I'm using Mapbox GL JS, with a Mapbox Streets base layer. I have added a polygon layer with white borders and a transparent fill, but I'm finding it hard to read the basemap labels underneath the polygon layer. See how the labels are covered by the white borders:
Is there any way I can make sure the labels are on top of the polygon layer, or at least not obscured by it?
My code looks like this:
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/streets-v9',
center: [-2.839, 54.579],
zoom: 4
});
map.on('load', function () {
map.addSource('constituencies', {
'type': 'vector',
'url': 'mapbox://pcsu.xxx'
});
var constituencyLayer = map.addLayer({
'id': 'constituencies',
'source': 'constituencies',
'source-layer': 'constituencies',
'type': 'fill',
'paint': {
'fill-color': 'rgba(162,181,205,0.6)',
'fill-outline-color': 'white'
},
'layout': {
'visibility': 'visible'
}
});
Have a look at this Mapbox example and use the second argument of map.addLayer(layer, [before]). If this layer before exists, the new layer will be placed before/below it. I think the argument naming is a bit confusing here.
The name of the lowest label layer depends on the style. Most of the time you're looking for housenum-label. There's also a discussion in the Mapbox github issues how to ease this process, e.g by introducing placeholder layers.
Related
I am a confused about how to access layers in Mapbox from leaflet. I have this;
$( document ).ready(function() {
var map = L.map('map').setView([33.72890830547334, 133.4454345703125], 7);
var osmmapbox = L.tileLayer('https://api.mapbox.com/styles/v1/usernamexxx/cl6om2qj0003214odo9xx676f/tiles/256/{z}/{x}/{y}#2x?access_token=[snip]', {
maxZoom: 19,
attribution: '© OpenStreetMap contributors'
}).addTo(map);;
console.log(osmmapbox);
});
My mapbox styled map has 2 layers, one of nodes and another of ways. I tried to look into osmmapbox but I cannot see anything. Any pointers appreciated.
If you are using Mapbox.js, then you can't. It only supports displaying raster tiles, not interacting with the data inside vector tiles.
Use Mapbox GL JS if you want to query map data.
I think my problem was more about conceptualization of how mapbox processes info. What I did was upload my data to a dataset. I then create a tileset from the dataset. I created a style but did not include the data in the style but used mapbox gl js to add a geojson with two type of geometries. This is the final mapbox gl js code;
myToken = '[snip];
mapboxgl.accessToken = myToken;
// add a styled map to the container id map
const map = new mapboxgl.Map({
container: 'map', // container ID
style: 'mapbox://[some style link here]',
});
map.on('load', () => {
map.addSource('data-source', {
type: 'vector',
// Use any Mapbox-hosted tileset using its tileset id.
// Learn more about where to find a tileset id:
// https://docs.mapbox.com/help/glossary/tileset-id/
url: 'mapbox://[tileset link goes here]'
});
map.addLayer({
'id': 'area-polygon',
'type': 'line',
'source': 'data-source',
'source-layer': 'bicycle_data',
'filter': ['==', '$type', 'Polygon']
});
map.addLayer({
'id': 'bicycle-parking',
'type': 'circle',
'source': 'data-source',
'source-layer': 'bicycle_data',
'filter': ['==', '$type', 'Point']
});
});
I am using one of the custom tileset of tilling service in mapbox. I loaded that custom tile layer in map using below code.
map.addSource('california', {
type: 'vector',
url: 'mapbox://xyz.california'
});
map.addLayer({
'id': 'terrain-data',
'type': 'fill',
'source': 'california',
'source-layer': 'california',
'layout': {},
'paint': {
'fill-color': 'black',
'fill-opacity': 0.5
}
});
Above code is filling out the inner area with black color. But I want to fill out the outer area of that polygon. Only one way I know to do that is getting difference of whole map with that polygon by using turf.js. After that I will be able to fill the outside area.
Now the question is how can I get the geojson ploygon array of above added layer? So I can calculate the difference.
You can't easily get the complete geometry of a polygon from a vector tile set, because it has already been cut up into tiles. You would have to either find a way to merge them together, or get your geometry into the front end as a complete geojson first.
I have published a shapefile as a vector tile on GeoServer according to this. Now, how can I add this layer to Mapbox?
I would be very pleased if you can help me.
