I have a map with two custom marker icons. One is a starting point and the other is the destination.
I can add a route between the two points but it adds A and B letters to the end.
Can I tell the marker plugin to not render the AB letters?
If not then what do I need to do to build the path between the two customer icons?
The code below maps the two points but includes the AB endpoints. Is there an option to exclude the endpoints?
dir = MQ.routing.directions();
dir.route({
locations: [
{ latLng: { lat: startlat, lng: startlong} },
{ latLng: { lat:endlat , lng: endlong } }
]
});
map.addLayer(MQ.routing.routeLayer({
directions: dir,
draggable: false,
fitBounds: true
}));
you could use CSS to hide the markers. For example if the marker icon URL included text=A you could use;
#dragMapWindow img[src*="text=A"] {
visibility:hidden;
}
the above tests out ok on the drag route example # http://mapquestapi.com/directions
Related
I'm working with Mapbox GL JS to plot geoJSON data on a map using their external geoJSON example as a starting point. The geoJSON file contains lots of features which are plotted as individual markers on the same layer. I would like to highlight the clicked marker by changing its colour from red to blue. I have adapted the example to show a pop-up with the point id when clicked (just as a proof of concept that the markers can fire events when clicked), however, I'm struggling to find a way to change the styling of the individual clicked marker.
The code is currently as follows:
mapboxgl.accessToken = 'pk.eyJ1IjoiZGFuYnJhbWFsbCIsImEiOiJjbDB3ODFveHYxOG5rM2pubWpwZ2R1Y2xuIn0.yatzJHqBTjQ6F3DHASlriw';
const map = new mapboxgl.Map({
container: 'map', // container ID
style: 'mapbox://styles/mapbox/satellite-v9', // style URL
zoom: 7, // starting zoom
center: [138.043, 35.201] // starting center
});
map.on('load', () => {
map.addSource('earthquakes', {
type: 'geojson',
data: 'https://docs.mapbox.com/mapbox-gl-js/assets/earthquakes.geojson'
});
map.addLayer({
'id': 'earthquakes-layer',
'type': 'circle',
'source': 'earthquakes',
'paint': {
'circle-radius': 8,
'circle-stroke-width': 2,
'circle-color': 'red',
'circle-stroke-color': 'white'
}
});
});
map.on('click', 'earthquakes-layer', (e) => {
new mapboxgl.Popup()
.setLngLat(e.lngLat)
.setHTML('Id: ' + e.features[0].properties.id)
.addTo(map);
});
Here is a codepen: https://codepen.io/danb1/pen/BaYjOyx
Is it the case that it's actually not possible to use this approach, and instead each feature from the geoJSON file needs to be plotted as a separate layer? I'm struggling to find any examples of this and am not able to modify the geoJSON source — it has to come from one single file (rather than loading multiple geoJSON files separately on separate layers).
This is possible using feature-state. The first thing to do is to ensure the layer data contains ids for each feature (in the example the source data doesn't so we need to add generateId: true to the map.addSource method).
We then need to add mousemove and mouseleave events to the map to store the moused-over feature id (if there is one, i.e. if the mouse is hovering over a feature):
let hoveredEarthquakeId = null;
map.on('mousemove', 'earthquakes-layer', (e) => {
map.getCanvas().style.cursor = 'pointer';
if (e.features.length > 0) {
map.setFeatureState(
{ source: 'earthquakes', id: e.features[0].id },
{ hover: true }
);
hoveredEarthquakeId = e.features[0].id;
}
});
map.on('mouseleave', 'earthquakes-layer', () => {
map.getCanvas().style.cursor = '';
if (hoveredEarthquakeId !== null) {
map.setFeatureState(
{ source: 'earthquakes', id: hoveredEarthquakeId },
{ hover: false }
);
}
hoveredEarthquakeId = null;
});
Finally, in the layer properties, the colour setting of the circle needs to be updated to reflect the hover value stored against the feature:
'circle-color': [
'case',
['boolean', ['feature-state', 'hover'], false],
'#00f',
'#f00'
],
The final thing can be seen in the modified pen. There is also a MapBox tutorial covering this kind of thing in a slightly more complicated way, which I hadn't come across until now: https://docs.mapbox.com/help/tutorials/create-interactive-hover-effects-with-mapbox-gl-js/.
