Hi everyone I have a matrix (let's say that it contains the values of elevation) and want to plot its values on a map using a function such as image.plot or filled.contour. The problem is that my grid is not rectilinear, it is bended. Here is an example
lon<-matrix(0,20,25) lat<-matrix(0,20,25) elev<-matrix(0,20,25) for (i in 1:20) { for (j in 1:25) { lat[i,j]<-i+((j-12.5)^2)/100 lon[i,j]<-j+((i-10)^2)/100 elev[i,j]<-i+j } } All 3 matrices have dimensions 20x25. How can I plot elev values in the grid points defined by lat and lon? -- Kostas Douvis PhD Student University of Athens - Department of Geography and Climatology Academy of Athens - Research Centre for Atmospheric Physics and Climatology email: [EMAIL PROTECTED] tel: +30-210-8832048 ______________________________________________ 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.