Question

当尝试使用OneMap地图覆盖图缩放到esri基本地图上的某个点时，我遇到了一些问题。这是通过传递邮政编码得到坐标x和y的函数：

function zoomPostal(postalCode) {
 $.getJSON("http://www.onemap.sg/API/services.svc/basicSearch?token=qo/s2TnSUmfLz+32CvLC4RMVkzEFYjxqyti1KhByvEacEdMWBpCuSSQ+IFRT84QjGPBCuz/cBom8PfSm3GjEsGc8PkdEEOEr" +
        "&searchVal=" + postalCode + "&otptFlds=SEARCHVAL,CATEGORY" +
        "&returnGeom=0&rset=1", function (data) {

     var x =  data.SearchResults[1].X;
     console.log(x);
     var y =  data.SearchResults[1].Y;
     console.log(y);
    var loc = new esri.geometry.Point({ 
        "x": x, 
        "y": y, 
        "spatialReference":'PROJCS["SVY21",GEOGCS["SVY21[WGS84]",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",28001.642],PARAMETER["False_Northing",38744.572],PARAMETER["Central_Meridian",103.8333333333333],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",1.366666666666667],UNIT["Meter",1.0]]' });           

    map.centerAndZoom(loc, 5);
        });

}

当我打印出x和y时，我得到的是23948.7465和47505.7986，这意味着它不是NaN或null。但是，使用这些代码，我收到错误消息：

Error: Invalid value for <image> attribute x="NaN" 
Error: Invalid value for <image> attribute y="NaN"

奇怪的是，如果我将坐标x和y硬编码为＆＃39; x＆＃34;和＆＃34; y＆＃34;在loc变量中，它确实放大并完美地工作。我不确定为什么它会以这种方式表现出来。

有什么想法吗？提前谢谢。

修改

这是显示错误消息的部分：

function zoomPostal(postalCode) {
 $.getJSON("http://www.onemap.sg/API/services.svc/basicSearch?token=qo/s2TnSUmfLz+32CvLC4RMVkzEFYjxqyti1KhByvEacEdMWBpCuSSQ+IFRT84QjGPBCuz/cBom8PfSm3GjEsGc8PkdEEOEr" +
        "&searchVal=" + postalCode + "&otptFlds=SEARCHVAL,CATEGORY" +
        "&returnGeom=0&rset=1", function (data) {

     var x =  data.SearchResults[1].X;
     console.log(x);
     var y =  data.SearchResults[1].Y;
     console.log(y);
    var loc = new esri.geometry.Point({ 
        "x": x, 
        "y": y, 
        "spatialReference":'PROJCS["SVY21",GEOGCS["SVY21[WGS84]",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",28001.642],PARAMETER["False_Northing",38744.572],PARAMETER["Central_Meridian",103.8333333333333],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",1.366666666666667],UNIT["Meter",1.0]]' });           
    console.log(loc.x);
    map.centerAndZoom(loc, 5);
        });

}

从这些代码中，当我打印出来时，变量x和y 以及 loc.x 我得到23948.7465和47505.7986但是错误消息在那里

然后，我尝试硬编码x和y ，方法是输入值，如下所示：

 function zoomPostal(postalCode) {
 $.getJSON("http://www.onemap.sg/API/services.svc/basicSearch?token=qo/s2TnSUmfLz+32CvLC4RMVkzEFYjxqyti1KhByvEacEdMWBpCuSSQ+IFRT84QjGPBCuz/cBom8PfSm3GjEsGc8PkdEEOEr" +
        "&searchVal=" + postalCode + "&otptFlds=SEARCHVAL,CATEGORY" +
        "&returnGeom=0&rset=1", function (data) {

     var x =  data.SearchResults[1].X;
     console.log(x);
     var y =  data.SearchResults[1].Y;
     console.log(y);
    var loc = new esri.geometry.Point({ 
        "x": 23948.7465, 
        "y": 47505.7986, 
        "spatialReference":'PROJCS["SVY21",GEOGCS["SVY21[WGS84]",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",28001.642],PARAMETER["False_Northing",38744.572],PARAMETER["Central_Meridian",103.8333333333333],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",1.366666666666667],UNIT["Meter",1.0]]' });           
    console.log(loc.x);
    map.centerAndZoom(loc, 5);
        });

}

使用这些代码，缩放功能完美无误。

Answer 1

这个怎么样......

function zoomPostal(postalCode) {
 $.getJSON("http://www.onemap.sg/API/services.svc/basicSearch?token=qo/s2TnSUmfLz+32CvLC4RMVkzEFYjxqyti1KhByvEacEdMWBpCuSSQ+IFRT84QjGPBCuz/cBom8PfSm3GjEsGc8PkdEEOEr" +
        "&searchVal=" + postalCode + "&otptFlds=SEARCHVAL,CATEGORY" +
        "&returnGeom=0&rset=1", function (data) {

     var x =  data.SearchResults[1].X;
     console.log(x);
     var y =  data.SearchResults[1].Y;
     console.log(y);
     var initializer = { "x": x, "y": y, "spatialReference":'PROJCS["SVY21",GEOGCS["SVY21[WGS84]",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",28001.642],PARAMETER["False_Northing",38744.572],PARAMETER["Central_Meridian",103.8333333333333],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",1.366666666666667],UNIT["Meter",1.0]]' }
    var loc = new esri.geometry.Point(initializer);           
    console.log(loc.x);
    map.centerAndZoom(loc, 5);
        });
}

错误：传入变量时<img/>属性的值无效

1 个答案: