4

Try the GDAL "Fill nodata" utility under Raster --> Analysis. Documentation on the tool can be read here.


3

A bit of theory The NTv2 (National Transformation version 2) shift intended to facilitate the transformation between datums. It can be achieved by means of a grid file (encapsulates the shift values that are stored in a regular arrangement of geographic coordinates) which comes in two formats: .gsa : a readable (ASCII) format (GSA) .gsb : a binary format (...


3

GIMP supports GeoTIFF tags since version 2.10.24 https://www.gimp.org/news/2021/03/29/gimp-2-10-24-released/ GeoTIFF metadata support (georeferencing information embedded within a TIFF file used by map makers)


2

Assuming you want the output data as a TIFF and not the "plot" with all its axes and lines etc... You can get the Viridis colour palette in QGIS if you want to style it that way. Use the rasterFromXYZ function from the raster package to create a raster from your XYZ matrix. The return from the idw function seems to be ZXY order so the columns are ...


1

I do not know "program A" but certainly you can create more bands with VRT. File "test.tif" is a 3-band image. gdal_translate -of VRT -b 1 -b 1 -b 1 -b 1 -b 1 test.tif 5band.vrt gdalinfo 5band.vrt Driver: VRT/Virtual Raster Files: 5band.vrt test.tif Size is 12000, 12000 Coordinate System is: ... Band 1 Block=256x256 Type=Byte, ...


1

You cannot change the raster size (pixel width / height) of an existing GeoTIFF file. You must write a new file.


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