如何在GEE中使用shapefile资源作为AOI？

Question

我已经将shapefile的zip文件作为资源上传到了Google Earth Engine。我如何让它成为我的AOI？我已经尝试添加AOI作为坐标和ee.Geometry.Polygon，但它不能涵盖我需要的整个AOI，而我的shapefile可以。但是我不确定如何在我的代码中实现这些shapefile，所以它出现了。这是我代码的第一部分。我对此非常陌生，任何帮助都将不胜感激！:)

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var startDate = ee.Date('2018-12-01'); //2018-12-31'); GEE: 2017-03-28T00:00:00  ???
var endDate = ee.Date('2020-09-01'); //'2021-06-01'
var days = 45;
var cloud_shadow_percentage = 50; // (max)
var cloud_cover_percentage = 50;  // (max)

// note: Sentinel-2-SR from 2017-03-28 but TOA from 2015-06-23
// -----------------------------------------------------
//Map.addLayer(AOI, {}, 'AOI', true);  
Map.centerObject(AOI, 13);

var imageStartDate1 = startDate.advance(-days,"day");
var imageStartDate2 = startDate.advance(days,"day");
var imageEndDate1   = endDate.advance(-days,"day");
var imageEndDate2   = endDate.advance(days,"day");

//S2-SR: COPERNICUS/S2_SR //LANDSAT/LC08/C01/T1_SR
var S2 = ee.ImageCollection("COPERNICUS/S2_SR");

var imagery = ee.ImageCollection(S2)
    //.filterDate(imageEndDate1, imageEndDate2)
    .filterBounds(AOI)
    //.filterMetadata('CLOUD_SHADOW_PERCENTAGE', 'less_than', cloud_shadow_percentage)
    .filterMetadata('CLOUD_COVERAGE_ASSESSMENT', 'less_than', cloud_cover_percentage)
    ;

var Sen2_collection = ee.ImageCollection(imagery)
    .filterDate(imageStartDate1, imageStartDate2)
    .filterBounds(AOI);

var Sen2_ = ee.ImageCollection(Sen2_collection)
    .sort('CLOUD_COVERAGE_ASSESSMENT').first();  

var Sen2 =  ee.Image(Sen2_)
  .clip(AOI);

var Sen2end_collection = ee.ImageCollection(imagery)
    .filterDate(imageEndDate1, imageEndDate2)
    .filterBounds(AOI);

var Sen2end_ = ee.ImageCollection(Sen2end_collection)
    .sort('CLOUD_COVERAGE_ASSESSMENT').first(); 

var Sen2end =  ee.Image(Sen2end_)
  .clip(AOI);

Map.addLayer(Sen2, {bands:['B4', 'B3', 'B2'], min:0, max:5000}, 'rgb start', false);   
Map.addLayer(Sen2end, {bands:['B4', 'B3', 'B2'], min:0, max:5000}, 'rgb end', false);

print("Sen2_collection", Sen2_collection);
print("Sen2end_collection", Sen2end_collection);
print("Sen2", Sen2);
print("Sen2end", Sen2end);

Answer 1

更新

嗨!我找到了能让它工作的代码。希望这能对其他人有所帮助:)

//Display the shapefile into the interactive map
Map.addLayer(AOI);
//Display the view to the center of the screen and scale the view
Map.centerObject(AOI,13);
//Define styling and determine the color of the shapefile 
var styling = {color: 'red', fillColor: '00000000'};
Map.addLayer(AOI.style(styling));

https://sryhandiniputeri.medium.com/input-a-shapefile-in-google-earth-engine-d358ced1d095

将'AOI‘部分重命名为您的'var ___’导入的名称。

Answer 2

您的GEE代码运行良好，我只是将AOI用作多边形/shapefile，这是我的一项资产。

问题可能出在你正在使用的shapefile上。

1. 这可能是因为shapefile可能有大量的JSON，shapefile有太多的细节/曲线/边，请求到服务器的polygons/multipolygon
2. If有时会超过限制，GEE会给出错误。(如果是这种情况，则需要平滑shapefile的边界。)