Update app/data_persistence.py

app/data_persistence.py

@@ -41,6 +41,7 @@ class DataPersistence:
                 "internal_loads": session_state.get("internal_loads", {}),
                 "calculation_settings": session_state.get("calculation_settings", {}),
                 "saved_scenarios": DataPersistence._serialize_scenarios(session_state.get("saved_scenarios", {})),
+                "climate_data": session_state.get("climate_data", {}),
                 "timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S")
             }
             
@@ -82,6 +83,21 @@ class DataPersistence:
             if json_data:
                 project_data = json.loads(json_data)
                 
+                # Validate climate data latitude
+                if "climate_data" in project_data:
+                    valid_latitudes = [24, 32, 40, 48, 56]
+                    for location_id, location in project_data["climate_data"].items():
+                        if "latitude" in location:
+                            try:
+                                input_latitude = float(location["latitude"])
+                                nearest_latitude = min(valid_latitudes, key=lambda x: abs(x - input_latitude))
+                                if abs(input_latitude - nearest_latitude) > 0.1:  # Allow small float differences
+                                    st.warning(f"Latitude {input_latitude} for {location_id} is invalid for ASHRAE tables. Using nearest valid latitude: {nearest_latitude}.")
+                                    location["latitude"] = nearest_latitude
+                            except ValueError:
+                                st.error(f"Invalid latitude format for {location_id}: {location['latitude']}.")
+                                return None
+                
                 # Deserialize components
                 if "components" in project_data:
                     project_data["components"] = DataPersistence._deserialize_components(project_data["components"])
@@ -537,4 +553,4 @@ if __name__ == "__main__":
         }
     
     # Display project management interface
-    data_persistence.display_project_management(st.session_state)
+    data_persistence.display_project_management(st.session_state)