spatial_filter.py: Fix the np.pad()pad_width integral type error while using the double_difference filter, as described in #1014.
writefile.write(): do not overwrite format for .hgt file, as it can be float64 in isce2. Plus, the two-band format in roipac is weird anyway and not used much anymore [in the last 3+ years if I remember correctly].
isce_utils.extract_alosStack_metadata(): make los_file optional, because 1) attribute CENTER_INCIDENCE_ANGLE is not essential, i.e. optional; and 2) los_file does not exist sometimes, as in the post-processing of alos2App
Description of proposed changes
spatial_filter.py: Fix thenp.pad()pad_widthintegral type error while using the double_difference filter, as described in #1014.writefile.write(): do not overwrite format for.hgtfile, as it can be float64 in isce2. Plus, the two-band format in roipac is weird anyway and not used much anymore [in the last 3+ years if I remember correctly].isce_utils.extract_alosStack_metadata(): make los_file optional, because 1) attribute CENTER_INCIDENCE_ANGLE is not essential, i.e. optional; and 2) los_file does not exist sometimes, as in the post-processing of alos2AppReminders