Class BilFormat

Decoder for BIL images.

At the moment, only single band BIL files are supported and it is tested only on IGN elevation WMS and WMTS layers.

 // Create an elevation source
const source = new WmsSource({
    url: 'https://data.geopf.fr/wms-r',
    projection: 'EPSG:2154',
    layer: 'ELEVATION.ELEVATIONGRIDCOVERAGE.HIGHRES',
    imageFormat: 'image/x-bil;bits=32',
    format: new BilFormat(),
});

const elevationLayer = new ElevationLayer({ source });

map.addLayer(elevationLayer);

See it in action.

Hierarchy (view full)

Constructors

constructor

Properties

dataType flipY isBilFormat isImageFormat type

Methods

decode

Constructors

constructor

  • new BilFormat(options?): BilFormat

  • Parameters

    • Optionaloptions: {
          enableWorkers?: boolean;
          workerConcurrency?: number;
      }

      Decoder options.

      • OptionalenableWorkers?: boolean

        Enables processing raster data in web workers.

        Default Value

        true
      • OptionalworkerConcurrency?: number

        The maximum number of workers created by the worker pool. If undefined, the maximum number of workers will be allowed.

        Default Value

        undefined

    Returns BilFormat

Properties

ReadonlydataType

dataType: TextureDataType

ReadonlyflipY

flipY: boolean

ReadonlyisBilFormat

isBilFormat: boolean = ...

ReadonlyisImageFormat

isImageFormat: true = ...

Readonlytype

type: "BilFormat" = ...

Methods

decode

  • decode(blob, options): Promise<{
        max: number;
        min: number;
        texture: DataTexture;
    }>

  • Decode a Bil blob into a DataTexture containing the elevation data. At the moment only one band BIL is supported.

    Parameters

    • blob: Blob

      the data to decode

    • options: DecodeOptions

      the decoding options

    Returns Promise<{
        max: number;
        min: number;
        texture: DataTexture;
    }>

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