Re: Free high-quality country and administrative boundaries

--- Markus Neteler <[email protected]> wrote:

> On Sun, Jul 24, 2005 at 06:00:35PM -0700, Brent Wood wrote:
> > 
> > > What is the best *free* data in the following categories ?
> > > I'm listing the best thing I've found so far.
> ...
> > Some stuff which I'd rank as very interesting includes:
> > 
> > vmap0/igns world vector data ? (not sure if this is synonymous with CIA but
> > does include roads/rail to a reasonable global coverage)
> 
> Hi Brent,
> 
> what's the URL for vmap0/igns?

Hi Marcus,

I figured I'd reply to the list as well...

Sorry, igns was a typo, I meant GNS, as at 
http://earth-info.nga.mil/gns/html/geonames_dd_dms_date_20050701.zip
(a world placenames database updated monthly)

VMAP0 I got from 
http://www.mapability.com/index1.html?http&&&www.mapability.com/info/vmap0_index.html
(I have this also in a PostGIS database at work) 

> > SRTM based land elevation data
> > STRM/ETOPO based land/sea elevation/bathymetry 
> > 
> > This message from the GMT archives might help
> > http://wegener.mechanik.tu-darmstadt.de/GMT-Help/Archiv/12967.html
> > 
> > also see
> > ftp://topex.uscd.edu/pub/srtm30_plus
> 
> Interestingly, the topex.uscd.edu domain no longer exists (today).
> It did two days ago. A local problem?

It's gone here too, I know it was there coz I cut & pasted the URL above...
I have this entire dataset anyway (SRTM30+). Lots of files so I set a script
with lots of wgets to grab them all, then scribbled out another script to build
a GMT grdfile of each tile, then merge all the grids into one global grdfile.

There was a bit much data to do it all in one. I'd like to know how to do this
effectively in GRASS!!

Brent...