3D map

From: Roger Bivand <Roger.Bivand at nhh.no>
Reply-To: Roger.Bivand at nhh.no
To: "Edzer J. Pebesma" <e.pebesma at geo.uu.nl>
CC: Mihai Nica <m_nica at hotmail.com>,  <r-sig-geo at stat.math.ethz.ch>
Subject: Re: [R-sig-Geo] 3D map
Date: Sat, 29 Oct 2005 09:45:29 +0200 (CEST)

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

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

--
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