Fixes scale/offset error. (#206)

* Fixes scale/offset error.

* Adds ISIS CSM support

* Reverts millisecond formatting

* Adds missing CHANGELOG.

* Adds exception handling

CHANGELOG.md

@@ -34,8 +34,12 @@ release.
 -->
 
 ## [Unreleased]
+### Added
+- Hard coded support for `csminit`ed cubes that have serial numbers that differ from `spiceinit`ed cubes.
+- Added support for scale and offset for GeoDataset objects.
+
 ### Fixed
-- Fixed a bug where scale and offset were not being read or applied to GeoDataset objects.
+- Fixed a bug where scale and offset were being applied backwards to GeoDataset objects.
 
 ## [1.5.5]()
 ### Fixed

plio/io/__init__.py

@@ -6,6 +6,7 @@ try:
     gdal = importlib.import_module('osgeo.gdal')
     osr = importlib.import_module('osgeo.osr')
     ogr = importlib.import_module('osgeo.ogr')
+    gdal.UseExceptions()
 except:
     gdal = osr = ogr = None
 

plio/io/io_gdal.py

@@ -517,7 +517,7 @@ class GeoDataset(object):
         dtype = getattr(np, dtype)
 
         if not pixels:
-            array = (band.ReadAsArray().astype(dtype) + offset) * scale
+            array = band.ReadAsArray().astype(dtype) * scale + offset
             #if self.north_up == False:
             #    array = np.flipud(array)
         else:
@@ -538,7 +538,7 @@ class GeoDataset(object):
 
             if ystart + ycount > ymax:
                 ycount = ymax - ystart
-            array = (band.ReadAsArray(xstart, ystart, xcount, ycount).astype(dtype) + offset) * scale
+            array = band.ReadAsArray(xstart, ystart, xcount, ycount).astype(dtype) * scale + offset
 
         return array
 

plio/io/isis_serial_number.py

@@ -36,10 +36,15 @@ def get_isis_translation(label):
     if not isinstance(label, PVLModule):
         label = pvl.load(label)
 
+    if find_in_dict(label, 'CsmInfo'):
+        # This cube has been CSM inited, have to load the CSM translation table
+        translation = {"Keyword1": {"InputKey": "CSMPlatformID", "InputGroup": "IsisCube,CsmInfo", "InputPosition": ["IsisCube", "CsmInfo"], "OutputName": "Keyword1", "OutputPosition": ["Group", "SerialNumberKeywords"], "Translation": ["*", "*"]}, "Keyword2": {"InputKey": "CSMInstrumentId", "InputGroup": "IsisCube,CsmInfo", "InputPosition": ["IsisCube", "CsmInfo"], "OutputName": "Keyword2", "OutputPosition": ["Group", "SerialNumberKeywords"], "Translation": ["*", "*"]}, "Keyword3": {"InputKey": "ReferenceTime", "InputGroup": "IsisCube,CsmInfo", "InputPosition": ["IsisCube", "CsmInfo"], "OutputName": "Keyword3", "OutputPosition": ["Group", "SerialNumberKeywords"], "Translation": ["*", "*"]}}
+    else:
         # Grab the spacecraft name and run it through the ISIS lookup
         spacecraft_name = find_in_dict(label, 'SpacecraftName')
         for row in plio.data_session.query(StringToMission).filter(StringToMission.key==spacecraft_name):
             spacecraft_name = row.value.lower()
+        
         # Try and pull an instrument identifier
         try:
             instrumentid = find_in_dict(label, 'InstrumentId').capitalize()
@@ -52,6 +57,7 @@ def get_isis_translation(label):
                                                                 Translations.instrument==instrumentid):
             # Convert the JSON back to a PVL object
             translation = PVLModule(row.translation)
+
     return translation