Add roles for layer type, visibility, etc #23
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m-mohr
changed the title
| | ------- | ----------- | | ||
| | basemap | A basemap. | | ||
| | overlay | An overlay with transparent background to show on top of basemaps. | | ||
| | data | A layer with the actual data to show on top of the other layer types. | |
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Could you provide an example of a "layer sandwich" including base, overlay and data? In general, I have the feeling that in some cases the overlay could be on top of the data layer. A basic example is Google Maps with its data layers (Public transit, Traffic etc.) which shows between the background (Default, Satellite or Terrain) and the overlay (street/POI names).
Or would you consider the e.g. traffic data as base layer on top of the other base layer and no data layer? 🤔
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In your example the traffic/public transit is a second overlay, I think. Alternatively, we could argue that both belong to data.
Generally, this is not meant to cover all edge cases, but the most common ones that are supported by mapping libraries by default. Depending on the usecase, you may choose different layer types.
Add roles to specify the layer type, visibility and default layers