Add option to run like VIIRS with only AVHRR channels

bin/vgac2pps.py

@@ -48,11 +48,13 @@
                         help="Save all 36 channels to level1c4pps file.")
     parser.add_argument('-pps_ch', '--pps_channels', action='store_true',
                         help="Save only the necessary (for PPS) channels to level1c4pps file.")
+    parser.add_argument('-avhrr_ch', '--avhrr_channels', action='store_true',
+                        help="Save only the AVHRR (1,2, 3B, 4, 5) channels to level1c4pps file.")
     parser.add_argument('-on', '--orbit_number', type=int, nargs='?',
                         required=False, default=0,
                         help="Orbit number (default is 00000).")
 
     options = parser.parse_args()
     process_one_scene(options.files, options.out_dir, engine=options.nc_engine,
                       all_channels=options.all_channels, pps_channels=options.pps_channels,
-                      orbit_n=options.orbit_number, as_noaa19=options.as_noaa19)
+                      orbit_n=options.orbit_number, as_noaa19=options.as_noaa19, avhrr_channels=options.avhrr_channels)

level1c4pps/vgac2pps_lib.py

@@ -174,7 +174,7 @@ def set_header_and_band_attrs(scene, orbit_n=0):
 
 
 def process_one_scene(scene_files, out_path, engine='h5netcdf',
-                      all_channels=False, pps_channels=False, orbit_n=0, as_noaa19=False):
+                      all_channels=False, pps_channels=False, orbit_n=0, as_noaa19=False, avhrr_channels=False):
     """Make level 1c files in PPS-format."""
     tic = time.time()
     scn_ = Scene(
@@ -189,6 +189,8 @@ def process_one_scene(scene_files, out_path, engine='h5netcdf',
         MY_MBAND = MBAND_PPS
     if as_noaa19:
         MY_MBAND = MBAND_AVHRR
+    if avhrr_channels:
+        MY_MBAND = MBAND_AVHRR
 
     scn_.load(MY_MBAND
               + ANGLE_NAMES