I am able to display contents of clustered markes but could not display the contents of a single marker.
Please find the below code, where else statement will handle the single marker.
map.eachLayer(function(marker) {
if (marker.getChildCount) { // to get cluster marker details
console.log('cluster length ' + marker.getAllChildMarkers().length);
} else {
// how to display the contents of a single marker ??
alert(marker.options.title); // doesn't work
}
Thanks.
Remember that map.eachLayer() works on every layer of the map. This includes popups and the map tile layer, as well as markers and clusters of markers. Not all these types of layers will have the same options as markers or clusters. You will need to test to check whether each layer is a Marker, a cluster, or something else. Also, remember that markers may not necessarily have a title set.
This works for me:
map.eachLayer(function(layer) {
if(layer.options && layer.options.pane === "markerPane") {
alert("Marker [" + layer.options.title + "]");
}
});
Related
I am trying to make moving cars on MapBox using new promising GL Symbol layer/source. It looks very nice both on android and ios, but I faced with two impossibilities.
Symbols are always clustering. setIconAllowOverlap() and setIconIgnorePlacement() don't help: on some zoom it WILL be clustered. On both platforms.
How can I disable symbols clustering completely?
UPDATE: the code and even fast solution! (possibly bug? see comment at withTextField)
in onStyleLoaded():
...
carManager = new SymbolManager(mapView, mapboxMap, style);
carManager.setIconAllowOverlap(true);//doesn't help
carManager.setIconIgnorePlacement(true);//doesn't help
...
in drawCarFunction():
...
SymbolOptions carOptions = new SymbolOptions()
.withLatLng(latLng)
.withIconImage(carPlate)
//.withTextField(carPlate) //!!!! here it will cluster if text exists, and will NOT - without any text
;
Symbol car= carManager.create(carOptions);
carSymbols.add(car);
...
Next question:
On Android we have symbolManager.addClickListener() , but how could I catch a click on iOS? I know I can catch the tap, calculate nearest marker etc but
How to get symbol click simpler in swift?
In Moving cars task I should enumerate existing cars, move running, add newest. Where should I store cars IDs to get it later on next move? Where are no even symbol.setTag() option... Storing IDs in snippet (as on GMaps) is not that choice I expected from MapBox. Sure, I can make an array of pairs "car ID = symbol ID", but
How to store my own UID in the symbol?
UPDATE: the code. Note the comment near getTag()
void moveExistingCarOrAddNew(int carId, LatLng newLocation){
for (int i = 0; i < carManager.getAnnotations().size(); i++) {
if (carManager.getAnnotations().get(i).getTag()==carId){ //but no getTag() here, I should fit data into text fields
car.setLatLng(newLocation); //move!
} else {
...//create new marker as shown above }
}
}
}
Using Leaflet javascript. I would like my "clear button" to do two things...
1) uncheck all the L.Control layers
2) remove the current overlay from the map
I can do the first easily enough using this code:
var checks = document.querySelectorAll('[type = "checkbox"]'), i;
function uncheckBoxes() {
for (i = 0; i < checks.length; ++i) {
checks[i].checked = false;
}
}
The next is a little more tricky. I have tried using the removeLayer() and clearLayers() function but they do not work. I don't see a way in the leaflet documentation to remove an L.control overlayMap layer from the map unless you physically uncheck it yourself.
Any insight into this would be greatly appreciated.
Not exactly sure what is your difficulty in programmatically removing some layers / overlays from your map.
It is normally trivial (map.removeLayer(layer)), and the Layers Control automatically reflects what is happening on the map (in that case, if layer is one of the overlays, its associated checkbox will become unticked).
As for removing all your overlays from map, you just need to keep a reference to those overlays, loop through them and remove them from the map:
var overlays = {
'Name 1': someLayer,
'Name 2': someOtherLayer
};
L.control.layers(null, overlays).addTo(map);
// Whenever you want to remove all overlays:
for (var name in overlays) {
map.removeLayer(overlays[name]);
}
Demo: https://jsfiddle.net/3v7hd2vx/357/
Another developer created our original map but I'm tasked with making some changes. One of these is making sure the activated marker is brought to the front when clicked on (where it is partially overlapped by other markers).
The developers have used mapbox 2.2.2.
I have looked at leafletjs's docs, have followed some instructions on other posted solutions (e.g. solution one and solution two). Neither of these makes any difference.
Examining the marker in Chrome's console I can see the value of options.zIndexOffset is being set (10000 in my test case). I've even set _zIndex to an artificially high value and can see that reflected in the marker's data structure. But visually nothing is changing.
