如何在彼此之上填充Google地图数据图层的颜色?

时间:2016-02-11 22:19:11

标签: javascript google-maps-api-3 geojson google-datalayer

我正在尝试绘制带有灰色背景的州(德克萨斯州)和背景较浅(白色)的城市(圣安东尼奥)的谷歌地图。我的方法是:

android.support.v4.app

但我得到的结果是整个州(包括县)都是灰色的。

请参阅此jsFiddle

1 个答案:

答案 0 :(得分:1)

一种选择是做一个"洞"在德克萨斯州MultiPolygon,圣安东尼奥是:

proof of concept fiddle

代码段(注意由于帖子中的字符限制,代码段包含德克萨斯州的简化多边形,小提琴包含完整的MultiPolygon)



var map;

function initialize() {
  map = new google.maps.Map(document.getElementById('map-canvas'), {
    center: {
      lat: 29.424122,
      lng: -98.493629
    },
    mapTypeId: google.maps.MapTypeId.TERRAIN,
    zoom: 5
  });

  // Load GeoJSON.
  var stateLayer = new google.maps.Data();
  var countyLayer = new google.maps.Data();

  stateLayer.addGeoJson(stateGeoJson);
  countyLayer.loadGeoJson('https://api.myjson.com/bins/3inb5');

  stateLayer.setStyle({
    fillColor: 'gray',
    strokeColor: '#000',
    strokeOpacity: 1,
    strokeWeight: 1
  });

  countyLayer.setStyle({
    fillColor: 'red',  // make red so I can see that it is working
    strokeColor: 'black',
    strokeOpacity: 1,
    strokeWeight: 1
  });

  stateLayer.setMap(map);
  countyLayer.setMap(map);
}

google.maps.event.addDomListener(window, 'load', initialize);

var stateGeoJson = {"type":"FeatureCollection","features":[{"type":"Feature","properties":{"GEO_ID":"0400000US48","STATE":"48","NAME":"Texas"},"geometry":{"type":"MultiPolygon","coordinates":[
// simplified texas
[[[-106.6552734375,32.0639555946604],[-103.0078125,32.0639555946604],[-103.0078125,36.491973470593685],[-99.9755859375,36.491973470593685],[-99.9755859375,34.59704151614417],[-99.0087890625,34.23451236236984],[-97.822265625,33.90689555128866],[-96.240234375,33.687781758439364],[-95.09765625,33.870415550941836],[-94.0869140625,33.43144133557529],[-94.0869140625,31.989441837922904],[-93.3837890625,31.05293398570514],[-93.9990234375,29.611670115197377],[-97.1630859375,27.916766641249065],[-97.470703125,26.745610382199025],[-97.03125,26.03704188651584],[-97.5146484375,25.878994400196202],[-99.140625,26.509904531413927],[-99.5361328125,27.68352808378776],[-100.3271484375,28.34306490482549],[-100.72265625,29.19053283229458],[-101.42578125,29.726222319395507],[-102.6123046875,29.76437737516313],[-103.095703125,28.998531814051795],[-104.6337890625,29.649868677972304],[-104.8974609375,30.524413269923986],[-106.6552734375,32.0639555946604]],
// san antonio
[[-98.68846,29.21083],
[-98.682015,29.20863],
[-98.63851,29.193774],
[-98.625318,29.189273],
[-98.590587,29.177251],
[-98.585943,29.175655],
[-98.58573,29.175582],
[-98.557348,29.165861],
[-98.547608,29.162526],
[-98.526902,29.155435],
[-98.52462,29.154688],
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[-98.497539,29.14541],
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[-98.431298,29.122507],
[-98.407336,29.114435],
[-98.397585,29.125244],
[-98.372654,29.1555],
[-98.330197,29.206269],
[-98.327196,29.209868],
[-98.304559,29.237003],
[-98.303019,29.23885],
[-98.300464,29.24191],
[-98.295924,29.247353],
[-98.29568,29.250546],
[-98.29246,29.251235],
[-98.28702,29.257626],
[-98.283214,29.26233],
[-98.255615,29.296176],
[-98.249288,29.303938],
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[-98.20469,29.358113],
[-98.204587,29.358236],
[-98.188143,29.378514],
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[-98.137187,29.440428],
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[-98.121075,29.449048],
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[-98.120243,29.457468],
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[-98.116902,29.463884],
[-98.118722,29.469263],
[-98.120577,29.470841],
[-98.121138,29.473542],
[-98.122276,29.473019],
[-98.124087,29.474003],
[-98.12488,29.475642],
[-98.123057,29.47638],
[-98.122322,29.477646],
[-98.12514,29.480196],
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[-98.13565,29.484216],
[-98.137172,29.484234],
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[-98.155754,29.477809],
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[-98.166943,29.489622],
[-98.168288,29.491169],
[-98.168344,29.496153],
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[-98.171507,29.496747],
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[-98.177608,29.487176],
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[-98.216354,29.524349],
[-98.218467,29.523369],
[-98.219147,29.52393],
[-98.219368,29.528533],
[-98.221078,29.531246],
[-98.222182,29.534811],
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[-98.224399,29.540312],
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[-98.242992,29.557058],
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[-98.250755,29.550017],
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[-98.255605,29.554917],
[-98.25853,29.554935],
[-98.259621,29.552449],
[-98.260075,29.549621],
[-98.25937,29.547487],
[-98.257806,29.545714],
[-98.253881,29.544211],
[-98.253021,29.54321],
[-98.253882,29.540982],
[-98.255377,29.540491],
[-98.259746,29.541265],
[-98.260658,29.542349],
[-98.264818,29.543949],
[-98.267432,29.544178],
[-98.270389,29.54573],
[-98.27084,29.548822],
[-98.272924,29.550878],
[-98.272973,29.550913],
[-98.273036,29.550913],
[-98.27333,29.551006],
[-98.279069,29.551141],
[-98.284329,29.553365],
[-98.287782,29.559373],
[-98.294766,29.561531],
[-98.298524,29.561141],
[-98.298328,29.56322],
[-98.29985,29.566868],
[-98.2999,29.566918],
[-98.301539,29.568342],
[-98.301882,29.568759],
[-98.301938,29.568828],
[-98.302308,29.569476],
[-98.302903,29.574654],
[-98.305066,29.576303],
[-98.306073,29.579114],
[-98.303927,29.582426],
[-98.304431,29.58522],
[-98.310636,29.589182],
[-98.312058,29.590854],
[-98.310928,29.594473],
[-98.31095,29.59456],
[-98.310837,29.598332],
[-98.312033,29.601543],
[-98.313292,29.602236],
[-98.31348,29.602263],
[-98.313494,29.602279],
[-98.314806,29.602844],
[-98.320456,29.601939],
[-98.326234,29.604079],
[-98.328651,29.608233],
[-98.328736,29.610537],
[-98.335328,29.611301],
[-98.339187,29.6131],
[-98.34234,29.617193],
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[-98.345673,29.619742],
[-98.342715,29.62195],
[-98.342271,29.62556],
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[-98.340604,29.630237],
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[-98.35672,29.732885],
[-98.356825,29.732614],
[-98.35692,29.732452],
[-98.359382,29.729037],
[-98.364366,29.724332],
[-98.369828,29.720693],
[-98.37521,29.719975],
[-98.375644,29.722654],
[-98.374999,29.724619],
[-98.3735,29.726022],
[-98.373248,29.729186],
[-98.373729,29.730594],
[-98.376967,29.732618],
[-98.384353,29.735141],
[-98.388262,29.733943],
[-98.390972,29.73648],
[-98.393632,29.736481],
[-98.399172,29.738111],
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