Google Maps API 中特定国家/地区的缩放级别 [英] Country specific zoom level in Google Maps API

问题描述

我正在尝试制作仅显示荷兰的 Google 地图.但是，当我使用缩放级别 6 时，它也会显示比利时和德国，而当我使用缩放级别 7 时，它会放大得太远，因为它没有显示完整的国家/地区.

我怎样才能只展示荷兰，而不展示德国和比利时(或者至少是其中很小的一部分).

目前看起来像这样:

解决方案

1. 转到来自迈克威廉姆斯的 v2 教程

   工作示例

   I'm trying to make a Google Map that only shows the Netherlands. But when I use zoom level 6 it shows Belgium and Germany as well and when I use zoom level 7 it zooms too far in that it doesn't show the complete country.

   How can I make The Netherlands show only, and not germany and belgium (or at least a very tiny part of them).

   Currently it looks something like this:
   
   

   解决方案

   1. go to http://www.gadm.org/download, download the adm0 file for the Netherlands

   2. Combine that polygon (as the inner ring(s)) with a polygon that covers the whole earth

   3. use the winding reversal tool to reverse any inner polygons that don't wind opposite the outer ring.

   4. zip up the resulting kml, rename to kmz. Display on the map using geoxml3

   Code:

   function initialize() {
       var map = new google.maps.Map(
       document.getElementById("map_canvas"), {
           center: new google.maps.LatLng(85.4419, -122.1419),
           zoom: 13,
           mapTypeId: google.maps.MapTypeId.ROADMAP
       });
       var geocoder = new google.maps.Geocoder();
       var geoXml = new geoXML3.parser({
                       map: map,
                       zoom: false, 
                    });
       geoXml.parse("http://www.geocodezip.com/geoxml3_test/kmz/nld_adm0_inverted.kmz");
       google.maps.event.addListener(geoXml,'parsed', function() {
         geocoder.geocode( { 'address': "Netherlands"}, function(results, status) {
           if (status == google.maps.GeocoderStatus.OK) {
             map.fitBounds(results[0].geometry.viewport);
           } else {
             alert("Geocode was not successful for the following reason: " + status);
           }
         });    
       })
   }
   google.maps.event.addDomListener(window, "load", initialize);
   

   Working example

   To restrict it to be always displayed on the map see this page from Mike Williams' v2 tutorial

   working example

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