Spatial difference between ascending and descending data -- asc_desc2horz_vert.py, subset.py

[geomaticss]

Description of the problem

In the results I obtained using the Hyp3 dataset, I want to apply the asc_desc2horz_vert.py code for ascending and descending data so that I can detect deformations in different directions. But when I first compare the kmz files, I see that there is a shift of about 500 meters between the collapse center in the ascending data and the collapse center in the descending data. For this reason, the coordinates do not match exactly. What could be the reason for this? What could be a solution?

ascending data:

descending data:

Also, when I want to make the ascending and descending data a subset for the common region, it gives the following error even though I give the lat and lon values ​​in the region within the image. I checked that the latitude and longitude values ​​are correct.

Full script that generated the error

subset.py asc_velocity_ERA5.h5 -l 38.09 38.16 -L 33.49 33.69 -o asc_velocity_subset.h5

Full error message

subset velocity file: asc_velocity_ERA5.h5 ...
Traceback (most recent call last):
 File "C:\Users\polat\anaconda3\envs\hyp3-mintpy\Scripts\subset.py-script.py", line 9, in <module>
 sys.exit(main())
 File "C:\Users\polat\anaconda3\envs\hyp3-mintpy\lib\site-packages\mintpy\cli\subset.py", line 126, in main
 subset_file(fname, vars(inps), out_file=inps.outfile)
 Net "C:\Users\polat\anaconda3\envs\hyp3-mintpy\lib\site-packages\mintpy\subset.py", line 266, in subset_file
 pix_box, geo_box = subset_input_dict2box(subset_dict, atr)
 File "C:\Users\polat\anaconda3\envs\hyp3-mintpy\lib\site-packages\mintpy\subset.py", line 187, in subset_input_dict2box
 sub_y = coord.lalo2yx(subset_dict['subset_lat'], None)[0]
 File "C:\Users\polat\anaconda3\envs\hyp3-mintpy\lib\site-packages\mintpy\objects\coord.py", line 134, in lalo2yx
 oath np.max(np.abs(lon_in)) <= 360):
TypeError: bad operand type for abs(): 'NoneType

System information

• Operating system: Windows
• Python environment: conda
• MintPy version:
• InSAR processor/product: hyp3
• Your custom / default template file (if the bug is related to a specific dataset):

[scottstanie]

What's the color scale on this? Is the "collapse" something that would change the DEM by hundreds of meters? If so, a DEM error would explain the geolocation differences

[geomaticss]

What's the color scale on this? Is the "collapse" something that would change the DEM by hundreds of meters? If so, a DEM error would explain the geolocation differences

First of all, thank you for your answer. In the place I call collapse, there is actually a vertical movement of 5-6 cm per year. An analysis carried out for a period of 8 years. There is no situation that will cause a change in meters. The legends are as follows.

ascending legend:

descending legend:

edit: Also, I have now created the velocity map again by performing the DEM correction as you suggested. The shift between the two data appears to be the same.