z limits
On Sunday 08 May 2005 16:32, Jennifer Skene wrote:
Hello, I am using R to run a program called GRASP - Generalized Regression Analysis and Spatial Prediction. I am trying to draw a figure using GRASP, and I get the following error message in R: Error in image.default(map, col = heat.colors(12)) : invalid z limits What are z limits? Can I manually set them? Please let me know if you have any insight on this! Thanks, Jennifer Skene
I believe that the "z" limits in GRASP relate to the third dimensional variable. If you are using spatial data that uses either altitude or another variable that gives a pseudo-surface, you should probably check the variable's range. JWD