Created the remaining 5 observable mixins classes

imagine/observers/hammurapy/observable_mixins/dm_mixin.py

+# -*- coding: utf-8 -*-
+
+import os
+
+from nifty import Field, HPSpace
+
+
+class DMMixin(object):
+    def _initialize_observable_dict(self, observable_dict, magnetic_field):
+        ensemble_space = magnetic_field.domain[0]
+        hpSpace = HPSpace(nside=self.nside)
+
+        observable_dict['dm'] = Field(domain=(ensemble_space, hpSpace),
+                                      distribution_strategy='equal')
+        super(DMMixin, self)._initialize_observable_dict(observable_dict,
+                                                         magnetic_field)
+
+    def _build_parameter_dict(self, parameter_dict, magnetic_field,
+                              working_directory, local_ensemble_index):
+        obs_DM_file_name = os.path.join(working_directory, 'dm.fits')
+        parameter_dict['do_dm'] = 'T'
+        parameter_dict['obs_DM_file_name'] = obs_DM_file_name
+        super(DMMixin, self)._build_parameter_dict(parameter_dict,
+                                                   magnetic_field,
+                                                   working_directory,
+                                                   local_ensemble_index)
+
+    def _fill_observable_dict(self, observable_dict, working_directory,
+                              local_ensemble_index):
+        self.logger.debug('Reading DM-map.')
+        [dm_map] = self._read_fits_file(path=working_directory,
+                                        name='dm.fits',
+                                        nside=self.nside)
+
+        dm_field = observable_dict['dm']
+        dm_field.val.data[local_ensemble_index] = dm_map
+
+        super(DMMixin, self)._fill_observable_dict(observable_dict,
+                                                   working_directory,
+                                                   local_ensemble_index)