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Leaflet custom projection
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<!DOCTYPE html> | |
<html> | |
<head> | |
<title>Leaflet custom projection example</title> | |
<meta charset="utf-8" /> | |
<link rel="stylesheet" href="//cdn.leafletjs.com/leaflet-0.7/leaflet.css" /> | |
<script src="//cdn.leafletjs.com/leaflet-0.7/leaflet-src.js"></script> | |
<script src="//cdnjs.cloudflare.com/ajax/libs/proj4js/2.0.0/proj4.js"></script> | |
<script src="//mapserv.utah.gov/cdn/examples/proj4leaflet.js"></script> | |
</head> | |
<body> | |
<div id="map" style="width: 600px; height: 400px"></div> | |
<br/> | |
<div id="map2" style="width: 600px; height: 400px"></div> | |
<script> | |
/** UTM Albers equal area projection in leaflet **/ | |
// create new Proj4Leaflet CRS | |
var crs = new L.Proj.CRS('EPSG:3085', '+proj=aea +lat_1=27.5 +lat_2=35 +lat_0=18 +lon_0=-100 +x_0=1500000 +y_0=6000000 +ellps=GRS80 +units=m +no_defs', { | |
origin: [416729.617118, 412156.942963], | |
bounds: [ | |
[-2410329.835748, 13545805.10653], | |
[-10850237.174162, 3977377.378424] | |
], | |
resolutions: [ | |
4891.96999883583 * 8, | |
4891.96999883583 * 4, | |
4891.96999883583 * 2, | |
4891.96999883583, | |
2445.98499994708, | |
1222.99250010583, | |
611.496250052917, | |
305.748124894166, | |
152.8740625, | |
76.4370312632292, | |
38.2185156316146, | |
19.1092578131615, | |
9.55462890525781, | |
4.77731445262891, | |
2.38865722657904, | |
1.19432861315723, | |
0.597164306578613, | |
0.298582153289307, | |
0.298582153289307 / 2, | |
0.298582153289307 / 4, | |
0.298582153289307 / 8, | |
0.298582153289307 / 16 | |
] | |
}); | |
// pass crs into map constructor | |
var map = window.map = new L.Map('map', { | |
crs: crs | |
}).setView([39.84, -98.58], 1); | |
var wms = window.wms = new L.TileLayer.WMS('http://sampleserver1.arcgisonline.com/ArcGIS/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer/WMSServer', { | |
transparent: true, | |
format: 'image/png', | |
layers: '0', | |
tiles: true, | |
continuousWorld: true | |
}).addTo(map) | |
/** UTM Zone 13 projection in leaflet **/ | |
// create new Proj4Leaflet CRS | |
var crs = new L.Proj.CRS('EPSG:26913', '+proj=utm +zone=13 +ellps=GRS80 +datum=NAD83 +units=m +no_defs', { | |
origin: [656736.237411, 3423829.249531], | |
bounds: [ | |
[500000, 9997964.94294], | |
[500000, -9997964.94294] | |
], | |
resolutions: [ | |
4891.96999883583 * 8, | |
4891.96999883583 * 4, | |
4891.96999883583 * 2, | |
4891.96999883583, | |
2445.98499994708, | |
1222.99250010583, | |
611.496250052917, | |
305.748124894166, | |
152.8740625, | |
76.4370312632292, | |
38.2185156316146, | |
19.1092578131615, | |
9.55462890525781, | |
4.77731445262891, | |
2.38865722657904, | |
1.19432861315723, | |
0.597164306578613, | |
0.298582153289307, | |
0.298582153289307 / 2, | |
0.298582153289307 / 4, | |
0.298582153289307 / 8, | |
0.298582153289307 / 16] | |
}); | |
// pass crs into map constructor | |
var map2 = window.map = new L.Map('map2', { | |
crs: crs | |
}).setView([39.84, -98.58], 2); | |
var wms = window.wms = new L.TileLayer.WMS('http://sampleserver1.arcgisonline.com/ArcGIS/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer/WMSServer', { | |
transparent: true, | |
format: 'image/png', | |
layers: '0', | |
tiles: true, | |
continuousWorld: true | |
}).addTo(map2) | |
</script> | |
</body> | |
</html> |
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