[GIS] How to setup leaflet map to display a WMS layer in ESRI:102012 projection

coordinate systemleafletprojwms

I have a WMS server that serves layers in ESRI:102012 projection.
http://spatialreference.org/ref/esri/102012/
It accepts GetMap requests with srs=EPSG:102012 parameter.

My goal is to display a map in this projection with some WMS layers on it.

I'm using a proj4leaflet plugin (https://github.com/kartena/Proj4Leaflet) to setup a map for this projection, but I'm stuck with defining L.Transformation, scale and resolution parameters.
Can anybody tell me what to put in those parameters, or give a working example of leaflet map in this projection?

Best Answer

leaflet has proj4 support

you should take a look at this [1] and here is a small example [2]

Hope this helps

[1] https://github.com/kartena/Proj4Leaflet/

[2] https://github.com/kartena/Proj4Leaflet/blob/master/examples/index.html

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Leaflet WMS Integration – Combining Leaflet with Geoserver WMS Map

Take a look at L.tilelayer.wms in the API.

In your case you should get something like this:

var map = L.map('map').setView([55.67, 12.60], 11);

var mywms = L.tileLayer.wms("http://wfs-kbhkort.kk.dk/k101/wms", {
    layers: 'k101:theme-startkort',
    format: 'image/png',
    transparent: true,
    version: '1.1.0',
    attribution: "myattribution"
});
mywms.addTo(map);

[GIS] Using proj4js and Leaflet to transform coordinates

The third argument to proj4 is expected to be an array with two values corresponding to a lat, lon, but you are in fact passing an array with one value which is a Leaflet LatLng object.

The correct way to call proj4 in your code is:

var bngcoords = proj4(bngprojection, [e.latlng.lat, e.latlng.lon]);

or, clearer:

var latlon = e.latlng;
var bngcoords = proj4(bngprojection, [latlon.lat, latlon.lon]);

The reference for calling proj4 is at the Using section in this page.

Best Answer

Related Solutions

Leaflet WMS Integration – Combining Leaflet with Geoserver WMS Map

[GIS] Using proj4js and Leaflet to transform coordinates

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