Install the Earth Engine Python API and geemap. The geemap Python package is built upon the ipyleaflet and folium packages and implements several methods for interacting with Earth Engine data layers, such as Map.addLayer()
, Map.setCenter()
, and Map.centerObject()
.
The following script checks if the geemap package has been installed. If not, it will install geemap, which automatically installs its dependencies, including earthengine-api, folium, and ipyleaflet.
# Installs geemap package
import subprocess
try:
import geemap
except ImportError:
print("geemap package not installed. Installing ...")
subprocess.check_call(["python", "-m", "pip", "install", "-U", "geemap"])
import ee
import geemap
The default basemap is Google Satellite
. Additional basemaps can be added using the Map.add_basemap()
function.
Map = geemap.Map(center=[40, -100], zoom=4)
Map.add_basemap("HYBRID") # Add Google Satellite
Map
# Retrieves ee.Feature() of the last drawing object.
Map.draw_last_feature
# Retrieves ee.Feature() of all drawing objects.
Map.draw_features
import ipywidgets as widgets
from ipyleaflet import WidgetControl
from geemap import geojson_to_ee
Map = geemap.Map(center=[40, -100], zoom=4)
Map.add_basemap("HYBRID") # Add
# Add Earth Engine dataset
image = ee.Image("USGS/SRTMGL1_003")
# Set visualization parameters.
vis_params = {
"min": 0,
"max": 4000,
"palette": ["006633", "E5FFCC", "662A00", "D8D8D8", "F5F5F5"],
}
# Get basemap layers
base_layers = Map.layers
# Add Earth Engine DEM to map
Map.addLayer(image, vis_params, "SRTM DEM")
# An empty list for storing drawing geometries
feat_list = []
# Get the DrawControl
dc = Map.draw_control
# Handle draw events
def handle_draw(self, action, geo_json):
geom = geojson_to_ee(geo_json, False)
feature = ee.Feature(geom)
feat_list.append(feature)
collection = ee.FeatureCollection(feat_list)
clip_image = image.clipToCollection(collection)
Map.layers = base_layers[:3]
Map.addLayer(clip_image, vis_params, "SRTM DEM")
# Map.addLayer(ee.Image().paint(collection, 0, 2), {'palette': 'red'}, 'EE Geometry')
Map.addLayer(collection, {}, "Drawing Features")
dc.on_draw(handle_draw)
# # Add a button to the map
# button = widgets.Button(description="Clear drawings")
# btn_control = WidgetControl(widget=button, position='bottomright')
# Map.add_control(btn_control)
# # Handle click event
# def on_button_clicked(b):
# dc.clear()
# button.on_click(on_button_clicked)
Map
# Print out the geojson of the last drawing object
dc.last_draw