<div dir="ltr">Hi Markus,<div><br></div><div>Thanks for confirming the VRT option should work.</div><div>I've started a new thread for this issue.</div><div><br></div><div>I'm currently running GRASS 7 for Windows on Win10-64Bit.</div><div>The 'real' process will run on an Ubuntu server.</div><div><br></div><div>g.version -bge returns</div><div><font face="monospace, monospace"><br></font></div><div><div><font face="monospace, monospace">version=7.0.4</font></div><div><font face="monospace, monospace">date=2016</font></div><div><font face="monospace, monospace">revision=68343</font></div><div><font face="monospace, monospace">build_date=2016-05-01</font></div><div><font face="monospace, monospace">build_platform=x86_64-w64-mingw32</font></div><div><font face="monospace, monospace"><br></font></div><div><font face="monospace, monospace"> ./configure --host=x86_64-w64-mingw32 '--with-libs=/c/msys64/usr/src/grass704/mswindows/osgeo4w/lib ' --with-includes=/c/OSGeo4W64/include --libexecdir=/c/OSGeo4W64/bin --prefix=/c/OSGeo4W64/apps/grass --bindir=/c/OSGeo4W64/bin --includedir=/c/OSGeo4W64/include --without-x --with-cxx --enable-shared --enable-largefile --with-fftw --with-freetype --with-proj-share=/c/OSGeo4W64/share/proj --with-gdal=/c/msys64/usr/src/grass704/mswindows/osgeo4w/gdal-config --with-geos=/c/msys64/usr/src/grass704/mswindows/osgeo4w/geos-config --with-liblas=/c/msys64/usr/src/grass704/mswindows/osgeo4w/liblas-config --with-sqlite --with-regex --with-nls --with-freetype-includes=/c/OSGeo4W64/include/freetype2 --with-odbc --with-cairo --with-postgres --with-opengl=windows</font></div><div><font face="monospace, monospace">proj4=4.9.2</font></div><div><font face="monospace, monospace">gdal=2.0.2</font></div><div><font face="monospace, monospace">geos=3.5.0</font></div><div><font face="monospace, monospace">sqlite=3.7.17</font></div></div><div><br></div><div>I also have QGis and MapWindow5 GIS on my machine. Both also use the proj4, gdal, geos and sqlite libraries. And I run PostgreSQL with PostGIS which is using GDAL as well.</div><div><br></div><div>My tiff-files and my VRT file are on an external USB harddrive.</div><div>I created the VRT file using <font face="monospace, monospace">GDAL 1.11.3, released 2015/09/16</font> because that version is in my path.</div><div>gdalinfo of my VRT is:</div><div><div><font face="monospace, monospace">Driver: VRT/Virtual Raster</font></div><div><font face="monospace, monospace">Files: ahn2.vrt</font></div><div><font face="monospace, monospace"> F:\AHN2\r01cz1.tif</font></div></div><div><font face="monospace, monospace"> [...]</font></div><div><div><font face="monospace, monospace"> F:\AHN2\r72hz2.tif</font></div><div><font face="monospace, monospace">Size is 532000, 600000</font></div><div><font face="monospace, monospace">Coordinate System is:</font></div><div><font face="monospace, monospace">PROJCS["Amersfoort / RD New",</font></div><div><font face="monospace, monospace"> GEOGCS["Amersfoort",</font></div><div><font face="monospace, monospace"> DATUM["Amersfoort",</font></div><div><font face="monospace, monospace"> SPHEROID["Bessel 1841",6377397.155,299.1528128000009,</font></div><div><font face="monospace, monospace"> AUTHORITY["EPSG","7004"]],</font></div><div><font face="monospace, monospace"> TOWGS84[565.417,50.3319,465.552,-0.398957,0.343988,-1.8774,4.0725],</font></div><div><font face="monospace, monospace"> AUTHORITY["EPSG","6289"]],</font></div><div><font face="monospace, monospace"> PRIMEM["Greenwich",0],</font></div><div><font face="monospace, monospace"> UNIT["degree",0.0174532925199433],</font></div><div><font face="monospace, monospace"> AUTHORITY["EPSG","4289"]],</font></div><div><font face="monospace, monospace"> PROJECTION["Oblique_Stereographic"],</font></div><div><font