> If your data is really a bunch of points, not on a grid, then you need > to use plot3d() to plot it as points, or convert it to a surface. The > interp() function in the akima package can do that. (There are lots of > other possibilities too.)
Actually, my data is on a grid. The values are something like 0 < x < y < 0.05, with a 0.00005 step for both x and y. I tried using interp() as follows: data <- .. x <- data$X y <- data$Y z <- data$Z temp <- interp(x, y, z) plot.new() image(temp, add=TRUE) I figured showing an image would just verify that the grid was formed correctly, but that didn't seem to work. Wesley ______________________________________________ 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.