I have been trying to get that to work and for a vector layer you must specify 'source-layer' attribute which is the name of a layer on your GeoServer (ie. 'states' if using topp workspace) here is a code example that eventually worked for me:
<script>
mapboxgl.accessToken =
'<YOUR MAPBOX TOKEN HERE>';
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/streets-v11',
center: [-100, 40],
zoom: 12,
});
map.on('load', function () {
map.addSource('wms-test-source', {
type: 'vector',
// use the tiles option to specify a WMS tile source URL
// https://docs.mapbox.com/mapbox-gl-js/style-spec/sources/
tiles: [
'http://<YOUR GEOSERVER ADDRESS>:8080/geoserver/gwc/service/wmts?REQUEST=GetTile&SERVICE=WMTS&VERSION=1.0.0&LAYER=topp:states&STYLE=&TILEMATRIX=EPSG:900913:{z}&TILEMATRIXSET=EPSG:900913&FORMAT=application/vnd.mapbox-vector-tile&TILECOL={x}&TILEROW={y}',
],
'minZoom': 0,
'maxZoom': 14,
});
map.addLayer(
{
'id': 'wms-test-layer',
'type': 'fill',
'source': 'wms-test-source',
'source-layer': 'states',
'paint': { 'fill-color': '#00ffff' },
}
//'aeroway-line'
);
});
</script>
For more info go to GeoServer documentation at GeoServer - Mapbox Style Specification
The code provided at the link actually shows how to add the GeoServer layer to your Mapbox map. Assuming that you want to add the layer to your map with Mapbox GL JS (since your post is tagged with mapbox-gl-js, your code would look something like this:
mapboxgl.accessToken = /* YOUR MAPBOX ACCESS TOKEN HERE */;;
var map = new mapboxgl.Map({
container: 'map', // container id
style: 'mapbox://styles/mapbox/streets-v11', // stylesheet location
center: [-74.5, 40], // starting position [lng, lat]
zoom: 9 // starting zoom
});
// Add the GeoServer layers as a source to your map.
map.addSource(
"<source-name>": {
"type": "vector",
"tiles": [
"http://localhost:8080/geoserver/gwc/service/wmts?REQUEST=GetTile&SERVICE=WMTS
&VERSION=1.0.0&LAYER=<workspace>:<layer>&STYLE=&TILEMATRIX=EPSG:900913:{z}
&TILEMATRIXSET=EPSG:900913&FORMAT=application/vnd.mapbox-vector-tile
&TILECOL={x}&TILEROW={y}"
],
"minZoom": 0,
"maxZoom": 14
}
);
// Style the GeoServer source in order to display it visually on your map
map.addLayer({
'id': 'geoserver-layer',
'type': /* fill in based on options here: https://docs.mapbox.com/mapbox-gl-js/style-spec/layers/#type */,
'source': '<source-name>'
/* Add any additional properties, full details here: https://docs.mapbox.com/mapbox-gl-js/style-spec/layers/#type */
});
In short, the GeoServer documentation link provides the code for adding a source to your map, and then you should add a layer to style the source visually on your map.
I'd recommend taking a look at the many Mapbox GL JS examples to get a sense of how sources and layers can be added, styled, modified, etc.
I have a map with several layers of GeoJSON each with their own unique layer name:
var map = new mapboxgl.Map({
container: 'map',
center: [-97.5651505, 37.89549,],
zoom: 4
});
var sources = {
'ord': 'chicago',
'pit': 'pittsburgh',
'atl': 'atlanta'
};
map.on('load', function () {
for (var s in sources) {
map.addSource(s, { type: 'geojson', data: `/geojson/${s}.json` });
map.addLayer({
'id': sources[s],
'type': 'fill',
'source': s,
'layout': {
'visibility': 'visible'
},
'paint': {
'fill-color': '#088',
'fill-opacity': 0.5
}
});
}
});
I would like to check if a user has zoomed in past zoom level 13 evaluate if any of these three layers is in the viewport. If it is I'll take action to add a button to the overlay. However, I'm having issues finding any documentation other than leaflet on how to check if a layer is inside the viewport. I've found some mention of markers that that doesn't seem to apply.
You can achieve this with queryRenderedFeatures which returns an array of features rendered within a given bounding box. However, if you omit the bounding box argument, queryRenderedFeatures will query within the entire viewport. You can also use the options.layers argument to limit your query to specific layers to avoid getting a bunch of features that are in the underlying style (for example, streets and lakes). You can do this query in a zoomend event listener to achieve your desired outcome. Putting it all together would look something like this:
map.on('zoomend', () => {
if (map.getZoom() > 13) {
const visibleFeatures = map.queryRenderedFeatures(null, {layers: ['ord', 'pit', 'atl']});
// if none of the layers are visible, visibleFeatures will be an empty array
if (visibleFeatures.length) {
// figure out which layers are showing and add your button
}
}
});
I am a beginner to GIS and PostGIS applications.
I am trying to display the polygon on mapbox map but unable to do so.
Following is the javascript code:
mapboxgl.accessToken = 'TOKEN';
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/streets-v9',
center: [115.813867, -31.932177],
zoom: 12
});
map.on('load', function () {
map.addLayer({
'id': 'maine',
'type': 'fill',
'source': {
'type': 'geojson',
'data':threeHouses
},
'layout': {},
'paint': {
'fill-color': '#088',
'fill-opacity': 0.8
}
});
});
Here is my JSFiddle.
There are a couple issues with the JS Fiddle you've shared.
You haven't included mapbox-gl.js & mapbox-gl.css as resources, so they are not being properly referenced.
You are not declaring your data variable correctly (it should be let threeHouses = or var threeHouses =)
You're also initializing your map with a completely different lat/lon than those that are included in your polygon data
If you address all three of these, you'll have a better chance of understanding whether or not there's a problem.