[R-sig-eco] scatter plot of coordinates

[Gavin Simpson]

On Wed, 2010-01-27 at 10:28 +0100, Julia Tchernova wrote:
> Hello!
> I have a dataset with the date and positions -  Lat and Long columns
> How do I make a scatter  plot?
> Do I have to cbind the Lat and Long columns?
> Any suggestions will be much appreciated!
> Thank you
> Julia

The spatial stack of software will probably be useful here if you need
to think about projections etc. Others have suggested something suitable
for simple graphs but for anything even a bit more advanced, the spatial
software will be helpful.

For example:

require(sp)
dat <- data.frame(X = rnorm(3), lat = c(20,30,40), lon = c(10,20,30))
coordinates(dat) <- c("lon","lat")
plot(dat)
box()
axis(1)
axis(2)
## or
##spplot(dat)

HTH

G

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