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我正在尝试在美国县周围建立一个多边形。多边形的坐标来自数据库和 json 编码以在 javascript 中使用。这是来自 php 代码的 json 编码数组

{"Abbeville-sc":[["34.02593","-82.59388"],["34.02629","-82.59383"],["34.03162","-82.5975"],["34.04056","-82.60997"],["34.05677","-82.62081"],["34.06238","-82.62598"],["34.0649","-82.63427"],["34.06788","-82.64052"],["34.07661","-82.64548"],["34.08025","-82.64416"],["34.08676","-82.64022"],["34.09155","-82.64131"],["34.0947","-82.64426"],["34.09827","-82.64744"],["34.09987","-82.65131"],["34.10116","-82.65488"]]}

我构建多边形的方式如下：

    var points = []
    for(j=0;j < counties[i].length;j++)
    {
        var Latit =  parseFloat(counties[i][j][0]);
        var Longit = parseFloat(counties[i][j][1]);
        var ll = new google.maps.LatLng(Latit,Longit);
        points.push(ll);
    }

      var county = new google.maps.Polygon({
        paths: points,
        strokeColor: '#000',
        strokeOpacity: 0,
        strokeWeight: 2,
        fillColor:  '#000',
        fillOpacity: 0
      });

其中counties[i] 是abbeville-sc。我遇到的问题是它没有按预期创建多边形。任何形式的帮助将不胜感激。

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1 回答 1

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看起来您的多边形是用不可见的边框和填充创建的。不透明度的工作方式类似于百分比的十进制表示。

1 = 100% = opaque
0 = 0% = transparent

将不透明度值设置为大于 0 但不大于 1 的值。

于 2012-09-06T15:14:07.173 回答