我使用来自 http://www.aspsnippets.com/Articles/Google-Maps-V3-Draw-route-line-between-two-geographic-locations-Coordinates-Latitude-and-Longitude-points.aspx 的相同代码在这里我可以有 n 个点 我正在尝试更改未反射(reflect)的笔划颜色
<!DOCTYPE html >
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
</head>
<body>
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
var markers = [
{
"title": 'Alibaug',
"lat": '18.641400',
"lng": '72.872200',
"description": 'xxxx'
}
,
{
"title": 'Mumbai',
"lat": '18.964700',
"lng": '72.825800',
"description": 'yyyy'
}
,
{
"title": 'Pune',
"lat": '18.523600',
"lng": '73.847800',
"description": 'zzz'
}
];
window.onload = function () {
var mapOptions = {
center: new google.maps.LatLng(markers[0].lat, markers[0].lng),
zoom: 10,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("dvMap"), mapOptions);
var infoWindow = new google.maps.InfoWindow();
var lat_lng = new Array();
var latlngbounds = new google.maps.LatLngBounds();
for (i = 0; i < markers.length; i++) {
var data = markers[i]
var myLatlng = new google.maps.LatLng(data.lat, data.lng);
lat_lng.push(myLatlng);
var marker = new google.maps.Marker({
position: myLatlng,
map: map,
title: data.title
});
latlngbounds.extend(marker.position);
(function (marker, data) {
google.maps.event.addListener(marker, "click", function (e) {
infoWindow.setContent(data.description);
infoWindow.open(map, marker);
});
})(marker, data);
}
map.setCenter(latlngbounds.getCenter());
map.fitBounds(latlngbounds);
//***********ROUTING****************//
//Intialize the Path Array
var path = new google.maps.MVCArray();
//Intialize the Direction Service
var service = new google.maps.DirectionsService();
//Set the Path Stroke Color
var poly = new google.maps.Polyline({ map: map, strokeColor: 'red' });
//Loop and Draw Path Route between the Points on MAP
for (var i = 0; i < lat_lng.length; i++) {
if ((i + 1) < lat_lng.length) {
var src = lat_lng[i];
var des = lat_lng[i + 1];
path.push(src);
poly.setPath(path);
service.route({
origin: src,
destination: des,
travelMode: google.maps.DirectionsTravelMode.DRIVING
}, function (result, status) {
if (status == google.maps.DirectionsStatus.OK) {
for (var i = 0, len = result.routes[0].overview_path.length; i < len; i++) {
path.push(result.routes[0].overview_path[i]);
}
}
});
}
}
}
</script>
<div id="dvMap" style="width: 500px; height: 500px">
</div>
</body>
</html>
并将这一行替换为
var poly = new google.maps.Polyline({ map: map, strokeColor: 'red' });
and i tried to add color using the below code as
var colorVariable = ["white","green","blue","yellow","rose"];
for(var a =0;a<=5;a++){
var polyOptions = {
strokeColor: colorVariable[a],
strokeOpacity: 1.0,
strokeWeight: 2
}
poly = new google.maps.Polyline({ map: map, strokeColor: polyOptions });
poly.setMap(map);
}
但我没有得到不同的颜色笔画请说出如何整合它有什么问题
最佳答案
一条折线只能有一种颜色，你需要为每种颜色制作一条单独的折线:
function getDirections(src, des, color, map) {
//Intialize the Direction Service
var service = new google.maps.DirectionsService();
service.route({
origin: src,
destination: des,
travelMode: google.maps.DirectionsTravelMode.DRIVING
}, function (result, status) {
if (status == google.maps.DirectionsStatus.OK) {
//Intialize the Path Array
var path = [];
for (var i = 0; i < result.routes[0].overview_path.length; i++) {
path.push(result.routes[0].overview_path[i]);
}
//Set the Path Stroke Color
var polyOptions = {
strokeColor: color,
strokeOpacity: 1.0,
strokeWeight: 2,
path: path,
map: map
}
poly = new google.maps.Polyline(polyOptions);
poly.setMap(map);
}
});
}
代码片段:
var markers = [{
"title": 'Alibaug',
"lat": '18.641400',
"lng": '72.872200',
"description": 'xxxx'
}, {
"title": 'Mumbai',
"lat": '18.964700',
"lng": '72.825800',
"description": 'yyyy'
}, {
"title": 'Pune',
"lat": '18.523600',
"lng": '73.847800',
"description": 'zzz'
}];
// white is hard to see on the map tiles, removed.
var colorVariable = ["green", "blue", "yellow", "rose"];
window.onload = function() {
var mapOptions = {
center: new google.maps.LatLng(markers[0].lat, markers[0].lng),
zoom: 10,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("dvMap"), mapOptions);
var infoWindow = new google.maps.InfoWindow();
var lat_lng = new Array();
var latlngbounds = new google.maps.LatLngBounds();
for (i = 0; i < markers.length; i++) {
var data = markers[i]
var myLatlng = new google.maps.LatLng(data.lat, data.lng);
lat_lng.push(myLatlng);
var marker = new google.maps.Marker({
position: myLatlng,
map: map,
title: data.title
});
latlngbounds.extend(marker.position);
(function(marker, data) {
google.maps.event.addListener(marker, "click", function(e) {
infoWindow.setContent(data.description);
infoWindow.open(map, marker);
});
})(marker, data);
}
map.setCenter(latlngbounds.getCenter());
map.fitBounds(latlngbounds);
//***********ROUTING****************//
//Set the Path Stroke Color
var poly = new google.maps.Polyline({
map: map,
strokeColor: 'red'
});
//Loop and Draw Path Route between the Points on MAP
for (var i = 0; i < lat_lng.length; i++) {
if ((i + 1) < lat_lng.length) {
var src = lat_lng[i];
var des = lat_lng[i + 1];
getDirections(src, des, colorVariable[i], map);
}
}
}
function getDirections(src, des, color, map) {
//Intialize the Direction Service
var service = new google.maps.DirectionsService();
service.route({
origin: src,
destination: des,
travelMode: google.maps.DirectionsTravelMode.DRIVING
}, function(result, status) {
if (status == google.maps.DirectionsStatus.OK) {
//Intialize the Path Array
var path = [];
for (var i = 0; i < result.routes[0].overview_path.length; i++) {
path.push(result.routes[0].overview_path[i]);
}
//Set the Path Stroke Color
var polyOptions = {
strokeColor: color,
strokeOpacity: 1.0,
strokeWeight: 2,
path: path,
map: map
}
poly = new google.maps.Polyline(polyOptions);
poly.setMap(map);
}
});
}html,
body,
#dvMap {
height: 100%;
width: 100%;
margin: 0px;
padding: 0px
}<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk"></script>
<div id="dvMap"></div>关于javascript - 在 javascript 中更改 google map v3 上多折线描边的颜色，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33689866/