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dem_create hangs when using gdal 3.4.1 and pyroSAR 0.16

See original GitHub issue

If using the latest version of pyroSAR (0.16), dem_create hangs when trying to mosaic a DEM from a VRT built with the latest version of gdal (3.4.1). No error message appears. Executing the same commands using gdal 3.3 and pyroSAR 15.1 works fine:

search = cat.search(
    collections = "COPERNICUS_DEM_1ARC_COG",
    bbox=[lon1, lat1, lon2, lat2]
)

items = search.get_all_items()
item_json = items.to_dict()

tiles_to_mosaic=[]

for i in range (len(items)):
   tile=item_json['features'][i]['assets']['data']['href']
   tiles_to_mosaic.append(tile)

vrt=gdal.BuildVRT(outdir + "/dem_tmp.vrt", tiles_to_mosaic)

dem_create(src=vrt, dst=outdir + "/dem.tif", geoid_convert=True, geoid="EGM2008")

Issue Analytics

State:
Created 2 years ago
Comments:7 (4 by maintainers)

Top GitHub Comments

1reaction

peterfriedlcommented, Mar 7, 2022

@johntruckenbrodt thanks a lot for fixing this! Using all available threads, with version 0.16.1 the execution time of dem_create has been reduced to just 2 seconds. 😃

0reactions

johntruckenbrodtcommented, Mar 7, 2022

Okay after the discussion in the GDAL issue above pyroSAR is now using different EGM lookup files, see https://github.com/johntruckenbrodt/pyroSAR/commit/598ac39af7ffc303777e6d10b931f8d7788afbae. @peterfriedl, I will publish pyroSAR version 0.16.1 later. Perhaps this already fixes this issue. Also interesting in this context: https://github.com/OSGeo/gdal/issues/3630.