I generated a list of Maki Icons I want to use via the original icon editor.
drawMarkers() {
let self = this;
const mapboxgl = require("mapbox-gl");
let data = this.draw.getAll();
data.features.forEach((feature) => {
if (feature.geometry.type == "Point") {
var icon = feature.properties.icon;
var title = feature.properties.title;
if (typeof title === "undefined") {
title = "Info";
} else {
var popup = new mapboxgl.Popup({ offset: 25 }) // add popups
.setHTML(`<h3>${title}</h3>`);
var marker = new mapboxgl.Marker({
color: '#333',
draggable: false,
scale: 1,
})
.setLngLat(feature.geometry.coordinates)
.setPopup(popup)
.addTo(self.map);
}
});
The Markers are showed correctly on the Mapbox.
The GeoJSON is like this:
"type":"FeatureCollection",
"features":[
{
"id":"c749de6a6eac6b1cfdda890e7c665e0d",
"type":"Feature",
"properties":{
"icon":"ferry",
"title":"This should show a Ferry icon",
"portColor":"#d9eb37"
},
"geometry":{
"coordinates":[
6.12,
22.44
],
"type":"Point"
}
},
I want the Maki Icons also added in the Marker, but I cannot find any documentation of how icons can be used inside the Mapbox Marker.
Who can help me out? I'm using the Mapbox GL JS for Web.
It depends on how you've created your map. You can either:
Create your own map style using the Maki icons you've generated. This is done using the Mapbox studio to create your custom map style, then adding it to your application.
Create custom markers that use the maki .svg files you've created. This can be done by passing a custom element to the new mapboxgl.Marker() function. So, instead of:
var marker = new mapboxgl.Marker({
color: '#333',
draggable: false,
scale: 1,
})
you would pass:
var marker = new mapboxgl.Marker(customElement)
where customElement uses the data from your icons variable.
I'm not sure if you're using plain JS here, but there's some examples on the mapbox docs of ways you can do this.
Because you've generated your own list of Maki icons, I'd suggest downloading them and maybe host them somewhere so that you can get away with creating your markers with <img src="link to hosted maki marker"/> or something of the sort
Just a quick question, if anyone has ever replaced the Mapbox default marker with a Maki icon. I've only seen examples of using Maki icons for point tilesets/layers, but I'm wanting to use it for non-tileset features, specifically replacing the marker that adds after geocoding, at the location of the address just geocoded.
Or, trying to find something that is similar to Google Maps symbols below. Any suggestions appreciated.
var pinImage = {
path: google.maps.SymbolPath.CIRCLE,
fillColor: '#ff4b00',
fillOpacity: .9,
scale: 5,
strokeColor: '#CDDC39',
strokeWeight: 0,
strokeOpacity: .5
}
The MapboxGeocoder control has a marker option https://github.com/mapbox/mapbox-gl-geocoder/blob/master/API.md#parameters which controls the marker placed on the map when you select a result.
There is an example at https://docs.mapbox.com/mapbox-gl-js/example/custom-marker-icons/ to create a Marker with a custom icon.
So you could create an HTML Element which contains either an SVG or PNG icon from Maki and use that as your element in your custom Marker passed to the MapboxGeocoder control.
