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[英]Toggle Off/On Google Fusion Layer (Google Javascript API v3)
[英]How to toggle a layer on/off using Google Maps API v3 and Fusion Tables?
我正在嘗試制作具有多個融合表層的地圖。 每個融合表層將顯示特定年份中與卡特爾相關的殺人案件的數量(包括所有年份的總和)。 由於每個圖層都具有相同的幾何圖形,因此我需要讓用戶一次查看一個圖層。 有沒有辦法使用單選按鈕打開/關閉每一層? 我已經搜索了幾個小時的教程或示例,並且已經空了,所以我希望有人可以提供幫助。
以下是地圖副本的鏈接: https : //mywebspace.wisc.edu/csterling/web/cartel%20map/index%20-%20practice.html
這是代碼(抱歉格式化)
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?key=AIzaSyDRngi4TwTlx3r9zRXxIGzbSAq6OcEpxjA&sensor=false"></script>
<link rel='stylesheet' href='stylesheet.css' />
<script type="text/javascript" src="script.js"></script>
<script type='text/javascript'>
window.onload = function () {
var oceanStyle = [
{
featureType: "ocean",
stylers: [
{ saturation: -100 }
]
},
{
featureType: "all",
elementType: "labels",
stylers: [
{ visibility: "off"}
]
}
];
var oceanMapType = new google.maps.StyledMapType(oceanStyle,
{name: "Grayscale"});
var myLatlng = new google.maps.LatLng(0,0);
var mapOptions = {
center: new google.maps.LatLng(24,-103),
zoom: 5,
//mapTypeId: google.maps.MapTypeId.HYBRID,
mapTypeControl: true,
mapTypeControlOptions: {
position: google.maps.ControlPosition.RIGHT_TOP,
mapTypeIds: [google.maps.MapTypeId.HYBRID, 'Grayscale']
},
panControl: false,
streetViewControl: false,
zoomControl: true,
zoomControlOptions: {
style: google.maps.ZoomControlStyle.SMALL
}
};
var map = new google.maps.Map(document.getElementById("mymap"), mapOptions);
map.mapTypes.set('Grayscale',oceanMapType);
map.setMapTypeId('Grayscale');
var layer1 = new google.maps.FusionTablesLayer({
query:{
select: 'unique_id',
from: '3943497'
},
map: map
});
/*
var layer2 = new google.maps.FusionTablesLayer({
query:{
select: 'unique_id',
from: '3962564'
},
map: map
}); */
}
</script>
</head>
<body>
<div id='mymap'></div>
#
編輯
#好,我知道了! 這是我的代碼,以防其他人有同樣的問題:
<html> <head> <!-- <script src='http://maps.google.com/maps/api/js?sensor=false' type='text/javascript'></script> --> <script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?key=AIzaSyDRngi4TwTlx3r9zRXxIGzbSAq6OcEpxjA&sensor=false"></script> <link rel='stylesheet' href='stylesheet.css' />
var map; //var layArray = []; var shownLayer; var layer_sum; var layer_2007; var layer_2008; var layer_2009; var layer_2010; function toggleLayer(this_layer){ shownLayer.setMap(null); this_layer.setMap(map); shownLayer = this_layer; /*if ( this_layer.getMap() ) { this_layer.setMap(null); }else{ this_layer.setMap(map); }*/ } window.onload = function () { var oceanStyle = [ { featureType: "ocean", stylers: [ { saturation: -100 } ] }, { featureType: "all", elementType: "labels", stylers: [ { visibility: "off"} ] } ]; var oceanMapType = new google.maps.StyledMapType(oceanStyle, {name: "Grayscale"}); var myLatlng = new google.maps.LatLng(0,0); var mapOptions = { center: new google.maps.LatLng(24,-103), zoom: 6, //mapTypeId: google.maps.MapTypeId.HYBRID, mapTypeControl: true, mapTypeControlOptions: { position: google.maps.ControlPosition.RIGHT_TOP, mapTypeIds: [google.maps.MapTypeId.HYBRID, 'Grayscale'] }, panControl: true, streetViewControl: false, zoomControl: true, zoomControlOptions: { style: google.maps.ZoomControlStyle.SMALL } }; map = new