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fix: check if the GRACE/GRACE-FO files are gfc format for #152 #153

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Merged
tsutterley merged 1 commit into from
Nov 27, 2024
Merged

fix: check if the GRACE/GRACE-FO files are gfc format for #152 #153

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14 changes: 9 additions & 5 deletions gravity_toolkit/read_GRACE_harmonics.py
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
#!/usr/bin/env python
u"""
read_GRACE_harmonics.py
Written by Tyler Sutterley (05/2023)
Written by Tyler Sutterley (11/2024)
Contributions by Hugo Lecomte

Reads GRACE files and extracts spherical harmonic data and drift rates (RL04)
Expand Down Expand Up @@ -42,6 +42,7 @@
time.py: utilities for calculating time operations

UPDATE HISTORY:
Updated 11/2024: check if the GRACE/GRACE-FO files are gfc format
Updated 05/2023: use pathlib to define and operate on paths
Updated 03/2023: added regex formatting for CNES GRGS harmonics
improve typing for variables in docstrings
Expand Down Expand Up @@ -145,13 +146,15 @@ def read_GRACE_harmonics(input_file, LMAX, **kwargs):
FLAG = r'gfc'
# COST-G unfiltered combination solutions
# https://doi.org/10.5880/ICGEM.COST-G.001
elif PRC in ('COSTG',):
DSET, = re.findall(r'GSM|GAC',PFX)
# GFC solutions from the GFZ ICGEM
# https://icgem.gfz-potsdam.de/sl/temporal
elif PRC in ('COSTG',) or SFX in ('.gfc',):
DSET, = re.findall(r'(GSM|GAA|GAB|GAC|GAD)', PFX)
DREL = np.int64(DRL)
FLAG = r'gfc'
# Standard GRACE/GRACE-FO Level-2 solutions
else:
DSET = PFX
DSET, = re.findall(r'(GSM|GAA|GAB|GAC|GAD)', PFX)
DREL = np.int64(DRL)
FLAG = r'GRCOF2'

Expand Down Expand Up @@ -207,7 +210,8 @@ def read_GRACE_harmonics(input_file, LMAX, **kwargs):
header_parameters = ['modelname','earth_gravity_constant','radius',
'max_degree','errors','norm','tide_system']
header_regex = re.compile(r'(' + r'|'.join(header_parameters) + r')')
grace_L2_input['header'] = [l for l in head if header_regex.match(l)]
header = [l.split(maxsplit=1) for l in head if header_regex.match(l)]
grace_L2_input['header'] = {i[0]:i[1] for i in header}
elif ((N == 'GRAC') and (DREL >= 6)) or (N == 'GRFO'):
# parse the YAML header for RL06 or GRACE-FO (specifying yaml loader)
grace_L2_input.update(yaml.load('\n'.join(head),Loader=yaml.BaseLoader))
Expand Down