[GRASS-user] Merging Raster Files in GRASS

[Vaclav Petras]

Just to clarify functionality for some of the modules.

On Wed, Oct 10, 2018 at 7:09 AM Mehrdad Varedi <varedi at gmail.com> 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).
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/grass-user/attachments/20181010/fb04724c/attachment.html>