L.IProjection

IProjection

An object with methods for projecting geographical coordinates of the world onto a flat surface (and back). See Map projection.

Methods

Method	Returns	Description
`project( <LatLng> latlng )`	`Point`	Projects geographical coordinates into a 2D point.
`unproject( <Point> point )`	`LatLng`	The inverse of `project`. Projects a 2D point into geographical location.

Defined Projections

Leaflet comes with a set of already defined projections out of the box:

Projection	Description
`L.Projection.SphericalMercator`	Spherical Mercator projection — the most common projection for online maps, used by almost all free and commercial tile providers. Assumes that Earth is a sphere. Used by the `EPSG:3857` CRS.
`L.Projection.Mercator`	Elliptical Mercator projection — more complex than Spherical Mercator. Takes into account that Earth is a geoid, not a perfect sphere. Used by the `EPSG:3395` CRS.
`L.Projection.LonLat`	Equirectangular, or Plate Carree projection — the most simple projection, mostly used by GIS enthusiasts. Directly maps `x` as longitude, and `y` as latitude. Also suitable for flat worlds, e.g. game maps. Used by the `EPSG:3395` and `Simple` CRS.

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