This is how the map is set up initially. All features are from a single geojson feed:
L.mapbox.accessToken = '<access token here>';
var map = L.mapbox.map('map', 'map.id', {
}).setView([37.8, -96], 3);
var jsonFeed, jsonFeedURL;
var featureLayer = L.mapbox.featureLayer()
.addTo(map)
.setFilter(function (f) {
return false;
});
$.getJSON(jsonFeedURL, function (json) {
jsonFeed = json;
jsonFeedOld = json;
// Load all the map features from our json file
featureLayer.setGeoJSON(jsonFeed);
}).done(function(e) {
// Once the json feed has loaded via AJAX, check to see if
// we should show a default view
mapControl.activateInitialItem();
});
Below is a snippet of how I had tried setting values to change the z-index. When a visual marker on the featureLayer is clicked, 'activateMarker' is called:
featureLayer.on('click', function (e) {
mapControl.activateMarker(e);
});
The GEOjson feed has urls for the icons to show, and the active marker icon is switched to an alternative version (which is also larger). When the active feature is a single Point I've tried to set values for the marker (lines commented out, some of the various things I've tried!)
activateMarker: function (e) {
var marker = e.layer;
var feature = e.layer.feature;
this.resetMarkers();
if (feature.properties.hasOwnProperty('icon')) {
feature.properties.icon['oldIcon'] = feature.properties.icon['iconUrl'];
feature.properties.icon['iconUrl'] = feature.properties.icon['iconActive'];
feature.properties.icon['oldIconSize'] = feature.properties.icon['iconSize'];
feature.properties.icon['iconSize'] = feature.properties.icon['iconSizeActive'];
}
if (feature.geometry.type == 'Point') {
marker.setZIndexOffset(10001);
marker.addTo(featureLayer);
}
//featureLayer.setGeoJSON(jsonFeed);
}
Any advice would be greatly appreciated! I'm at the point where I don't know what else to try (and that's saying something).
What probably happens is that you just flush your markers with the last call to .setGeoJSON():
If the layer already has features, they are replaced with the new features.
You correctly adjust the GeoJSON data related to your icon, so that when re-created, your featureLayer can use the new values to show a new icon (depending on how you configured featureLayer).
But anything you changed directly on the marker is lost, as the marker is removed and replaced by a new one, re-built from the GeoJSON data.
The "cleanest" way would probably be to avoid re-creating all features at every click.
Another way could be to also change something else in your GeoJSON data that tells featureLayer to build your new marker (through the pointToLayer option) with a different zIndexOffset option.
I'm building an online version of a boardgame using Leaflet as the viewport.
My source: https://github.com/edenLOL/gotta-chug-em-all/tree/master
What I'm trying to achieve, is a way to spiderfy/spread out markers that land on the same square as each other, including when they move past each other.
I'm using https://github.com/jawj/OverlappingMarkerSpiderfier-Leaflet to Spiderfy the markers, which appears to work when clicking the markers.
However, I need these markers to be spiderfied always, without requiring a click event. So I set keepSpiderfied: true for the spiderfier object (oms).
var options = { //**spiderfier
keepSpiderfied: true,
nearbyDistance: 120
};
oms = new OverlappingMarkerSpiderfier(map, options); //**spiderfier
But this doesn't work. I can't seem to load the markers in a spiderfied state, it always requires a click to spiderfy them.
For context, markers are generated dynamically during a prompt before the user sees the map.
('#playerIcons > table > tbody > tr > td').on('click', function(){
pokemonSelected = $(this).attr('class');
if ( !$(this).hasClass('pokemonSelected') ){
playerArray[pokeCounter].pokemon = ''+ pokemonSelected +'';
playerArray[pokeCounter].marker = L.marker([playerArray[pokeCounter].coords[0], playerArray[pokeCounter].coords[1]], {
icon: window[pokemonSelected]
}).addTo(map);
oms.addMarker(playerArray[pokeCounter].marker) //**spiderfier
pokeCounter += 1;
} else {
return false;
};
});
I've also tried using Leaflet/Leaflet.markercluster. This works to an extent, and spiderfies the Markers at defined zoom levels, however the markers don't move, and stay stacked on top of each other.
What am I missing here that could be causing these issues? I don't mind using either Spiderfier or MarkerCluster, as both should be able to provide the solution I'm looking for once either issue is fixed.
Spiderfier: Markers need to spiderfy automatically
MarkerCluster: Markers don't physically move when spiderfying out of cluster
Note: If you decide to open index.html, be aware the Pokemon theme song will autoplay in the background on page load (until the map is drawn), so check your volume :)
I solve the problem like this, using fire('click') аfrom leaflet.
scope.spiderMarker - the marker, i want to spidrefy. In your case i think its playerArray[pokeCounter].marker
try{
scope.spiderMarker.fire('click')}
catch (e) {
console.log(e);
};
I am passing a latlng from a link on another page to my map. My map has the markers based on this latlng. So what I am passing is exactly what the map markers are using to show on the map.
var hash = window.location.hash;
var hashless = hash.replace("#", "");
var ll = hashless.split(",", 2);
map.setView(new L.LatLng(ll[0], ll[1]), 14);
This is working great, but I am struggling at getting the marker to show it's infowindow. I would like only the link clicked on to be the marker that is showing it's popup. I am able to zoom right to the marker, but not able to get the popup to work in a reasonable way.
I have tried a few things, but map.getBounds() seems to be the one I should be working with, unless you can ID a marker based on Lat/Lng. Can you?
I am using bounds in the map.on function.... but none of the events seems to really work well. Originally thought LOAD would do it, but no results... viewreset, mousemove, etc... all show the popup in this simple function, but it is not really any good as it flickers etc... when moving things around:
map.on('viewreset', function () {
// Construct an empty list to fill with onscreen markers.
console.log("YA");
var inBounds = [], bounds = map.getBounds();
datalayer.eachLayer(function (marker) {
if (bounds.contains(marker.getLatLng())) {
inBounds.push(marker.options.title);
marker.openPopup();
}
});
});
How can I set the marker.openPopup() from my link to the current marker at that lat/lng passed to it?