earthengine-jupyter

注意：这是一个实验性项目，不是一个官方支持的Google项目。欢迎使用，但我们不能保证稳定性。

设置

try:
  import ee_jupyter
  print('ee_jupyter was already installed.')
except ModuleNotFoundError:
  print('ee_jupyter was not found. Installing now...')
  import os
  result = os.system('pip -q install earthengine-jupyter')

Make sure that the earthengine-jupyter package is installed...

如何使用

这个库包含一个可以用来显示交互式地图的Map类。

import ee
from ee_jupyter.core import authenticate_if_needed
from ee_jupyter.ipyleaflet import Map

authenticate_if_needed()

✓ Authentication credentials were found.

# Intialize the Earth Engine client library.
ee.Initialize()

map1 = Map(center=(37.5924, -122.09), zoom=8)
map1

Map(center=[37.5924, -122.09], controls=(ZoomControl(options=['position', 'zoom_in_text', 'zoom_in_title', 'zo…

定义一个地球引擎图像图层，并将其添加到交互式地图中。

img1 = ee.Image("LANDSAT/LC09/C02/T1_L2/LC09_044034_20220127")
visualization = {
    'bands': ['SR_B4', 'SR_B3', 'SR_B2'],
    'min': 0.2 / 0.0000275,
    'max': 0.4 / 0.0000275,
}
map1.addLayer(eeObject=img1, visParams=visualization, name='Landsat scene')

我们还可以创建一个检查器对象，并将其与之前创建的地图关联起来。

from ee_jupyter.ipyleaflet import Inspector

inspector1 = Inspector(map_object=map1)
inspector1

Inspector(layout=Layout(border_bottom='solid', border_left='solid', border_right='solid', border_top='solid', …

通常，当您创建检查器对象时，您希望将其显示在地图附近。

from ipywidgets import HBox

display(HBox([map1, inspector1]))

HBox(children=(Map(center=[37.5924, -122.09], controls=(ZoomControl(options=['position', 'zoom_in_text', 'zoom…

显示地图图像

如果您想显示一个静态（非交互式）图像，也可以这样做。将embed=True参数设置为True将允许图像在笔记本中保存。

from IPython.display import Image


visualization['dimensions'] = 400  # maximum dimension for the image
url = img1.getThumbUrl(visualization)

Image(url=url, format='png', embed=True)