GEE python: use sampleRegions to extract image values to points

Traditional approach:
To extract imagery values ​​to points, you can use the spatial analysis tools in your GIS software. Here are some common steps:

1. Open the GIS software and load the image layer and point layer.
2. Use the spatial selection tool to select the points in the point layer where image values ​​need to be extracted.
3. Open the Spatial Analyst tool and select the Extract Values ​​operation.
4. Select the imagery layer in Operations, and adjust parameters such as extraction radius and interpolation method.
5. Run the operation and wait for the result. The result will give the image values ​​around each selected point.

This allows image values ​​to be extracted to points. Results can be saved as new data files or further analyzed and visualized in GIS software.

Method in GEE python:
Install the Earth Engine API and geemap
Install the Earth Engine's Python API and geemap. The geemap Python package is built on top of 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 script below checks if the geemap package is 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 ImportE