r.out.xyz
Exports a raster map to a text file as x,y,z values based on cell centers
Raster (r.*)
QgsProcessingParameterMultipleLayers|input|Input raster(s)|3|None|False
QgsProcessingParameterString|separator|Field separator|pipe|False|True
*QgsProcessingParameterBoolean|-i|Include no data values|False|True
QgsProcessingParameterFileDestination|output|XYZ File|XYZ files (*.xyz *.txt)|None|False