Is it possible to display tileLayer on top of all other layers? This means that all other layers are displayed below the tileLayer.
Googled all day, but couldn't find definite yes or no.
Yes you can manipulate the order by simply adding this code:
var topPane = map._createPane('leaflet-top-pane', map.getPanes().mapPane);
topPane.appendChild(yourtileLayer.getContainer());
yourtileLayer.setZIndex(5);
Create a map pane on top of (with a higher z-index than) the standard tile pane, and position your tile layer in it.
There is an entire Lealfet tutorial on the issue.
Related
I'm trying to migrate my app from Bing maps to Azure maps.
I'm adding a few custom pushpins on my map using the SymbolLayer.
When I try to zoom in or out though, my pushpins are getting displaced while my map stays static. What might be the issue?
I suspect the issue is that your anchor point of your icon does not align with the point on the icon image you want. You can adjust this in a couple of ways.
Use the icon options anchor setting. Good for most standard icon images.
Use the icon options offset setting. Good for fine tuning.
For example, if the point on your image that you want to "anchor" to the coordinates on the map is the bottom left corner of the image, you could do the following:
var layer = new atlas.layer.SymbolLayer(datasource, null, {
iconOptions: {
anchor: 'bottom-left'
}
});
Here is a sample to experiment with: https://azuremapscodesamples.azurewebsites.net/?sample=Symbol%20Layer%20Options
Here are the docs on the icon options for a symbol layer: https://learn.microsoft.com/en-us/javascript/api/azure-maps-control/atlas.iconoptions?view=azure-maps-typescript-latest
When should one use a marker instead of a feature layer of points in Mapbox?
Points layers can be updated and styled dynamically using all the styling tools of Mapbox GL JS. Features in points layers can also be clicked, presenting a popup just like with a marker.
Given this, when would one want to use a marker?
As Andrew mentioned there are two sides two this:
Accessibility
Markers are implemented as DOM elements and thus can be included in the tab order and can be given accessibility attributes
Animation
As markers are DOM elements animating them is quite easy with a bit of CSS & JS. You can animate points on a circle layer too, but its much more of a hassle.
Small point count
The number of markers/points you can display at once is somewhat limited by what the DOM can manage. My suggestion is that, if you have more than 500 points to display, you should opt for a circle layer instead of markers (this is a very rough estimates and depends on other parameters as well, animation, point size etc.). Using a circle layer you will hit - depending on the hardware - a limit in the 10s of thounds of points.
Using leaflet mobile maps, you can easily get "lost" if you zoom in too far or pan in the wrong direction, so I'd like to display some kind of dynamic hint arrows(?) around the edge of the map which point to those offscreen markers. Something like the illustration below which I stumbled on here while trying to find a solution.
You would probably be interested in Leaflet EdgeMarker plugin (demo):
[…] allows you to indicate Markers, Circles and CircleMarkers that are outside of the current view by displaying [a chosen icon (like an arrow)] at the edges of the map.
I try to repeat a marker at the same coordinates when I am moving the map to infinity, in the same way that layers.
example : https://www.mapbox.com/mapbox-gl-js/example/geojson-polygon/
Has anyone found how to do that please?
If it's not possible, conversely is it possible to not repeat layers when you moving the map ?
Thank you
The Link example you provided is not using Markers to render the shaded area. It is using a feature, in this case a polygon, included in a layer (a layer can have many features).
In MapBox the rendered map is made up of any number of layers (including the tile data) which is rendered whenever you scroll or drag to a particular area of the map. For example as you keep dragging to the right in the map it will just keep rendering in the relevant layers and tiles.
The Marker functionality has a different purpose which is as a one off selected point which is useful for a user click or hover interaction.
I have a point on the map (a custom pushpin, which does not grow according to the zoom), and I want to have a circumference based on the accuracy of GPS, that will change size according to the zoom. Any idea how to create this circle?
These two articles show how to create shapes on top of a map.
They do a bit more than you need but I'm sure there's more than enough for your needs there.
This post is more focused on drawing shapes on bing maps control.
http://awkwardcoder.blogspot.com/2011/10/drawing-shapes-on-top-of-bing-maps-in.html