Paul Hiemstra wrote:
Tom Gottfried wrote:
Hi list,
the last plot in the following code ends up with error messages in
the plot:
data(meuse.grid)
data(meuse)
coordinates(meuse.grid) <- ~x+y
coordinates(meuse) <- ~x+y
meuse.grid <- as(as(meuse.grid, "SpatialPixelsDataFrame"),
"SpatialGridDataFrame")
spplot(meuse) # works
spplot(meuse, sp.layout=list(sp.points,
meuse, col="red")) # works
spplot(meuse.grid) # works
spplot(meuse.grid, sp.layout=list(sp.points, meuse)) # does not work
works: ___________
spplot(meuse.grid, sp.layout=list("sp.points", meuse))
use quotes around sp.points. Or else it will look for the R object
sp.points, which is not present.
cheers,
Paul
in addition:
look at:
http://wiki.r-project.org/rwiki/doku.php?id=tips:spatial-data:spatial_data_visualization
for some more info.
cheers,
Paul
What can I do to make the points being plotted on top of the grid?
Thanks in advance!!
Tom
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--
Drs. Paul Hiemstra
Department of Physical Geography
Faculty of Geosciences
University of Utrecht
Heidelberglaan 2
P.O. Box 80.115
3508 TC Utrecht
Phone: +3130 274 3113 Mon-Tue
Phone: +3130 253 5773 Wed-Fri
http://intamap.geo.uu.nl/~paul
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