学遥感,分类是是常事,今天带来代码版的非监督分类。
var roi = ee.Geometry.Polygon([[[114.88544904095511,25.804448767604917],
[115.09830914837698,25.804448767604917],
[115.09830914837698,25.932959664484418],
[114.88544904095511,25.932959664484418],
[114.88544904095511,25.804448767604917]]]);
Map.centerObject(roi,7);
Map.setOptions("SATELLITE");
Map.addLayer(roi,{color:"00ff00"},"roi",false);
var l8Col = ee.ImageCollection("LANDSAT/LC08/C01/T1_SR")
.filterDate("2018-4-1","2018-10-1")
.filterBounds(roi)
.filter(ee.Filter.lte("CLOUD_COVER",50))
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