[R-sig-Geo] 3D map

[Roger Bivand]

On Sat, 29 Oct 2005, Edzer J. Pebesma wrote:

> Mihai Nica wrote:
> 
> >Could someone advise about a way to draw a 3D map... say the map of US 
> >states having as elevation the number of people in each state. Am I missing 
> >something? A 3D map search revealed nothing helpful.
> >
> >Thanks,
> >
> >mihai
> >
> >Mihai Nica, ABD
> >Jackson State University
> >170 East Griffith Street G5
> >Jackson, MS 39201
> >601 914 0361
> >
> >_______________________________________________
> >R-sig-Geo mailing list
> >R-sig-Geo at stat.math.ethz.ch
> >https://stat.ethz.ch/mailman/listinfo/r-sig-geo
> >  
> >
> You may want to try persp, or wireframe in lattice.

That was what I thought first, but I think it actually is the 3D histogram 
or exploding pie chart question, how to make a 3D representation of 
columns of regular or irregular polygons scaled by some z variable in 
height. The reader will see different things depending on viewing point 
and height, I would not in general recommend it as either a presentation 
or analytic graphic.

Roger

> --
> Edzer
> 
> _______________________________________________
> R-sig-Geo mailing list
> R-sig-Geo at stat.math.ethz.ch
> https://stat.ethz.ch/mailman/listinfo/r-sig-geo
> 

-- 
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Helleveien 30, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
e-mail: Roger.Bivand at nhh.no