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我有一个函数可以让最近的点（农民）到一个特定的点（客户），我在客户周围做了一个与用户有距离的缓冲区，然后我使用 turf.within 来获取这个缓冲区内的所有点（农民） . 如果我在变量中给出特征集合中的坐标数组，它工作正常searchWithin，但是当我将它作为变量（数组）给出时，在这种情况下，缓冲区的点bufresult不起作用。

function Find_Nearest()
{
//getting the orderid to get the customer id
var select1 = document.getElementById('OrderId');
var Order_ID = select1.options[select1.selectedIndex].text;
var Cust_Name = document.getElementById('CustName').textContent;

//to check the distance entered by user
var select = document.querySelector('input[name="optradio"]:checked').value;
var dist=document.getElementById('dist').value; 

if (select == "EnterRange") 
{
    if (dist == null || dist == "" || isNaN(dist) ) 
    {
        alert("Please enter a valid range");
        document.getElementById('dist').focus() ;   
    }
    else { distance=dist;}
}
else { distance=select;}

$.ajax({
    type:"POST",
    url:"CustomerID_geojson.php",
    data:{'Cust_Name': Cust_Name} ,
    dataType: 'json',
    success: function (response) 
    {
        var unit = 'kilometers';
        var buffered = turf.buffer(response, distance, unit);
        var bufresult = new Array();
        bufresult.push(buffered.geometry.coordinates);

        $.ajax({
        type: "POST",
        url: 'allfarmers_geojson.php',
        dataType: 'json',
        success: function (data) 
        {
            var searchWithin = {
              "type": "FeatureCollection",
              "features": [
                {
                  "type": "Feature",
                  "properties": {},
                  "geometry": {
                    "type": "Polygon",
                    "coordinates": bufresult //the problem is here
                //    [[
                //      [126.5443329669793,8.71772],
                //      [126.17866648348965,9.34375583885896],
                //      [125.44733351651035,9.34375583885896],
                //      [125.08166703302071,8.71772],
                //      [125.44733351651035,8.091684161141039],
                //      [126.17866648348965,8.091684161141039],
                //      [126.5443329669793,8.71772]
                //    ]]
                  }
                }
              ]
            };

            console.log(bufresult);
            console.log(searchWithin);

            var ptsWithin = turf.within(data, searchWithin);
            console.log(ptsWithin);         
            geojsonLayer = L.geoJson(ptsWithin).addTo(mymap);
            mymap.fitBounds(geojsonLayer.getBounds());
        }
        });
     }
});
}
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1 回答 1

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您是否尝试过更换

var bufresult = new Array(); 和 bufresult.push(buffered.geometry.coordinates);

和

bufresult = buffered.geometry.coordinates

我认为问题可能是您正在初始化一个数组 ( bufresult)，然后将缓冲的几何坐标推入该数组。您实际上可以bufresult一起跳过变量，只需将buffered.geometry.coordinates变量插入您正在使用的位置bufresult。如果这对你不起作用，请告诉我。您还可以包括您遇到的错误吗？

于 2016-11-28T19:15:30.083 回答