Class ProjectionUtil

Helper class for projection handling. Makes use of Proj4js.

ProjectionUtil

Index

Constructors

Methods

initProj4DefinitionMappings initProj4Definitions toDmm toDms zerofill

Constructors

constructor

new ProjectionUtil(): ProjectionUtil
Returns ProjectionUtil

Methods

`Static` initProj4DefinitionMappings

initProj4DefinitionMappings(customCrsMappings, useDefaultMappings?): void
Registers custom CRS mappings to allow automatic CRS detection. Sometimes FeatureCollections returned by the GeoServer may be associated with CRS identifiers (e.g. "urn:ogc:def:crs:EPSG::25832") that aren't supported by proj4 and OpenLayers per default. Add appropriate mappings to allow automatic CRS detection by OpenLayers here.
Parameters
- customCrsMappings: CrsMapping | CrsMapping[]
  The custom CRS mappings which will be added additionally to the by default available (s. defaultProj4CrsMappings above).
- useDefaultMappings: boolean = true
  Whether the default CRS should be mapped as well or not. Default is true.
Returns void
- Defined in ProjectionUtil/ProjectionUtil.ts:105

`Static` initProj4Definitions

initProj4Definitions(customCrsDefs?, registerDefaults?): void
Registers custom CRS definitions to the application.
Parameters
- Optional customCrsDefs: CrsDefinition | CrsDefinition[]
  The custom proj4 definitions which should be registered additionally to default available CRS (s. defaultProj4CrsDefinitions above) as well. Further CRS definitions in proj4 format can be checked under http://epsg.io (e.g. http://epsg.io/3426.proj4).
- registerDefaults: boolean = true
  Whether the default CRS should be registered or not. Default is true.
Returns void
- Defined in ProjectionUtil/ProjectionUtil.ts:69

`Static` toDmm

toDmm(value): string
Converts geographic coordinates given in DDD format like DD.DDDD° to the degree, decimal minutes (DMM) format like DDD° MM.MMMM.
Parameters
- value: number
  Value to be converted.
Returns string
Converted value.
- Defined in ProjectionUtil/ProjectionUtil.ts:153

`Static` toDms

toDms(value): string
Converts geographic coordinates given in DDD format like DD.DDDD° to the degree, minutes, decimal seconds (DMS) format like DDD° MM' SS.SSS".
Parameters
- value: number
  Value to be converted.
Returns string
Converted value.
- Defined in ProjectionUtil/ProjectionUtil.ts:138

`Static` zerofill

zerofill(value): string
Adds leading zero to all values less than 10 and returns this new zerofilled value as String. Values which are greater than 10 are not affected.
Parameters
- value: string | number
  Value to be zerofilled.
Returns string
converted value with leading zero if necessary.
- Defined in ProjectionUtil/ProjectionUtil.ts:168