---
title: "WorkerDEMTileParameters | JavaScript maps SDK"
description: "Documentation for MapTiler SDK"
---

> For AI agents: a documentation index is available at [/llms.txt](https://docs.maptiler.com/llms.txt). Markdown versions of all pages are available by appending .md to any URL.

# Type Alias WorkerDEMTileParameters

WorkerDEMTileParameters: [TileParameters](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.TileParameters/) & {  
    baseShift: number;  
    blueFactor: number;  
    encoding: [DEMEncoding](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.DEMEncoding/);  
    greenFactor: number;  
    rawImageData: [RGBAImage](https://docs.maptiler.com/sdk-js/api-reference/classes/Externals.RGBAImage/) | [ImageBitmap](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.ImageBitmap/) | [ImageData](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.ImageData/);  
    redFactor: number;  
}