bugfix in subset.subset_input_dict2box() (#1484)

+ subset: Fix a bug introduced in #1464, while subsetting a file in WGS84 coordinate using --lon option.

+ info: print out the SNWE info for geocoded files.

Author: yunjunz

src/mintpy/info.py

@@ -174,6 +174,11 @@ def print_aux_info(fname):
         print('file type: '+atr['FILE_TYPE'])
         if 'Y_FIRST' in atr.keys():
             print('coordinates : GEO')
+            n = float(atr['Y_FIRST'])
+            w = float(atr['X_FIRST'])
+            s = n + float(atr['Y_STEP']) * int(atr['LENGTH'])
+            e = w + float(atr['X_STEP']) * int(atr['WIDTH'])
+            print(f'SNWE: {s}, {n}, {w}, {e}.')
         else:
             print('coordinates : RADAR')
         if k in ['timeseries']:

src/mintpy/subset.py

@@ -208,7 +208,7 @@ def subset_input_dict2box(subset_dict, meta_dict):
                 raise TypeError('Both --lat/lon are required for WGS84-UTM coordinates conversion.')
         else:
             # lat/lon --> y/x conversion
-            sub_x = coord.lalo2yx(None, subset_dict['subset_lon'])[0]
+            sub_x = coord.lalo2yx(None, subset_dict['subset_lon'])[1]
     elif subset_dict['subset_x']:
         sub_x = subset_dict['subset_x']
     else: