GEE下载DEM高程数据代码教程

var dataset = ee.Image('USGS/SRTMGL1_003');

var elevation = dataset.select('elevation');

var data = dataset.clip(roi);

var SA_DEM = data.select('elevation');

print(SA_DEM,'elevation');

Map.addLayer(SA_DEM,{min:0,max:3000},'StudyArea');

//Map.addLayer(dataset,{min:0,max:3000},'Dataset');

Export.image.toDrive({

 image:SA_DEM,

 description:'STRMDEM',

 scale:30,

 region:roi,

 maxPixels:1e13

})