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Function: addAlphaChannel()

Call Signature​

addAlphaChannel(rgbImage): RasterArrayPixelInterleaved

Defined in: packages/deck.gl-geotiff/src/geotiff/geotiff.ts:21

Add an alpha channel to an RGB image array.

Only supports input arrays with 3 (RGB) or 4 (RGBA) channels. If the input is already RGBA, it is returned unchanged. The result keeps the input's layout: a band-separate image gets a fourth, opaque band.

Parameters​

rgbImage​

RasterArrayPixelInterleaved

Returns​

RasterArrayPixelInterleaved

Call Signature​

addAlphaChannel(rgbImage): RasterArrayBandSeparate

Defined in: packages/deck.gl-geotiff/src/geotiff/geotiff.ts:24

Add an alpha channel to an RGB image array.

Only supports input arrays with 3 (RGB) or 4 (RGBA) channels. If the input is already RGBA, it is returned unchanged. The result keeps the input's layout: a band-separate image gets a fourth, opaque band.

Parameters​

rgbImage​

RasterArrayBandSeparate

Returns​

RasterArrayBandSeparate

Call Signature​

addAlphaChannel(rgbImage): RasterArray

Defined in: packages/deck.gl-geotiff/src/geotiff/geotiff.ts:27

Add an alpha channel to an RGB image array.

Only supports input arrays with 3 (RGB) or 4 (RGBA) channels. If the input is already RGBA, it is returned unchanged. The result keeps the input's layout: a band-separate image gets a fourth, opaque band.

Parameters​

rgbImage​

RasterArray

Returns​

RasterArray