Subset before snaphu-export

Microwave Toolbox Interferometry
#1

Hi I am following the flow chart provided in this post Can't read the dim file processing from Snappy

I am able to generate files up to Goldstein filtering step. The problem is in exporting to snaphu and then unwrapping to produce the unwrap phase .img file.

I am unable to unwrap because the tile generation terminates in the middle.
image

I read this forum and found that it could be because of the image size and my compute resources. I am using 32 GB RAM and trying to to process SLC image downloaded from Copernicus browser. I tried to work on a subset of the Goldstein phase filtered image. I have two questions:

  1. When I tried to get a subset, it gave me no intersection, although I know for sure that the points I provided for subset is within the image boundary. Is this because some previous step is not implemented properly? This is the snapshot of Goldstein phase filtered image

    image
    image788×252 19.3 KB

  2. How to decide over the parameters to export to snaphu. I thought of subsetting because I thought it would help. Will it help to generate unwrapped .img?