Support 256 x 256 output tilesizes about rio-rgbify HOT 3 OPEN

Note that mapbox.terrain-rgb uses 256.

from rio-rgbify.

Note that mapbox.terrain-rgb uses 256.

While the default tile endpoint is indeed 256, the full size tiles (@2x) are retina resolution at 512x512 (same for all of our raster tiles: https://www.mapbox.com/api-documentation/#retrieve-tiles -- they are resized on-the-fly).

512: https://api.mapbox.com/v4/mapbox.terrain-rgb/11/334/[email protected]?access_token=<token>

256: https://api.mapbox.com/v4/mapbox.terrain-rgb/11/334/793.pngraw?access_token=<token>

I'd guess that for hillshading 512 is overkill, but 512 tiles work great for other uses in order to make fewer calls to the api, eg: https://www.mapbox.com/labs/terra/#15.1541/-25.3483/131.0368/31.8413/36

from rio-rgbify.

I think the default tileSize should be 512. As mapbox-gl-js uses 512 tiles, a 256 tile source would cause mapbox-gl-js request four 256-based tiles to compose a 512 tile. Not only more requests, but also the total size of tiles increase.

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