CODEWITHSUNDEEP
leaflet
Philipp Gfeller
Philipp Gfeller

Reputation: 1259

Leaflet - change map color

Is it possible to style a leaflet map like this (water: grey; land: yellow;) ? I was not able to find a reference in the docs. http://leafletjs.com/features.html

If yes, is it easy like with google maps or do I have to color the polygons representing land and water somehow?

I'd like to benefit from leaflet's infowindows but I have to style the map like this.

enter image description here

Upvotes: 10

Views: 39034

Answers (2)

FredFury
FredFury

Reputation: 2501

To add to the answer @iH8 gave:

I've used TileMill with TileStache to customise a pretty basic world map and it looked great. It was really easy to work with. It also supports the use of shape files- if you are so inclined.

TileMill example

Here is the .mss you can start to fidget around with to get close to the colour scheme you want:

Map {
  background-color: #e0e0e0;
}

#countries {
  ::outline {
    line-color: #000000;
    line-width: 2;
    line-join: round;
  }
  polygon-fill: #ffce0c;
}

After making your beautiful map you can generate the MBtiles and serve it with TileStache.

Here is a tut on using TileStache. Hope that helps!

Upvotes: 4

iH8
iH8

Reputation: 28638

The easiest way would be do this by adding them as Polygons by Leaflet's L.GeoJSON. First you would need to find a proper dataset of the world's boundaries. I found one here: https://github.com/johan/world.geo.json Save the world.geo.json file so you can use it one your own server. Now initialize a simple map:

var map = L.map('map', {
    'center': [0, 0],
    'zoom': 0,
    'layers': [
        L.tileLayer('http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
            'attribution': 'Map data © OpenStreetMap contributors'
        })
    ]
});

Fetch the GeoJSON file using your favorite XHR library (i'm using jQuery in this example) and then use the data to initialize a GeoJSON layer, and do some styling:

$.getJSON('world.geo.json', function (geojson) { // load file
    L.geoJson(geojson, { // initialize layer with data
        style: function (feature) { // Style option
            return {
                'weight': 1,
                'color': 'black',
                'fillColor': 'yellow'
            }
        }
    }).addTo(map); // Add layer to map
});

That's it, can't make it any simpler. Here's a working example on Plunker:

http://plnkr.co/edit/UGQ9xt?p=preview

(note that i load the GeoJSON file directly via Gitraw/Github, but you're not supposed to do that in a production site)

And here's the reference for L.GeoJSON:

http://leafletjs.com/reference.html#geojson

Edit: Other options are more complicated but do not have some of the drawbacks you mentioned in the comments, here are the best i can think of:

Using a combination of Leaflet and the awesome D3 library by Mike Bostock. Here's a quick example: http://bost.ocks.org/mike/leaflet/ It doesn't suffer from the redraw on pan but it's harder to grasp.

Another solution is using Mapbox They have a tool called TileMill which allows you to generate your own tilesets. That would be the perfect solution, it wouldn't have any of the mentioned drawbacks and you can style almost everything. Only drawback is that you'll need to host to tiles yourself.

Upvotes: 12

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