[R-sig-Geo] 3D map

[White.Denis at epamail.epa.gov]

As with any graphic technique, the utility and appropriateness depend on
the objective of the presentation.  Showing polygons in persective
according to some attribute is certainly not inherently a bad idea.
Here are a couple of examples from experimental GIS software develped in
the 1970s.  ESRI's 3D Analyst has these capabilities and there are
examples of that software on the web.

Denis White
   US EPA, 200 SW 35th St, Corvallis, Oregon, 97333 USA
   voice: 541.754.4476, email: white.denis at epa.gov
   web: www.epa.gov/wed/pages/staff/white/

(See attached file: example1.prism.jpg)(See attached file:
example2.prism.jpg)

r-sig-geo-bounces at stat.math.ethz.ch wrote on 2005-10-29 11:55:47:

> Yes, I kind of thought about that myself... Thanks! I will just drop
it.
>
> Mihai Nica, ABD
> Jackson State University
> 170 East Griffith Street G5
> Jackson, MS 39201
> 601 914 0361
>
>
> >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
> > > >
> > > >_______________________________________________
> > > >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
> > >
> >
> >--
> >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
> >
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