Google Earth Engine（GEE）——JavaScript基本功能介绍（变量和数据类型及几何类型的简介）

var variableName = ee.ContainerType(value);

Map.setCenter(long, lat, zoomLevel);

print(variableName);

Map.addLayer(variableName);

var str = ee.String('This is a string. Or is it? It is.');

var num = ee.Number(5);

var arr = ee.Array([[5, 2, 3], [-2, 7, 10], [6, 6, 9]]);

var lis = ee.List([5, 'five', 6, 'six']);

var dict = ee.Dictionary({five: 5, six: 6});

var poi = ee.Geometry.Point(0, 45);

var multi = ee.Geometry.MultiPoint(0, 45, 5, 6, 70, -56);

var lineStr = ee.Geometry.LineString([[0, 45], [5, 6], [70, -56]]);

var mLineStr =
ee.Geometry.MultiLineString(
    [[[0, 45], [5, 6], [70, -56]], [[0, -45], [-5, -6], [-70, 56]]]);

var linRin = ee.Geometry.LinearRing(0, 45, 5, 6, 70, -56, 0, 45);

//每一个点相当于默认的一个坐标
var rect = ee.Geometry.Rectangle(0, 0, 60, 30);

var poly = ee.Geometry.Polygon([[[0, 0], [6, 3], [5, 5], [-30, 2], [0, 0]]]);

var multiPoly =
ee.Geometry.MultiPolygon(
    [ee.Geometry.Polygon([[0, 0], [6, 3], [5, 5], [-30, 2], [0, 0]]),
ee.Geometry.Polygon([[0, 0], [-6, -3], [-5, -5], [30, -2], [0, 0]])]);