google.maps.Map(document.getElementById("mymap"), mapOptions); map.mapTypes.set('Grayscale',oceanMapType); map.setMapTypeId('Grayscale'); layer_sum = new google.maps.FusionTablesLayer({ query:{ select: 'unique_id', from: '3943497' }, }); layer_2007 = new google.maps.FusionTablesLayer({ query:{ select: 'unique_id', from: '3962564' }, }); layer_2008 = new google.maps.FusionTablesLayer({ query:{ select: '2008', from: '3962469' }, }); layer_2009 = new google.maps.FusionTablesLayer({ query: { select: '2009', from: '3964318' }, }); layer_2010 = new google.maps.FusionTablesLayer({ query: { select: '2010', from: '3964517' }, }); layer_sum.setMap(map); shownLayer = layer_sum; } </script> </head> <body> <div id='mymap'></div> <div id='map-optionbar-r'> Sum of Homicides<input name="layers" type="radio" value="layer_sum" onClick="toggleLayer(layer_sum);" checked><br /> Homicides - 2007<input name="layers" type="radio" value="layer_2007" onClick="toggleLayer(layer_2007);"><br /> Homicides - 2008<input name="layers" type="radio" value="layer_2008" onClick="toggleLayer(layer_2008);"><br /> Homicides - 2009<input name="layers" type="radio" value="layer_2009" onClick="toggleLayer(layer_2009);"><br /> Homicides - 2010<input name="layers" type="radio" value="layer_2010" onClick="toggleLayer(layer_2010);"><br /> </div>
toggleLayer(layer1);
// make sure your map is a global
function toggleLayer(this_layer)
{
if( this_layer.getMap() ){
this_layer.setMap(null);
}else{
this_layer.setMap(map);
}
}
</head>
<body>
<br />
Layer 1<input name="layers" type="radio" value="layer1" onClick="toggleLayer(layer1);"><br />
Layer 2<input name="layers" type="radio" value="layer2" onClick="toggleLayer(layer2);"><br />
更新
<script type='text/javascript'>
var map, layer1, layer2;
google.load("maps", "3", {other_params:"sensor=false"});
window.onload = function () {
var oceanStyle = [
{
featureType: "ocean",
stylers: [
{ saturation: -100 }
]
},
{
featureType: "all",
elementType: "labels",
stylers: [
{ visibility: "off"}
]
}
];
var oceanMapType = new google.maps.StyledMapType(oceanStyle,
{name: "Grayscale"});
var myLatlng = new google.maps.LatLng(0,0);
var mapOptions = {
center: new google.maps.LatLng(24,-103),
zoom: 5,
//mapTypeId: google.maps.MapTypeId.HYBRID,
mapTypeControl: true,
mapTypeControlOptions: {
position: google.maps.ControlPosition.RIGHT_TOP,
mapTypeIds: [google.maps.MapTypeId.HYBRID, 'Grayscale']
},
panControl: false,
streetViewControl: false,
zoomControl: false,
zoomControlOptions: {
style: google.maps.ZoomControlStyle.SMALL
}
};
map = new google.maps.Map(document.getElementById("mymap"), mapOptions);
map.mapTypes.set('Grayscale',oceanMapType);
map.setMapTypeId('Grayscale');
layer1 = new google.maps.FusionTablesLayer({
query:{
select: 'unique_id',
from: '3943497'
},
//map: map
});
layer2 = new google.maps.FusionTablesLayer({
query:{
select: 'unique_id',
from: '3962564'
}
//map: map
});
// may need to remove this line
//layer1.setMap(map);
}
function old_toggleLayer(this_layer){
if ( this_layer.getMap() ) {
this_layer.setMap(null);
}else{
this_layer.setMap(map);
}
}
function toggleLayer(this_layer){
layer1.setMap(null);
layer2.setMap(null);
this_layer.setMap(map);
}
</script>
請參閱打開/關閉天氣層以及其他選擇 ; 我做了這個(在肖恩的超級幫助下)用於天氣/雲層。 我想你可以用同樣的方式打開/關閉所有其他層,因為我也有FT層激活。 只需撕掉我的代碼並進行調整即可。 干杯! 坦率
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