Help needed with spplot
All: I'm using GRASS 6.4 with R 2.9.2 and sp/spgrass6. When plotting a vector file, read in from GRASS, using spplot, the drawing takes many minutes to complete. Apart from the fact that the vector file is probably more detailed than I need, I know time is spent drawing off-screen. I tried specifying xlim & ylim, but, of course, this just zooms into the area I'm mapping, and does not solve my underlying problem. I also tried using pruneMap(), but this did not seem to make any difference in the length of time before my R prompt returned. By contrast, GRASS re-draws very fast, within a few seconds instead of ~5 minutes. I want to use spplot to draw an array of maps (21), so 1+ hours will not work for what I am doing. Any thoughts how I might speed-up the process? Regards, Tom
Thomas E Adams National Weather Service Ohio River Forecast Center 1901 South State Route 134 Wilmington, OH 45177 EMAIL: thomas.adams at noaa.gov VOICE: 937-383-0528 FAX: 937-383-0033