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I am hitting CORS issue that is very similar to the one described for the landast-tiler. However, this time setting a AWS_REGION variable doesn't seem to fix the problem.

After digging around a little in the serverless issues (e.g. #4681) it seems that maybe we need to define Access-Control-Allow-* headers ?

If you want to use CORS with the lambda-proxy integration, remember to include the Access-Control-Allow-* headers in your headers object

As defined in the serverless docs

Here is a screenshot of how it looks on the frontend:

I've created a sentinel-tiler server on AWS, and all seems to be working really well, with the exception that band 10 always produces zero value pixels.

I'm using a URL structured as follows:
api-gateway-url/sentinel/tile/S2A_tile_20161202_16SDG_0/10/262/397.png?rgb=09,10,11&tile=256

All of the other bands are working just fine. Rearranging the rgb parameter (e.g. '10,11,12' or '9,11,10') doesn't help.

Is this a known issue, or am I likely doing something wrong? Or might there be something wrong with my tile server?

EDIT: I'd thought this was happening for band 11, but it's band 10.

Got the error A defined coordinate reference system is required which appears to be a rasterio error. After rebuilding with the custom image it works fine.

Sorry haven't investigated past that, just thought I'd drop a note here in case anyone else hits this while upgrading.

I would like to output transparent images.
I don't know if that requires png.
Today it looks black outside of the satelite image, if that black color could be transparent, I could have a map (like OSM) and it would be easier to know where you are.
(And I would get something reasonable for two neigbouring (large) tiles.)

In histo: - delimited rgb histogram min/max (default: 0,16000-0,16000-0,16000 )

It seems like parameter 1, 2, 3 corresponds to RGB. But what does the parameter 0 do? Modifying doesn't seem to do anything. When you supply a single number, does it specify the max?

code url:
https://github.com/mapbox/sentinel-tiler/blame/master/README.md#L133

Live example can be found at http://www.cbroderick.me/sentinel/

Not super fast but will give people the idea.