Question

Я много искал в Интернете и нашел похожий вопрос, но, к сожалению, никто не решил проблему, поэтому я открыл собственный вопрос, надеясь, что кто-то найдет решение.

По сути, я хочу отобразить конкретный городВ данном случае Milan находится в Италии.Я успешно инициализировал карту:

var myMap;
var myLatlng = new google.maps.LatLng(45.4627123, 9.1075212,12);
function initialize() {
    var mapOptions = {
        zoom: 13,
        center: myLatlng,
        mapTypeId: google.maps.MapTypeId.ROADMAP,
        scrollwheel: false
    }
    myMap = new google.maps.Map(document.getElementById('worldMap'), mapOptions);
    var marker = new google.maps.Marker({
        position: myLatlng,
        map: myMap,
        title: Lang.geolocation,
        icon: 'http://www.google.com/intl/en_us/mapfiles/ms/micons/red-dot.png'
    });
}
google.maps.event.addDomListener(window, 'load', initialize);

это отображение карты:

, но я хочу отобразить только город Milan как:

как я могу это сделать?

ps: последнее изображение получено из плагина jvectormap

geocodezip · Answer 1 · 14 февраля 2019

Один вариант:

перейти к http://www.gadm.org/download, загрузить файл adm3 для Италии (вы можете использовать другие источники данных, которые были у Natural Earthаналогичная информация)
Распакуйте этот файл, отредактируйте содержащийся KML, чтобы удалить все <Placemark>, которые не Милан .
Объедините этот многоугольник (как внутреннее кольцо (кольца)) с многоугольником, который покрывает всю землю (более подробно в моем ответе на вопрос: Инвертированная граница страны KML )
Показать на карте с помощью geoxml3 ( пример )

подтверждение концепции скрипта

Код:

function initialize() {
  var map = new google.maps.Map(
  document.getElementById("map_canvas"), {
    center: new google.maps.LatLng(45.468889,9.202216),
    zoom: 11,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  });
  var geoXml = new geoXML3.parser({
    map: map,
    suppressInfoWindows: true,
    zoom: false, 
  });
  geoXml.parse("http://www.geocodezip.com/geoxml3_test/kml/Milano_inverted.kml");
}
google.maps.event.addDomListener(window, "load", initialize);

Рабочий пример

фрагмент кода:

var map;

function initialize() {
  map = new google.maps.Map(document.getElementById('map'), {
    center: new google.maps.LatLng(45.468889, 9.202216),
    zoom: 11,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  });
  var geoXml = new geoXML3.parser({
    map: map,
    suppressInfoWindows: true,
    zoom: false,
  });
  // geoXml.parse("http://www.geocodezip.com/geoxml3_test/kml/Milano_inverted.kml");
  geoXml.parseKmlString(kmlStr);
}
google.maps.event.addDomListener(window, "load", initialize);
var kmlStr = '<?xml version="1.0" encoding="utf-8" ?><kml xmlns="http://www.opengis.net/kml/2.2"><Document id="root_doc"><Style id="1"><LineStyle><width>1.5</width><color>ff000000</color></LineStyle><PolyStyle><color>aa0000df</color><fill>1</fill></PolyStyle></Style><Folder><name>gadm36_ITA_3</name><Placemark><Style><LineStyle><width>1.5</width><color>ff000000</color></LineStyle><PolyStyle><color>ff000000</color><fill>1</fill></PolyStyle></Style><ExtendedData><SchemaData schemaUrl="#gadm36_ITA_3"><SimpleData name="NAME_0">Italy</SimpleData><SimpleData name="NAME_1">Lombardia</SimpleData><SimpleData name="NAME_2">Milano</SimpleData><SimpleData name="NAME_3">Milano</SimpleData>	</SchemaData></ExtendedData><MultiGeometry><Polygon><outerBoundaryIs><LinearRing><coordinates>180,85 90,85 0,85 -90,85 -180,85 -180,0 -180,-85 -90,-85 0,-85 90,-85 180,-85 180,0 180,85</coordinates></LinearRing></outerBoundaryIs><innerBoundaryIs><LinearRing><coordinates>9.10490036010737,45.4479179382324 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9.05501174926763,45.4457740783693 9.0548992156983,45.4460754394532 9.05060005187994,45.4556503295898 9.0476131439209,45.4602508544922 9.0439071655274,45.4646644592286 9.04613780975336,45.4665298461914 9.05269336700439,45.462818145752 9.05469322204596,45.4623146057129 9.05588817596436,45.4622917175294 9.05607795715332,45.4622917175294 9.05623435974127,45.4622955322267 9.06781005859369,45.4639282226563 9.07191085815424,45.4654083251953 9.07532119750988,45.4712715148926 9.07441997528076,45.4788742065431 9.06786823272711,45.4873771667482 9.06106090545654,45.4951515197755 9.06095695495605,45.495231628418 9.060227394104,45.4957962036133 9.05761909484863,45.4985694885254 9.05471611022955,45.5046958923341 9.05492973327648,45.5057983398437 9.0555629730224,45.5059471130371 9.0563821792602,45.5061416625978 9.05720233917248,45.5062828063965 9.05750656127935,45.5063323974611 9.05772590637218,45.5063705444335 9.06138706207275,45.5054969787599 9.06151580810541,45.505313873291 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html,
body,
#map {
  height: 100%;
  margin: 0;
  padding: 0;
}

<div id="map"></div>
<!-- Replace the value of the key parameter with your own API key. -->
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/gh/geocodezip/geoxml3@master/polys/geoxml3.js"></script>

Чтобы ограничить его постоянное отображение на карте, см. эту страницу из учебник Майка Уильямса v2

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Как отобразить определенный город в Google Maps API?

Пожалуйста, войдите или зарегистрируйтесь чтобы ответить на этот вопрос.

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