Smooth DEM

app.py

@@ -114,8 +114,11 @@ def get_dem_slope_maps(buffer_ee_geometry):
     dem_map = gee_folium.Map()
     dem_map.add_tile_layer(wayback_mapping[latest_date], name=f"Esri Wayback - {latest_date.replace('-', '/')}", attribution="Esri")
 
-    dem_layer = ee.Image("USGS/SRTMGL1_003").clip(buffer_ee_geometry)  
-    
+    dem_layer = ee.Image("USGS/SRTMGL1_003") 
+    # Set the target resolution to 10 meters
+    target_resolution = 10
+    dem_layer = dem_layer.resample('bilinear').reproject(scale=target_resolution).clip(buffer_ee_geometry) 
+
     # Generate contour lines using elevation thresholds
     terrain = ee.Algorithms.Terrain(dem_layer)
     contour_interval = 1
@@ -136,7 +139,7 @@ def get_dem_slope_maps(buffer_ee_geometry):
     slope_map.add_tile_layer(wayback_mapping[latest_date], name=f"Esri Wayback - {latest_date.replace('-', '/')}", attribution="Esri")
 
     # Calculate slope from the DEM
-    slope_layer = ee.Terrain.slope(ee.Image("USGS/SRTMGL1_003")).clip(buffer_ee_geometry).rename('slope')  
+    slope_layer = ee.Terrain.slope(ee.Image("USGS/SRTMGL1_003").dem_layer.resample('bilinear').reproject(scale=target_resolution)).clip(buffer_ee_geometry).rename('slope')  
     # Calculate the minimum and maximum values
     stats = slope_layer.reduceRegion(reducer=ee.Reducer.minMax(),scale=30,maxPixels=1e13)
     max_value = stats.get('slope_max').getInfo()