# RasterLayerSource

***

The source of a raster layer's data.

## Properties

### imageTileTemplateUrl

> **imageTileTemplateUrl**: `string`

A URL template for fetching image tiles for the raster.

***

### encodedTileTemplateUrl

> **encodedTileTemplateUrl**: `string`

A URL template for fetching encoded tiles for the raster.

The encoded raster value can be calculated from the red, green, and blue values of the pixel\
using the following formula:

```
base + ((RED << 16) + (GREEN <<8) + BLUE) * interval
```

or

```
base + (RED * 256 * 256 + GREEN * 256 + BLUE) * interval
```

***

### bands

> **bands**: [`RasterBand`](/js-sdk-api-reference/layers/rasterband.md)\[]

List of encoded raster bands


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