I think this sample is what you are looking for Use a custom render function with a geocoder
It allows you to add a custom render function including the icon...
var geocoder = new MapboxGeocoder({
accessToken: mapboxgl.accessToken,
types: 'poi',
// see https://docs.mapbox.com/api/search/#geocoding-response-object for information about the schema of each response feature
render: function(item) {
// extract the item's maki icon or use a default
var maki = item.properties.maki || 'marker';
return (
"<div class='geocoder-dropdown-item'><img class='geocoder-dropdown-icon' src='https://unpkg.com/#mapbox/maki#6.1.0/icons/" +
maki +
"-15.svg'><span class='geocoder-dropdown-text'>" +
item.text +
'</span></div>'
);
},
mapboxgl: mapboxgl
});
map.addControl(geocoder);
I am exporting Google Directions routes as KML and displaying them on a Mapbox map by reading them with Omnivore and adding them to the map,
The Google KML stores each route as two Places (the start and end points) and one LineString (the route). In Mapbox I would like to show only the routes, that is to filter out the markers somehow. I'm displaying markers out of my own database and the Google markers clutter it up.
Here is my code. I change the styling of the LineStrings just to show that I can, but do not know what magic call(s) to make to not display the Points.
Thanks.
runLayer = omnivore.kml('data/xxxx.kml')
.on('ready', function() {
var llBnds = runLayer.getBounds();
map.fitBounds(llBnds);
this.eachLayer(function (layer) {
if (layer.feature.geometry.type == 'LineString') {
layer.setStyle({
color: '#4E3508',
weight: 4
});
}
if (layer.feature.geometry.type == 'Point') {
//
// Do something useful here to not display these items!!
//
}
});
})
.addTo(map);
Welcome to SO!
Many possible solutions:
Most straight forward from the code you provided, just use the removeLayer method on your runLayer Layer Group when you get a 'Point' feature.
Cleaner solution would be to filter out those features before they are even converted into Leaflet layers, through a custom GeoJSON Layer Group passed as 3rd argument of omnivore.kml, with a specified filter option:
var customLayer = L.geoJSON(null, {
filter: function(geoJsonFeature) {
// my custom filter function: do not display Point type features.
return geoJsonFeature.geometry.type !== 'Point';
}
}).addTo(map);
var runLayer = omnivore.kml('data/xxxx.kml', null, customLayer);
You can also use the style and/or onEachFeature options on customLayer to directly apply your desired style on your LineString.
I load some lat / lon info, then use it to build a polyline.
I then want to add a marker at each of the polyline vertices that will show when the polyline is clicked.
The vertices should disappear if a different (or the same) polyline is clicked.
The code below creates the polyline and the vertex markers.
But the vertex markers do not ever disappear.
I've tried to do this several ways with the same result. I've tried storing the vertex markers in an array and adding them directly to the map, then map.removeLayer'ing them. That doesn't work either. Nor does it work if I use an L.featureGroup instead of a layerGroup.
Clearly I've missed the point somewhere as to how markers can be removed. Could someone point me at the error in my methodology?
// trackMarkersVisible is a global L.layerGroup
// success is a callback from an ajax that fetches trackData, an array f lat/lon pairs
success: function (trackData) {
// build an array of latLng's
points = buildTrackPointSet(trackData, marker.deviceID);
var newTrack = L.polyline(
points, {
color: colors[colorIndex],
weight: 6,
clickable: true
}
);
$(newTrack).on("click", function () {
trackMarkersVisible.clearLayers();
$.each(points, function(idx, val) {
var tm = new L.Marker(val);
trackMarkersVisible.addLayer(tm);
});
map.addLayer(trackMarkersVisible);
});
}
Without a JSFiddle or Plunker it's hard to say because i'm not sure what behaviour your getting but using the clearLayers() method of L.LayerGroup should remove all layers from that group. I would check in the onclick handler if the group already has layers: group.getLayers().length === 0 If the group is empty, add the markers, if the group has layers use clearLayers. Example in code:
polyline.on('click', function (e) {
if (group.getLayers().length === 0) {
e.target._latlngs.forEach(function (latlng) {
group.addLayer(L.marker(latlng));
});
} else {
group.clearLayers();
}
});
This works for me, see the example on Plunker: http://plnkr.co/edit/7IPHrO?p=preview
FYI: an instance of L.Polyline is always clickable by default so you can leave out the clickable: true