Update app.py

app.py

@@ -69,11 +69,6 @@ def load_farm_coordinates():
         return None
 
 @st.cache_data
-def get_safe_index_value(_image, index_type, band_selection, _farm_geometry, image_date, farm_coords):
-    """محاسبه ایمن شاخص‌های گیاهی"""
-    if _image is None:
-        return None
-    try:
 def get_safe_index_value(_image, index_type, band_selection, _farm_geometry, image_date, farm_coords):
     """محاسبه ایمن شاخص‌های گیاهی"""
     if _image is None:
@@ -99,6 +94,11 @@ def get_safe_index_value(_image, index_type, band_selection, _farm_geometry, ima
                 index_image = _image.normalizedDifference(bands).rename(index_type)
             else:
                 return None
+                
+        mean_value = index_image.reduceRegion(
+            reducer=ee.Reducer.mean(),
+            geometry=_farm_geometry,
+            scale=10
         ).get(index_type if index_type != "MSAVI" else "MSAVI").getInfo()
         
         return mean_value if mean_value is not None else 0