Absolutely No idea how to plot my Spatial Data

Hi,

I have a data set of points which are represented by 3 variables x,y,z where
x is the position of the point on the x-absciss and y on the y-absciss. Each
of my points has a value z, which I want to be displayed as follows: the
more z is high, the more the color on the map is dark.

How can I achieve this ?

Thanks for your help

View this message in context: http://n4.nabble.com/Absolutely-No-idea-how-to-plot-my-Spatial-Data-tp1691341p1691341.html
Sent from the R help mailing list archive at Nabble.com.