[GRASS-user] Vectors in WMS

[Daniel Victoria]

I don't understand about WMS and WFS a lot. All I know is that there
is a server at the environmental ministry where I can see the
hydrography layers. The only thing is that the maps address changes
every day (it's a per request service I guess) I'll give r.in.wms a
try

If, by any chance, it's a WFS server, is there a download tool for it?

Cheers
Daniel

On Thu, Apr 24, 2008 at 12:08 PM, Maris Nartiss <maris.gis at gmail.com> wrote:
> I'm sorry to disappoint You, but WMS deals with raster and not with
>  vectors. Vectors You can get with WFS or similar service. If You by
>  word "vectors" mean roads, rivers etc. displayed as raster in WMS
>  service, then You should:
>  1) Download data as rasters (r.in.wms);
>  2) Extract objects of interest (r.mapcalc);
>  3) Run r.thin to get thin lines;
>  4) Convert result to vectors with r.to.vect.
>
>  Still You can create buffers and other analysis on raster data.
>
>  Maris.
>
>  2008/4/24, Daniel Victoria <daniel.victoria at gmail.com>:
>
>
> > Hi all,
>  >
>  > I've found some vectors of interest on a WMS server (Brazilian
>  > Environmental Ministry) and I'd like to save those vectors locally so
>  > I can do operations like buffers, distances, etc etc, I've seen the
>  > r.in.wms. Is there such a functionality for vectors?
>  >
>  > Thanks
>  > Daniel
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