mapbox / mapbox/mapbox-gl-js

enable hypsometric tinting from raster-dem sources

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TypeScript
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Description

follow-up/enhancement to #5286, we should enable users to tint their hillshade layers based on elevation values:

![image](https://user-images.githubusercontent.com/2425307/36762288-ab1e2020-1bd7-11e8-91b5-00e3fa0fa480.png)
(from terraincartography.com)

some more background: http://www.reliefshading.com/colours/hypsometric/

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First steps

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Research direction

No source files, tests, or entry points are named. Start by reading issue #5286 and the linked background on hypsometric colouring, then locate the existing raster-dem hillshade implementation; done should mean elevation values from raster-dem sources can control tinting in hillshade layers.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript
Domain
computer-graphics, frontend, web-dev
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
30/100

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