Update main.py

main.py

@@ -178,6 +178,17 @@ async def assess_batch_multihazard(file: UploadFile = File(...), use_predicted_h
                 status_code=400,
                 detail="CSV must contain 'latitude' and 'longitude' columns"
             )
+        
+        # Validate coordinates
+        df = df[(np.abs(df['latitude']) <= 90) & (np.abs(df['longitude']) <= 180)]
+        if len(df) == 0:
+            raise HTTPException(status_code=400, detail="No valid coordinates in CSV (lat -90..90, lon -180..180)")
+
+        # Set defaults for optional columns
+        if 'height' not in df.columns:
+            df['height'] = 0.0
+        if 'basement' not in df.columns:
+            df['basement'] = 0.0
 
         loop = asyncio.get_event_loop()
         results = await loop.run_in_executor(