make model_type optional in joint surveys ui.json

Author: benk-mira

simpeg_drivers-assets/uijson/joint_surveys_inversion.ui.json

@@ -76,7 +76,9 @@
         "main": true,
         "group": "Mesh and models",
         "label": "Model units",
-        "tooltip": "Select the units of the model",
+        "tooltip": "Allows users to enter resistivity values for conductivity inversions.",
+        "optional": true,
+        "enabled": false,
         "value": "Conductivity (S/m)"
     },
     "starting_model": {

simpeg_drivers/joint/joint_surveys/options.py

@@ -31,7 +31,7 @@ class JointSurveysModelOptions(JointModelOptions):
     :param reference_model: The reference model for the inversion.
     """
 
-    model_type: ModelTypeEnum = ModelTypeEnum.conductivity
+    model_type: ModelTypeEnum | None = ModelTypeEnum.conductivity
     starting_model: float | FloatData | None = None
     reference_model: float | FloatData | None = None
 

simpeg_drivers/options.py

@@ -335,7 +335,7 @@ class ConductivityModelOptions(ModelOptions):
     Options for the conductivity model used in all of EM methods.
     """
 
-    model_type: ModelTypeEnum = ModelTypeEnum.conductivity
+    model_type: ModelTypeEnum | None = ModelTypeEnum.conductivity
     conductivity_model: float | FloatData | None = Field(
         None,
         validation_alias=AliasChoices("background_conductivity", "conductivity_model"),