X2^2) pp <- exp(J)/(1+exp(J)) return(pp)} g <- expand.grid(X1= seq(0.3,0.9,0.001), X2 = seq(0.3,1, 0.001)) g$z <- model(-29, -14, 52, 80, -3, -56, g$X1, g$X2) # Create variable z using gridded data, model, and variables contourplot(z ~ X1 * X2, data = g, region = TRUE, # Adds color to background cuts = 10, # Number of contour intervals...(and color intervals!) scales = list(tck = c(-1,-1)) # ticks go inward ) ### END [[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.