I am working on Taiwan and the east part of my interferogram is covered with dense vegentation so the coherence is really low (see attached) and the data are disturbing my modelling. I would like to mask out the east side, I tried with a coherence mask but it is not enough and I don’t manage to create a polygon on the area to mask it. Is there a way to remove some part of the interferogram ?
Did you try to use band math? An expresion like
if coherence<0.5 then NaN else coherence should work
I obtained this interferogram thanks to the bandmaths: If coh < 0.2 then NaN else Unwrapped_phase.
the thing is that I only want to remove the small column on the east side that correspond to the vegetation
Although it is not an operational solution I would:
- export the interferogram to QGIS as GeoTIFF
- create a shp to delineate the area you want to delete
- clip the raster using that shapefile
You could also import the shp to SNAP and mask the area using the
Land/Sea mask operator but if you are already in QGIS I think it is easier.
Thank you I will try this.