Geogrid update for post-processing correction

[leiyangleon]

update Geogrid to support parsing the S1 SAFE zip file and getting the radar image and orbit metadata without the need to run ISCE thru the topo step

[jhkennedy]

Suggested change

	def loadParsedata(indir,buffer=0):
	def loadParsedata(indir, orbit_dir, aux_dir, buffer=0):

[jhkennedy]

Suggested change

	rdr.orbitDir='/Users/yanglei/orbit/S1A/precise'
	rdr.auxDir='/Users/yanglei/orbit/S1A/aux'
	rdr.orbitDir=orbit_dir
	rdr.auxDir='aux_dir

These are hard-coded to your system, so they'll need to be input parameters.

[jhkennedy]

Suggested change

	metadata_m = loadParsedata(inps.indir_m,inps.buffer)
	metadata_s = loadParsedata(inps.indir_s,inps.buffer)
	metadata_m = loadParsedata(inps.indir_m, inps.orbit_dir, inputs.aux_dir, inps.buffer)
	metadata_s = loadParsedata(inps.indir_s, inps.orbit_dir, inputs.aux_dir, inps.buffer)

[jhkennedy]

Suggested change

	parser.add_argument('-p', '--parse', dest='parse', action='store_true',
	default=False, help='Parse the SAFE zip file to get radar image and orbit metadata; no need to run ISCE')
	parser.add_argument('-p', '--parse', dest='parse', action='store_true',
	default=False, help='Parse the SAFE zip file to get radar image and orbit metadata; no need to run ISCE')
	parser.add_argument('--orbit-dir', hep='Directory of Sentinel-1 orbit files')
	parser.add_argument('--aux-dir', hep='Directory of Sentinel-1 aux files')

[jhkennedy]

This is also hard-coded and should be parsed from the SLC name. Can use a function like:

from typing import Tuple
from pathlib import Path


def get_polarizations(s1_safe: str) -> Tuple[str]:
    mapping = {
        'SH': ('hh',),
        'SV': ('vv',),
        'DH': ('hh', 'hv'),
        'DV': ('vv', 'vh'),
    }
    key = Path(s1_safe).name[14:16]
    return mapping[key]

and selected like:

Suggested change

	rdr.polarization='hh'
	rdr.polarization=get_polarizations(indir)[0]