Update app.py

app.py

@@ -2327,7 +2327,17 @@ def Morphometric_Analysis_for_Watershedstreams_page():
     Morphometric_Analysis_for_Watershedstreams()
     
 #------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-
+import os
+import uuid
+import tempfile
+import streamlit as st
+import geopandas as gpd
+import geemap
+import plotly.graph_objects as go
+import matplotlib.pyplot as plt
+import ee
+from google_trans_new import google_translator
+from streamlit_draw import Draw
 
 def Morphometric_Analysis_for_Watershedstreams():
     translator = google_translator()  
@@ -2337,11 +2347,11 @@ def Morphometric_Analysis_for_Watershedstreams():
     draw = Draw(export=True, filename='drawn_shapes')  # Initialize the Draw plugin
     draw.add_to(Map)
 
-    
     # Language selection
     language = st.sidebar.selectbox("Select Language", ["English", "Spanish", "French", "German", "Chinese"])
 
     uploaded_file = st.file_uploader("Upload a KML file or other supported format")
+    
     @st.cache_data
     def uploaded_file_to_gdf(data):
         _, file_extension = os.path.splitext(data.name)
@@ -2367,7 +2377,6 @@ def Morphometric_Analysis_for_Watershedstreams():
     
     st.sidebar.header(translate_text("Map Controls"))
     
-    # Caching to improve performance
     @st.cache_data
     def get_dem_layers():
         return {
@@ -2396,7 +2405,9 @@ def Morphometric_Analysis_for_Watershedstreams():
             'Local Watershed Dataset': ee.FeatureCollection("users/mynet34/1HAVZA/4_CATCHMENT_1"),
         }
     
-
+    # Function to clip image to shape
+    def clip_image_to_shape(image, shape):
+        return image.clip(shape.geometry())
     
     # Function to add DEM layers
     def add_dem_layer(choice):
@@ -2439,17 +2450,22 @@ def Morphometric_Analysis_for_Watershedstreams():
             st.sidebar.warning(translate_text("Please draw a shape on the map first."))
             return
         
-        # Extract elevation data along the shape
+        # Sample DEM image
         dem_image = ee.Image('JAXA/ALOS/AW3D30/V2_2').select(['AVE_DSM'], ['b1'])
+        
+        # Clip the DEM image to the drawn shape
+        clipped_dem = clip_image_to_shape(dem_image, shape)
+
+        # Extract elevation data along the shape
         shape_coords = shape.geometry().coordinates().getInfo()
-            
+        
         # Convert shape coordinates into a feature collection
         shape_fc = ee.FeatureCollection([
             ee.Feature(ee.Geometry.Point(coord)) for coord in shape_coords
         ])
         
         # Sample elevation values along the shape
-        elevation_values = dem_image.sampleRegions(
+        elevation_values = clipped_dem.sampleRegions(
             collection=shape_fc,
             scale=30,
             geometries=True
@@ -2478,7 +2494,6 @@ def Morphometric_Analysis_for_Watershedstreams():
         plt.ylabel(translate_text("Elevation (m)"))
         st.pyplot(plt)
 
-
     # Button to calculate the elevation profile
     if st.sidebar.button(translate_text("Calculate Elevation Profile")):
         calculate_elevation_profile()
@@ -2558,7 +2573,6 @@ def Morphometric_Analysis_for_Watershedstreams():
     # Export/download options
     st.sidebar.download_button(label=translate_text("Export Analysis as CSV"), data="Generated Data", file_name="analysis.csv", mime="text/csv")
     st.sidebar.download_button(label=translate_text("Download Map Screenshot"), data="Map Screenshot", file_name="map.png", mime="image/png")
-
    
 #---------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 # Create a dictionary of pages