[GRASSLIST:5137] Re: [GRASS5] data set of world countries unique centroids

[Markus Neteler]

On Sun, Dec 12, 2004 at 03:29:17PM +0100, Markus Neteler wrote:
> (cc Silke) 
> 
> On Sat, Dec 11, 2004 at 05:53:29PM +0100, Moritz Lennert wrote:
> > Hello,
> > 
> > In order to map some of the results of the GRASS Users Survey, I am looking
> > for a worldwide set of unique centroids per country. In the current data sets
> > I have (all based on the ESRI world map) each country is represented by many
> > different polygons, each having its own centroid, but with the same country
> > name identifying it. Thus, when I try to use d.vect.chart I get as many
> > piecharts per country as there are polygons. I would obviously prefer to have
> > only one chart par country.
> > 
> > I know I can "clean" out the data sets I have, but if anyone has a ready-to-go
> > free data set of unique centroids per country (or can direct me to a possible
> > source), it would save me some work.
> 
> Please have a look at the worldmap based on VMAP0 data from
> Silke Reimer/Intevation:
> 
>  http://www.intevation.de/pipermail/freegis-list/2004-July/001784.html
> 
>  ftp://ftp.gwdg.de/pub/misc/freegis/intevation/freegis/worlddata/
>  
> Note that she used VMAP0 R3 (a bit old) for V0.1.
> 
> There is a newer V0.2 also available, maybe based on a higher version
> but the tarball seems to be damaged.

Correction: the tarball is not damaged.

The README of freegis_worlddata-0.2 states:
  "These sample geodata have been extracted from VMAP Level0 R3"

Markus