坐标系 var spatialReference = new SpatialReference(4326);1要素坐标点 var pointArr = [ new Point(116.94431351934418, 36.642791191513744, spatialReference), new Point(116.94313181636085,36.644263733181496, spatialReference), new Point(116.94323946773243, 36.64…
// All material copyright ESRI, All Rights Reserved, unless otherwise specified. // See https://js.arcgis.com/4.10/esri/copyright.txt for details. //>>built ; ;sdfsd sd;;; define('esri/widgets/Widget esri/widgets/support/widget'.split(' '), function…
Arcgis js之web墨卡托(3857)转经纬度坐标(4326) 手动转化方法: function mercatorTolonlat(mercator){ var lonlat={x:0,y:0}; var x = mercator.x/20037508.34*180; var y = mercator.y/20037508.34*180; y= 180/Math.PI*(2*Math.atan(Math.exp(y*Math.PI/180))-Math.PI/2); lonlat.x =…
Linq to SQL 语法查询(链接查询,子查询 & in操作 & join,分组统计等) 子查询 描述:查询订单数超过5的顾客信息 查询句法: var 子查询 = from c in ctx.Customers where (from o in ctx.Orders group o by o.CustomerID into o where o.Count() > 5 select o.Key).Contains(c.CustomerID) select c; in 操作 描述:查…