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stac-extensions / web-map-links

Allows to provide links to web maps for visualization purposes
Apache License 2.0
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How to handle multiple alternative visualizations #25

Closed aaime closed 4 months ago

aaime commented 7 months ago

Say that a single product or collection has multiple visualizations, e.g., quality masks, different false color maps, maybe some index computed on the fly (e.g., NDVI). What's the suggested approach to offer such multitude of visualizations?

Is it possible, and recommended, to create multiple links, each one having a "wms" rel, each one offering a different visualization of the same collection/product? Or is the specification meant to be used so that only one link with "wms" rel is produced/expected?

emmanuelmathot commented 7 months ago

have you checked out https://github.com/stac-extensions/render ?

aaime commented 7 months ago

Interesting indeed... but that's not what I'm looking for. For server-side rendered visualizations, is it possible and recommended to use multiple "wms" links, in the context of the web-map-links extension?

m-mohr commented 4 months ago

You can have as many e.g. wms links as you like. To further specify their scope, you can use the roles array as recently added to core: https://github.com/radiantearth/stac-spec/pull/1269