Class: ol.Projection

Members

<static, constant> EPSG_3857_EXTENT :ol.Extent

Source:

• projection.js, line 476

<static, constant> EPSG_3857_HALF_SIZE :number

Source:

• projection.js, line 469

<static, constant> EPSG_3857_RADIUS :number

Source:

• projection.js, line 434

<static, constant> EPSG_4326_LIKE_PROJECTIONS :Array.<ol.Projection>

Projections equal to EPSG:4326.

Source:

• projection.js, line 542

Methods

<static> addProj4jsProjection

Parameters:

Name	Type	Description
proj4jsProjection	ol.Proj4jsProjection	Proj4js projection.

Source:

• projection.js, line 179

<static> addProjection

Parameters:

Name	Type	Description
projection	ol.Projection	Projection.

Source:

• projection.js, line 190

<static> addProjections

Parameters:

Name	Type	Description
projections	Array.<ol.Projection>	Projections.

Source:

• projection.js, line 203

<static> addTransform

Registers a conversion function to convert coordinates from the source projection to the destination projection.

Parameters:

Name	Type	Description
source	ol.Projection	Source.
destination	ol.Projection	Destination.
transformFn	ol.TransformFunction	Transform.

Source:

• projection.js, line 235

<static> cloneTransform

Parameters:

Name	Type	Description
point	ol.Coordinate	Point.

Source:

• projection.js, line 397

Returns:

Equal point (different reference).

Type

ol.Coordinate

<static> createProjection

Parameters:

Name	Type	Description
projection	ol.Projection | string | undefined	Projection.
defaultCode	string	Default code.

Source:

• projection.js, line 215

Returns:

Projection.

Type

ol.Projection

<static> equivalent

Checks if two projections are the same, that is every coordinate in one projection does represent the same geographic point as the same coordinate in the other projection.

Parameters:

Name	Type	Description
projection1	ol.Projection	Projection 1.
projection2	ol.Projection	Projection 2.

Source:

• projection.js, line 293

Returns:

Equivalent.

Type

boolean

<static> forwardSphericalMercator

Transformation from EPSG:4326 to EPSG:3857.

Parameters:

Name	Type	Description
point	ol.Coordinate	Point.

Source:

• projection.js, line 443

Returns:

Point.

Type

ol.Coordinate

<static> getFromCode

Parameters:

Name	Type	Description
code	string	Code which is a combination of authority and identifier such as “EPSG:4326”.

Source:

• projection.js, line 254

Returns:

Projection.

Type

ol.Projection

<static> getTransform

Searches a function that can be used to convert coordinates from the source projection to the destination projection.

Parameters:

Name	Type	Description
source	ol.Projection	Source.
destination	ol.Projection	Destination.

Source:

• projection.js, line 313

Returns:

Transform.

Type

ol.TransformFunction

<static> getTransformFromCodes

Given the projection codes this method searches for a transformation function to convert coordinate from the source projection to the destination projection.

Parameters:

Name	Type	Description
sourceCode	string	Source code.
destinationCode	string	Destination code.

Source:

• projection.js, line 369

Returns:

Transform.

Type

ol.TransformFunction

<static> identityTransform

Parameters:

Name	Type	Description
point	ol.Coordinate	Point.

Source:

• projection.js, line 388

Returns:

Unaltered point (same reference).

Type

ol.Coordinate

<static> inverseSphericalMercator

Transformation from EPSG:3857 to EPSG:4326.

Parameters:

Name	Type	Description
point	ol.Coordinate	Point.

Source:

• projection.js, line 457

Returns:

Point.

Type

ol.Coordinate

<static> isProj4jsSupported

Source:

• projection.js, line 379

Returns:

True if Proj4js is available and enabled.

Type

boolean

<static> transform

Transforms the given point to the destination projection.

Parameters:

Name	Type	Description
point	ol.Coordinate	Point.
source	ol.Projection	Source.
destination	ol.Projection	Destination.

Source:

• projection.js, line 410

Returns:

Point.

Type

ol.Coordinate

<static> transformWithCodes

Parameters:

Name	Type	Description
point	ol.Coordinate	Point.
sourceCode	string	Source code.
destinationCode	string	Destination code.

Source:

• projection.js, line 422

Returns:

Point.

Type

ol.Coordinate

getCode

Source:

• projection.js, line 60

Returns:

Code.

Type

string

getExtent

Source:

• projection.js, line 68

Returns:

Extent.

Type

ol.Extent

getUnits

Source:

• projection.js, line 76

Returns:

Units.

Type

ol.ProjectionUnits