Just to clarify functionality for some of the modules. On Wed, Oct 10, 2018 at 7:09 AM Mehrdad Varedi <[email protected]> wrote:
> > *r.buildvrt *in version (7.4.0 and 7.4.1)generated the following error: > 'r.buildvrt' is not recognized as an internal or external > command, operable program or batch file. > Available only in 7.6 (future release) and above. > I have tried *r.patch *which doesn't generate any error, although the > created result is empty with no errors. > Likely the computation region as Vero says. > *r.out.gdal* and using the grouping option to group the layers and export > them to a new Tiff, although that had a similar output as r.patch. > The group r.out.gdal support is GRASS GIS imagery group created by i.group. That's a GRASS GIS way of handling multiband images, or more precisely, a way to organize fully overlapping rasters together as a collection of spectral bands or related image processing outputs. > > A virtual raster file in QGIS was created using the 4 Tiff files and > importing to grass using r.import, didn't work and I got errors. > This should work. (Files and error messages would be needed to understand what's wrong, but if r.patch works for you that's good).
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