我正在尝试制作一个具有多个融合表层的地图。每个融合表层将显示特定年份（包括所有年份的总和）与卡特尔相关的凶杀数量。由于每个层具有相同的几何结构，因此我需要让用户一次只查看一个层。是否有一种方法可以使用单选按钮切换每个层的开/关状态？我已经搜索了几个小时的教程或示例，但没有结果，所以希望这里的有人能够帮助。
这是地图副本的链接：https://mywebspace.wisc.edu/csterling/web/cartel%20map/index%20-%20practice.html 以下是代码（对格式不当表示抱歉）：
这是地图副本的链接：https://mywebspace.wisc.edu/csterling/web/cartel%20map/index%20-%20practice.html 以下是代码（对格式不当表示抱歉）：
<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>
编辑
好的，我明白了！以下是我的代码，以防其他人有同样的问题：
<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>