I would like to combine them. Because the specific areas sometime overlap between two Rasters calculations are difficult.
I have tried using the following tools :
- Raster-> Miscellaneous-> Merge tool
- Raster-> Miscellaneous-> Build Virtual Raster (Catalog)
- Raster-> Miscellaneous-> Build overviews (Pyramids).
However, they all inform me that I either do not have the permission/rights to use these tools or the tools are not installed or have disappeared. Does anyone know is these tools belong to some plugin? I have tried to look through the plugins but have not found them. However there are so many I could have missed it!
the top picture is the error message i get when i try to make a catalog of the Raster files.
I have tried to change the folder mentioned in the comments to the first answer but i get the message shown in the button picture.