I am getting started on mapbox studio. I want to be able to change the background image based on the zoom level - so far default way to set image is:
Map {
background-color: #land;
background-image:url(pattern/3.png)
}
I have tried adding zoom level conditions as follow.
Map {
background-color: #land;
[zoom>=5] {background-image:url(pattern/2.jpg);}
[zoom<=5] { background-image:url(pattern/3.png);}
}
appreciate if you can share any tips or point to resource and methods I can read.
Cheers :)
Properties in the Map object are global properties that cannot be filtered or changed by zoom level. In order to have different backgrounds at different zoom levels you will need to create a custom polygon layer to act as your background, but with more flexible styling. You would use polygon-pattern-file on this layer instead of background-image.
See the source quickstart tutorial for info about creating a custom source layer and adding it to your style project. You can use the 'bounding box' file from Natural Earth for this; it is a single polygon that covers the entire map.
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
A client would like to add their URL as a brand/watermark within a MapBox tiled vector layer in MapBox Studio, so that the watermark appears wherever the tiled vector layer is displayed. (One possible use-case is to discourage competitors from stealing that tiled layer in their own maps.)
Is it possible to add a watermark to a tiled layer in MapBox, and ensure that it's visible at least once in every view?
I tried adding a duplicate copy of a polyline dataset as a Symbol Layer, and labelling it with the client's URL using the Text Field option. This works but has the side effect of preventing the labels from appearing on the original copy of the line layer.
It is not possible to add a single occurrence of a watermark to a map style in Studio in the way that the Mapbox watermark is displayed on a map, but there are alternative approaches to achieve what you are looking to do.
If the underlying goal is to prevent competitors from using a particular map style (and hence an underlying tiled layer), the best approach is to set scopes and URL restrictions on the Mapbox access tokens being used to access the map style in a public environment. You can find more useful information about token management and access tokens in general in the Mapbox documentation. This approach could be used in conjunction with adding a branded "watermark" on the client side -- for example, placing a fixed div in the corner of a web map loaded with GL JS. Although this watermark obviously isn't included in the style itself, setting a URL restriction on the access token used to load the map would prevent others from accessing the same map with that token on other domains.
You could also experiment with adding a low-opacity background-pattern to relevant layers in the map style itself. This property could be used to mimic a traditional watermarked effect, where a particular logo is placed on an image at multiple regular intervals.
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.
I'm starting research to add a user feature to an existing map built in Mapbox GL JS (wrapped in an Angular 2+ application). What I need to do, is allow a user to be able to draw and rotate ellipses and text labels over the top of a map, and be able to save screen captures of the result.
I'm coming into this with no experience in Mapbox or Leaflet, so I have a lot to figure out. My first goal is to determine if I can do this in Mapbox directly (with a plugin?), of if I will need to render a canvas over the top of my map with some third-part drawing library (I have a lot of experience with those).
The obvious advantage to doing this in Mapbox directly would be that we might still be able zoom and pan.
The Mapbox-gl-draw library lets the user author features in a map, but probably not to the extent you need.
If the features the user creates don't need to live "in map space" (ie, the map is static, and the labels are statically positioned over the top, for printing), working directly on a canvas will give you much more flexibility. You'll also have access to a much wider variety of libraries.
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.