GEE基于哨兵数据Sentinel计算修正归一化差值水体指数MNDWI

// 编写一个函数，用于计算图像的MNDWI，并将其添加为波段

function addMNDWI(image) {

 var mndwi = image.normalizedDifference(['B3', 'B11']).rename('MNDWI');

 return image.addBands(mndwi).select("MNDWI");

}

// 将函数映射到集合上

var withMNDWI = filtered.map(addMNDWI).median().clip(geometry);

print(withMNDWI)

var precipitationVis = {

 min: 0,

 max: 1,

 palette: ['001137', '0aab1e', 'e7eb05', 'ff4a2d', 'e90000'],

};

Map.addLayer(withMNDWI,precipitationVis)

Export.image.toDrive({

   image: withMNDWI,

   description: '2020year',

   region: geometry,

   scale: 10,

   maxPixels: 1e13,

   folder: 'LCZ'

  })