On Thursday 03 January 2008, Moritz Lennert wrote: > On 03/01/08 14:06, Rainer M Krug wrote: > > Moritz Lennert wrote: > >> On 02/01/08 21:37, sebastian sauer wrote: > >>> Wed 02 Jan 2008 18:27, Rainer M Krug wrote: > >>>> you wrote in the a previous thread that one can use gdal 1.5 > >>>> directly to access a WMS ressource which is defined in an xml file > >>>> (see snippet below). > >>>> As 1.5 is out (and I compiled with MrSid support - works nicely by > >>>> the way), I looked but could find no information on that feature. > >>>> Could you please elaborate how I can use this instead of setting up > >>>> a mapserver on localhost? > >>> > >>> my understanding was - feel free to correct me - dylan was refering to > >>> the OGR/GDAL vrt driver. > >>> > >>> http://www.gdal.org/gdal_vrttut.html > >>> http://www.gdal.org/ogr/drv_vrt.html > >> > >> I would rather guess it was the "WMS -- Web Map Services" driver: > > > > Ah - now I understand. I still have to set up a WMS server, but I can > > access it through gdal instead of using r.in.wms. > > Well, if you have the data directly accessible, I don't know if it is > the most efficient way to access it via a webserver and wms. The main > insterest of this is obviously to get data from a distant wms server... > > Moritz
Right. I think that within the context of the original discussion (?) the point was access to a tiled, indexed image catalog of sorts. I had suggested adding internal overviews to the pile of images (gdaladdo), creating a tile index (gdaltindex), and then making the pile of images accessible via WMS (mapserver) so that chunks of the entire virtual mosaic could be imported into a GRASS region- either by r.in.wms (or r.in.gdal with some help). If I get a chance to mess around with this, I will post back a worked out example. Cheers, Dylan -- Dylan Beaudette Soil Resource Laboratory http://casoilresource.lawr.ucdavis.edu/ University of California at Davis 530.754.7341 _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
