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import ee | |
import geemap | |
import solara | |
zoom = solara.reactive(4) | |
center = solara.reactive([40, -100]) | |
class Map(geemap.Map): | |
def __init__(self, **kwargs): | |
super().__init__(**kwargs) | |
self.add_ee_data() | |
self.add_layer_manager() | |
self.add_inspector() | |
def add_ee_data(self): | |
# Add Earth Engine dataset | |
dem = ee.Image('USGS/SRTMGL1_003') | |
landsat7 = ee.Image('LANDSAT/LE7_TOA_5YEAR/1999_2003').select( | |
['B1', 'B2', 'B3', 'B4', 'B5', 'B7'] | |
) | |
states = ee.FeatureCollection("TIGER/2018/States") | |
# Set visualization parameters. | |
vis_params = { | |
'min': 0, | |
'max': 4000, | |
'palette': ['006633', 'E5FFCC', '662A00', 'D8D8D8', 'F5F5F5'], | |
} | |
# Add Earth Engine layers to Map | |
self.addLayer(dem, vis_params, 'SRTM DEM', True, 0.5) | |
self.addLayer( | |
landsat7, | |
{'bands': ['B4', 'B3', 'B2'], 'min': 20, 'max': 200, 'gamma': 2.0}, | |
'Landsat 7', False | |
) | |
self.addLayer(states, {}, "US States") | |
def Page(): | |
with solara.Column(style={"min-width": "500px"}): | |
# solara components support reactive variables | |
# solara.SliderInt(label="Zoom level", value=zoom, min=1, max=20) | |
# using 3rd party widget library require wiring up the events manually | |
# using zoom.value and zoom.set | |
Map.element( # type: ignore | |
zoom=zoom.value, | |
on_zoom=zoom.set, | |
center=center.value, | |
on_center=center.set, | |
scroll_wheel_zoom=True, | |
add_google_map=True, | |
height="700px" | |
) | |
solara.Text(f"Zoom: {zoom.value}") | |
solara.Text(f"Center: {center.value}") | |