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.ad...@noaa.gov
VOICE: 937-383-0528
FAX: 937-383-0033
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