Hi Jannis,
You can have a look at image(), or alternatively look at spplot. The
latter assumes that you have your data structured according to the
spatial R classes that the sp-package provides:
library(sp)
data(meuse.grid)
head(meuse.grid)
summary(meuse.grid)
# transform to sp-object
gridded(meuse.grid) = ~x+y
summary(meuse.grid)
spplot(meuse.grid, "dist")
cheers,
Paul
On 05/19/2010 12:24 PM, Jannis wrote:
Dears,
before I start programming my own function I would like to ask you whether
there is any function already available that lets me plot a x/y plot with the
colors of the points determined by scaling a third variable z into a defined
colorramp?
Until now I am using a wild combination of functions to create a colorvector by
hand, then calling
plot(x,y,col=colors)
and then using color.legend() from plotrix to add a colorbar. Is there anything
where I can just call (for example)
plot(x,y,z)
and get a plot and a colorbar next to it?
If not I have to program that myself because my current way involves a lot of
steps and readjusting plotting regions.
Thanks for your help!
Jannis
______________________________________________
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.
--
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
http://nl.linkedin.com/pub/paul-hiemstra/20/30b/770
______________________________________________
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.
