在地图框gl中单击高亮显示特征
highlight feature with click in mapbox gl
我有一个geojson街道层，当鼠标悬停在上面时，这些街道会高亮显示。
我现在的目标是通过点击事件突出显示各个街道的红色。一次只能高亮显示一条街道，并且在单击另一条街道之前应保持高亮显示。
有什么想法需要添加到以下代码中吗？
<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8' />
<title>HTML markers from geoJSON url</title>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.15.0/mapbox-gl.js'></script>
<link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.15.0/mapbox-gl.css' rel='stylesheet'/>
<style>
body { margin:0; padding:0; }
#map { position:absolute; top:0; bottom:0; width:100%; }
</style>
</head>
<body>
<div id='map'></div>
<script>
mapboxgl.accessToken = 'pk.eyJ1IjoiaXNrYW5kYXJibHVlIiwiYSI6ImNpbHIxMXA3ejAwNWl2Zmx5aXl2MzRhbG4ifQ.qsQjbbm1A71QzVg8OcR7rQ';
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/dark-v8',
center: [37.625224, 55.744537,],
zoom: 13
});
map.on('style.load', function () {
map.addSource('streets', {
"type": "geojson",
"data": "https://iskandarblue.github.io/mapbox/data/simplify_prototype.geojson"
});
map.addLayer({
"id": "m_streets",
"type": "line",
"source": "streets",
"interactive": true,
"layout": {},
"paint": {
"line-color": "#627BC1",
"line-opacity": 0.0,
"line-width": 2.5
}
});
map.addLayer({
"id": "route-hover",
"type": "line",
"source": "streets",
"layout": {},
"paint": {
"line-color": "#f48024",
"line-opacity": 0.9,
"line-width": 2.5
},
"filter": ["==", "rd_name", ""]
});
map.addLayer({
"id" : "street_toggle",
"source": "streets",
"type": "line",
"layout": {"line-join": "round",
"line-cap": "round"},
"paint": {
"line-color": "#FF0000",
"line-opacity": 0.9,
"line-width:": 3.5
}
});
map.on('mousemove', function(e) {
map.featuresAt(e.point, {
radius: 5,
layer: ["m_streets"]
}, function (err, features) {
if (!err && features.length) {
map.setFilter('route-hover', ['==', 'rd_name', features[0].properties.rd_name]);
} else {
map.setFilter('route-hover', ['==', 'rd_name', '']);
}
});
});
map.on('click', function(e) {
map.featuresAt(e.point, {
radius: 5,
layer: ["street_toggle"]
}, function (err, features) {
if (!err && features.length) {
map.setFilter('street_toggle', ['==', 'rd_name', features[0].properties.rd_name]);
} else {
map.setFilter('street_toggle', ['==', 'rd_name', '']);
}
});
});
});
//.addTo(map);
</script>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8' />
<title>HTML markers from geoJSON url</title>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.15.0/mapbox-gl.js'></script>
<link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.15.0/mapbox-gl.css' rel='stylesheet' />
<style>
body {
margin: 0;
padding: 0;
}
#map {
position: absolute;
top: 0;
bottom: 0;
width: 100%;
}
</style>
</head>
<body>
<div id='map'></div>
<script>
mapboxgl.accessToken = 'pk.eyJ1IjoiaXNrYW5kYXJibHVlIiwiYSI6ImNpbHIxMXA3ejAwNWl2Zmx5aXl2MzRhbG4ifQ.qsQjbbm1A71QzVg8OcR7rQ';
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/dark-v8',
center: [37.625224, 55.744537, ],
zoom: 13
});
map.on('style.load', function() {
map.addSource('streets', {
"type": "geojson",
"data": "https://iskandarblue.github.io/mapbox/data/simplify_prototype.geojson"
});
map.addLayer({
"id": "m_streets",
"type": "line",
"source": "streets",
"interactive": true,
"layout": {},
"paint": {
"line-color": "#627BC1",
