new alk.format.TrafficCamerasJSON(opt_options)
This constructor creates a Format object with which to parse and deocde ALK Traffic Camera data.
Features with Point geometries are generated based on the data and are given
FeatureIds ol.Feature#getId based on the string id of each object.
With this id, the vector source will not add new features with the same id,
thereby eliminating duplicates.
If the optional HashedIdFactory is not replaced, a FnVA32 hash algorithm creates the feature Id based on the entire stringified version of the JSON object for each POI. The chances for collision is 1:2^32.
If a strict adherence to uniqueness is absolutely needed, the idFactory may be replaced with the options.idFactory.
| Option | Type | Description |
|---|---|---|
idFactory |
alk.format.HashedIdFactory | undefined |
This option allows the replacement of the default hashed id
factory used by this format. The default is |
defaultDataProjection |
ol.ProjectionLike | undefined |
Default data projection. Default is |
featureProjection |
ol.ProjectionLike | undefined |
Projection for features read or written by the format. Options passed to read or write methods will take precedence. |