Update app.py

app.py

@@ -71,10 +71,11 @@ selected_farm_data = farm_data[farm_data['Farm'] == selected_farm]
 coordinates = (selected_farm_data['longitude'].iloc[0], selected_farm_data['latitude'].iloc[0])  
 
 
-if st.button("Calculate NDRE and Show Map"):  
-    ndre_value = calculate_ndre(coordinates, start_date.strftime("%Y-%m-%d"), end_date.strftime("%Y-%m-%d"))  
-    if ndre_value is not None:  
-        st.write(f"NDRE Value: {ndre_value}")  
+# Inside the 'نمایش نقشه NDRE' button's code block
+if st.button('نمایش نقشه NDRE'):
+    # Call the function and store the returned value in 'NDRE'
+    NDRE = calculate_ndre(coordinates, start_date, end_date)
+    st.write(f'شاخص NDRE: {NDRE}') 
         # Map Display (Replace with your actual map display logic)  
         Map = geemap.Map()  
         Map.centerObject(ee.Geometry.Point(coordinates), 12)