102_blend_hillshade.ipynb

Kernel: Python 3

Creating a shaded relief map by blending DEM and hillshade

Uncomment the following line to install geemap if needed.

# !pip install geemap

Import libraries

import ee
import geemap
import geemap.colormaps as cm

Create an interactive map

Map = geemap.Map()
Map

Add DEM and hillshade to the map

dem = ee.Image("CGIAR/SRTM90_V4")
hillsahde = ee.Terrain.hillshade(dem)

vis = {"min": 0, "max": 6000, "palette": cm.palettes.dem}

Map.addLayer(hillsahde, {}, "Hillshade")
Map.addLayer(dem, vis, "DEM")

Create a blended image by blending DEM and hillshade

blend = geemap.blend(top_layer=dem, top_vis=vis)

Map.addLayer(blend, {}, "Blend")

Add NLCD land cover to the map

nlcd = ee.Image("USGS/NLCD_RELEASES/2019_REL/NLCD/2019").select("landcover")
nlcd_vis = {"bands": ["landcover"]}
Map.addLayer(nlcd, nlcd_vis, "NLCD")

Create a blended image by blending NLCD and DEM.

result = geemap.blend(nlcd, dem, top_vis=nlcd_vis, expression="a*b")

Map.addLayer(result, {}, "Blend NLCD")