[GRASSLIST:10671] Re: Area cartograms

[Matthew Perry]

Another limitation of that C algorithm for cartograms is it only
outputs .ps files.

Try the link to the Java version.
(http://people.cas.sc.edu/hardistf/cartograms/) It inputs/outputs
shapefiles and has a nice GUI that autmates alot of the tediousness of
the C version.

matt


There's also a link to the

On 3/1/06, Dylan Beaudette <dylan.beaudette at gmail.com> wrote:
> On Wednesday 01 March 2006 11:35 am, Laurent Courty wrote:
> > Miha Staut wrote:
> > > Dear list,
> > >
> > > Sorry for a GRASS non related question. Does anybody know a software in
> > > which one could make cartograms where the area of the polygon reflects
> > > the size of the variable in question. E.g. in a map of the countries of
> > > the world (projection should be equivalent of course), the area of the
> > > country shows the size of the population of the country, not the actual
> > > area. I would be happy with either contiguous polygons with distortion of
> > > the shape or non contiguous polygons without shape distortion.
> > >
> > > If you fell responding to the question would burden the listers with non
> > > related topics, please reply me off list.
> > >
> > > Thanks,
> > > Miha
> > >
> > >
> > >
> > > ___________________________________________________________
> > > Yahoo! Photos – NEW, now offering a quality print service from just 8p a
> > > photo http://uk.photos.yahoo.com
> >
> > Hello,
> >
> > You could take a look at this :
> > http://ccablog.blogspot.com/2006/02/cartograms-again.html
> >
> > Laurent
>
> Cool Link! It looks like the underlying algorithm is written in C, and open
> source. Compiles nicely on linux -- although it requires an ESRI ungenerate
> format file as input... and v.out.arc seems to be stranded in GRASS54.
>
> Dylan
>
> --
> Dylan Beaudette
> Soils and Biogeochemistry Graduate Group
> University of California at Davis
> 530.754.7341
>
>


--
Matt Perry
perrygeo at gmail.com
http://www.perrygeo.net