face="monospace, monospace"> PARAMETER["latitude_of_origin",52.15616055555555],</font></div><div><font face="monospace, monospace"> PARAMETER["central_meridian",5.38763888888889],</font></div><div><font face="monospace, monospace"> PARAMETER["scale_factor",0.9999079],</font></div><div><font face="monospace, monospace"> PARAMETER["false_easting",155000],</font></div><div><font face="monospace, monospace"> PARAMETER["false_northing",463000],</font></div><div><font face="monospace, monospace"> UNIT["metre",1,</font></div><div><font face="monospace, monospace"> AUTHORITY["EPSG","9001"]],</font></div><div><font face="monospace, monospace"> AUTHORITY["EPSG","28992"]]</font></div><div><font face="monospace, monospace">Origin = (13000.000000000000000,606250.000000000000000)</font></div><div><font face="monospace, monospace">Pixel Size = (0.500000000000000,-0.500000000000000)</font></div><div><font face="monospace, monospace">Corner Coordinates:</font></div><div><font face="monospace, monospace">Upper Left ( 13000.000, 606250.000) ( 3d15' 4.06"E, 53d25'28.87"N)</font></div><div><font face="monospace, monospace">Lower Left ( 13000.000, 306250.000) ( 3d22'34.17"E, 50d43'46.25"N)</font></div><div><font face="monospace, monospace">Upper Right ( 279000.000, 606250.000) ( 7d15'12.50"E, 53d25'45.07"N)</font></div><div><font face="monospace, monospace">Lower Right ( 279000.000, 306250.000) ( 7d 8'39.35"E, 50d44' 1.23"N)</font></div><div><font face="monospace, monospace">Center ( 146000.000, 456250.000) ( 5d15'22.63"E, 52d 5'43.48"N)</font></div><div><font face="monospace, monospace">Band 1 Block=128x128 Type=Float32, ColorInterp=Gray</font></div><div><font face="monospace, monospace"> NoData Value=-3.4028234663852901e+038</font></div></div><div><br></div><div>To be more precise. I have 1351 tiff-files with a total size of 579 GB.</div><div><br></div><div>If needed I could try on another pc with Win10, without QGIS, MW5 and PostGIS to test if I can open the VRT file using GRASS7.</div><div>But eventually I need to combine my PostGIS data because it holds my vector files.</div><div><br></div><div class="gmail_extra">Thanks,</div><div class="gmail_extra"><br></div><div class="gmail_extra">Paul</div><div class="gmail_extra"><br></div><div class="gmail_extra"><br><div class="gmail_quote">2016-06-28 23:04 GMT+02:00 Markus Neteler <span dir="ltr"><<a href="mailto:neteler@osgeo.org" target="_blank">neteler@osgeo.org</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Paul,<br>
<span><br>
On Tue, Jun 28, 2016 at 8:32 AM, Paul Meems <<a href="mailto:bontepaarden@gmail.com" target="_blank">bontepaarden@gmail.com</a>> wrote:<br>
><br>
> Thanks Markus for your suggestion.<br>
><br>
> I first tried Stefan's suggestion of using a VRT-file.<br>
> I have 1300 tiff-files with a combined file size of 400GB. Creating the VRT-file was no problem, but when I tried to import the VRT-file in GRASS7 using r.in.gdal GRASS crashes and dies.<br>
<br>
</span>Huh - should not happen .. But which operating system are you using,<br>
which GRASS version etc?<br>
You may post the result of<br>
<br>
g.version -bge<br>
<span><br>
> Loading the same VRT-file in QGis did take some time to load but it worked.<br>
<br>
</span>Please post also the output of<br>
<br>
gdalinfo yourfile.vrt<br>
<span><br>
> So I think I need to set-up a GeoServer after all, just to get a small portion of my height data to process in GRASS without worrying about polygons that are partially on multiple tiff-files.<br>
><br>
> Of course I'm open to any other suggestion. As said I'm new to GRASS.<br>
<br>
</span>Let's try harder, data in the your file size range should not be a problem.<br>
<span><font color="#888888"><br>
Markus<br>
</font></span></blockquote></div><br></div></div>