[GRASSLIST:10673] Re: Area cartograms

[Dylan Beaudette]

On Wednesday 01 March 2006 03:05 pm, Matthew Perry wrote:
> On 3/1/06, Dylan Beaudette <dylan.beaudette at gmail.com> wrote:
> > Actually,
> >
> > It will output an UNGENERATE format vector file too.
> >
> > Dylan
>
> Ahh good to know. You mentioned old versions of GRASS could deal with
> this format...Are there any open source tools than work with the
> UNGENERATE format?
>
> matt

Looks like there is!

http://www.intevation.de/~jan/gen2shp

Perhaps someone would like to write-up how to tie all three things : 
GRASS-cartogram-gen2shp for the GRASS newsletter... ?

Cheers,

Dylan

>
> > On Wednesday 01 March 2006 02:40 pm, Matthew Perry wrote:
> > > 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
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> > > > >
> > > > > 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
> >
> > --
> > 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

-- 
Dylan Beaudette
Soils and Biogeochemistry Graduate Group
University of California at Davis
530.754.7341