[GRASS-user] WCS import into GRASS GIS - select region extent only
Hi, For my Bachelor-Thesis I want to optimize the erosion risk map of Switzerland for use in agricultural extension. Although I concentrate on 3 cantons only (BE, FR, SO), I have to manage huge amounts of data. The fact that the raster data I got from the federal office are overlapping each other (following the defined fieldblocks) doesn't make things easier, but I've at least found r.patch which can combine them one by one. I thought, with Mapserver (V 6.4.0) I'd found the perfect solution to all my problems. Now I'm stuck after 5+ hours of trying to import the data from my local WCS-Service. I have seen the hints on GRASS Wiki [1] and r.in.gdal starts to download geotiff-tiles from Mapserver. The problem is, that I don't want all the 12 GB of data, but only the grass region extent. The following http-query does what I expect, it makes me a GeoTIFF-File from my region defined by BBOX=... . http://localhost/mywcs?SERVICE=WCSVERSION=1.0.0REQUEST=GetCoveragecoverage=blw.eros_zFORMAT=image/tiffCRS=EPSG:2056BBOX=2596000,1181000,2597500,1182500RESX=2RESY=2 I tried to restrict the download to the region by defining a BBOX in this WCS_GDAL xml file. However, this didn't work and isn't supposed to work [2]. Is there a way to say r.in.gdal to only get the data from the region extent? I know there is this new, very clever r.in.wms2 script, which does exactly what I want -- for WMS. Is there a way to get WMS-Mapserver to serve RAW-data (erosion in t per annum, elevation data)? Or maybe better create a python script to download map by a custom http-request? Thanks in advance for any advice! I hope I can get it to work somehow. Liebe Grüsse Martin Zbinden PS: the WCS server given in GRASS wiki seems to be down this time. [1] http://grasswiki.osgeo.org/wiki/Global_datasets#OGC_WCS_-_Albedo_example [2] http://lists.osgeo.org/pipermail/gdal-dev/2008-March/016552.html -- Martin Zbinden Riedacker 523 3154 Rüschegg Heubach +41 78 628 28 82 ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Fwd: WCS import into GRASS GIS - select region extent only
Hi, I'm all new to this list, but I tried GRASS GIS already for a few weeks. For my Bachelor-Thesis I want to optimize the erosion risk map of Switzerland for use in agricultural extension. Although I concentrate on 3 cantons only (BE, FR, SO), I have to manage huge amounts of data. The fact that the raster data I got from the federal office are overlapping each other (following the defined fieldblocks) doesn't make things easier, but I've at least found r.patch which can combine them one by one. I thought, with Mapserver (V 6.4.0) I'd found the perfect solution to all my problems. Now I'm stuck after 5+ hours of trying to import the data from my local WCS-Service. I have seen the hints on GRASS Wiki [1] and r.in.gdal starts to download geotiff-tiles from Mapserver. The problem is, that I don't want all the 12 GB of data, but only the grass region extent. The following http-query does what I expect, it makes me a GeoTIFF-File from my region defined by BBOX=... . http://localhost/mywcs?SERVICE=WCSVERSION=1.0.0REQUEST=GetCoveragecoverage=blw.eros_zFORMAT=image/tiffCRS=EPSG:2056BBOX=2596000,1181000,2597500,1182500RESX=2RESY=2 I tried to restrict the download to the region by defining a BBOX in this WCS_GDAL xml file. However, this didn't work and isn't supposed to work [2]. Is there a way to say r.in.gdal to only get the data from the region extent? I know there is this new, very clever r.in.wms2 script, which does exactly what I want -- for WMS. Is there a way to get WMS-Mapserver to serve RAW-data (erosion in t per annum, elevation data)? Or maybe better create a python script to download map by a custom http-request? Thanks in advance for any advice! I hope I can get it to work somehow. Liebe Grüsse Martin Zbinden PS: the WCS server given in GRASS wiki seems to be down this time. [1] http://grasswiki.osgeo.org/wiki/Global_datasets#OGC_WCS_-_Albedo_example [2] http://lists.osgeo.org/pipermail/gdal-dev/2008-March/016552.html -- Martin Zbinden Riedacker 523 3154 Rüschegg Heubach +41 78 628 28 82 ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] WCS import into GRASS GIS - select region extent only
Hei Martin, You could try making a (temporary) virtual GDAL-VRT dataset (it’s a simple textfile (XML) containing information like this, in the example below named dem_wcs.vrt): WCS_GDAL ServiceURLhttp://your_wcs_server/wcs.dtm?/ServiceURL CoverageNamelayername/CoverageName /WCS_GDAL For more info on vrt-format see: http://www.gdal.org/gdal_vrttut.html After that you could use gdal_translate (http://www.gdal.org/gdal_translate.html), which has a projwin parameter where you can feed you GRASS region boundaries from g.region -up: gdal_translate -co COMPRESS=LZW -projwin ulx uly lrx lry dem_wcs.vrt dem_wcs.tif Hope that helps, Cheers Stefan -Original Message- From: grass-user-boun...@lists.osgeo.org [mailto:grass-user-boun...@lists.osgeo.org] On Behalf Of Martin Zbinden Sent: 3. januar 2014 21:46 To: grass-user@lists.osgeo.org Subject: [GRASS-user] WCS import into GRASS GIS - select region extent only Hi, For my Bachelor-Thesis I want to optimize the erosion risk map of Switzerland for use in agricultural extension. Although I concentrate on 3 cantons only (BE, FR, SO), I have to manage huge amounts of data. The fact that the raster data I got from the federal office are overlapping each other (following the defined fieldblocks) doesn't make things easier, but I've at least found r.patch which can combine them one by one. I thought, with Mapserver (V 6.4.0) I'd found the perfect solution to all my problems. Now I'm stuck after 5+ hours of trying to import the data from my local WCS-Service. I have seen the hints on GRASS Wiki [1] and r.in.gdal starts to download geotiff-tiles from Mapserver. The problem is, that I don't want all the 12 GB of data, but only the grass region extent. The following http-query does what I expect, it makes me a GeoTIFF-File from my region defined by BBOX=... . http://localhost/mywcs?SERVICE=WCSVERSION=1.0.0REQUEST=GetCoveragecoverage=blw.eros_zFORMAT=image/tiffCRS=EPSG:2056BBOX=2596000,1181000,2597500,1182500RESX=2RESY=2 I tried to restrict the download to the region by defining a BBOX in this WCS_GDAL xml file. However, this didn't work and isn't supposed to work [2]. Is there a way to say r.in.gdal to only get the data from the region extent? I know there is this new, very clever r.in.wms2 script, which does exactly what I want -- for WMS. Is there a way to get WMS-Mapserver to serve RAW-data (erosion in t per annum, elevation data)? Or maybe better create a python script to download map by a custom http-request? Thanks in advance for any advice! I hope I can get it to work somehow. Liebe Grüsse Martin Zbinden PS: the WCS server given in GRASS wiki seems to be down this time. [1] http://grasswiki.osgeo.org/wiki/Global_datasets#OGC_WCS_-_Albedo_example [2] http://lists.osgeo.org/pipermail/gdal-dev/2008-March/016552.html -- Martin Zbinden Riedacker 523 3154 Rüschegg Heubach +41 78 628 28 82 ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