"line-opacity": 0.0,
"line-width": 2.5
}
});
map.addLayer({
"id": "route-hover",
"type": "line",
"source": "streets",
"layout": {},
"paint": {
"line-color": "#f48024",
"line-opacity": 0.9,
"line-width": 2.5
},
"filter": ["==", "rd_name", ""]
});
map.addLayer({
"id": "street_toggle",
"source": "streets",
"type": "line",
"layout": {
"line-join": "round",
"line-cap": "round"
},
"paint": {
"line-color": "#FF0000",
"line-opacity": 0.9,
"line-width:": 3.5
}
});
map.on('mousemove', function(e) {
map.featuresAt(e.point, {
radius: 5,
layer: ["m_streets"]
}, function(err, features) {
if (!err && features.length) {
map.setFilter('route-hover', ['==', 'rd_name', features[0].properties.rd_name]);
} else {
map.setFilter('route-hover', ['==', 'rd_name', '']);
}
});
});
map.on('click', function(e) {
map.featuresAt(e.point, {
radius: 5,
layer: ["street_toggle"]
}, function(err, features) {
if (!err && features.length) {
map.setFilter('street_toggle', ['==', 'rd_name', features[0].properties.rd_name]);
} else {
map.setFilter('street_toggle', ['==', 'rd_name', '']);
}
});
});
});
//.addTo(map);
</script>
</body>
</html>如果您在运行代码时查看控制台输出，您应该会看到以下错误消息：
layers.street_toggle.paint.line-width:: unknown property "line-width:"
由于此错误，street_toggle层没有添加到地图中，单击交互也不起作用。
要解决此问题，请将"line-width:"键更改为"line-width"（删除引号中的伪冒号）
@Lucas features At（）必须是折旧方法吗？他的冒号确实抛出了一个错误，但这对他选择路段没有帮助，至少在v0.16，对吧？我使用queryRenderedFeatures（）
注意：我真的希望这个方法有一个可选的半径参数-你真的必须精确地点击直线
<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8' />
<title>HTML markers from geoJSON url</title>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.16.0/mapbox-gl.js'></script>
<link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.16.0/mapbox-gl.css' rel='stylesheet'/>
<style>
body { margin:0; padding:0; }
#map { position:absolute; top:0; bottom:0; width:100%; }
</style>
</head>
<body>
<div id='map'></div>
<script>
mapboxgl.accessToken = 'pk.eyJ1IjoiaXNrYW5kYXJibHVlIiwiYSI6ImNpbHIxMXA3ejAwNWl2Zmx5aXl2MzRhbG4ifQ.qsQjbbm1A71QzVg8OcR7rQ';
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/dark-v8',
center: [37.625224, 55.744537,],
zoom: 13
});
map.on('style.load', function () {
map.addSource('streets', {
"type": "geojson",
"data": "https://iskandarblue.github.io/mapbox/data/simplify_prototype.geojson"
});
map.addLayer({
"id": "m_streets",
"type": "line",
"source": "streets",
"interactive": true,
"layout": {},
"paint": {
"line-color": "red",
// "line-opacity": 0.0,
"line-width": 2.5
}
});
map.on('click', function(e) {
var features = map.queryRenderedFeatures(e.point, { layers: ['m_streets'] });
if (!features.length) {
return;
}
if (typeof map.getLayer('selectedRoad') !== "undefined" ){
map.removeLayer('selectedRoad')
map.removeSource('selectedRoad');
}
var feature = features[0];
//I think you could add the vector tile feature to the map, but I'm more familiar with JSON
console.log(feature.toJSON());
map.addSource('selectedRoad', {
"type":"geojson",
"data": feature.toJSON()
});
map.addLayer({
"id": "selectedRoad",
"type": "line",
"source": "selectedRoad",
"layout": {
"line-join": "round",
"line-cap": "round"
},
"paint": {
"line-color": "yellow",
"line-width": 8
}
});
});
});
</script>
</body>
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