Question

大家好我有一个名为vertices []的OpenLayers点对象数组 vertices =＆＃34; POINT（78.40873715820317 17.400524043704443），要点（78.425388311768 17.38692766193279），要点（78.40238568725626 17.384142736159205）＆＃34;

我想用多边形格式更改它，坐标相同 vertices1 [] =＆＃34; POLYGON（（78.40873715820317 17.400524043704443,78.425388311768 17.38692766193279,78.40238568725626 17.384142736159205,78.40873715820317 17.400524043704443））＆＃34; 我怎么能以编程方式转换它。

Answer 1

尝试使用此代码：

var vertices="POINT(78.40873715820317 17.400524043704443), POINT(78.425388311768 17.38692766193279), POINT(78.40238568725626 17.384142736159205)";

var vertices_array = vertices.split(',');

var sitePoints = [];

for (var i=0;i<vertices_array.length;i++)
{
    var wkt = new OpenLayers.Format.WKT();

    var pointWKT = wkt.read(vertices_array[i]);

    var point = new OpenLayers.Geometry.Point(pointWKT.geometry.x, pointWKT.geometry.y);

    sitePoints.push(point);
}

var linearRing = new OpenLayers.Geometry.LinearRing(sitePoints);

var geometry = new OpenLayers.Geometry.Polygon([linearRing]);

var polygonFeature = new OpenLayers.Feature.Vector(geometry,null);

var polygonWKT = new OpenLayers.Format.WKT();

var output = polygonWKT.write(polygonFeature);

alert(output);

如何在osm中将点数据更改为多边形

1 个答案: