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Support feature timeseries extraction

See original GitHub issue

This is a feature request on behalf of @mads-gras.

The idea is to extract values from a stack of images at the same position. Challenges:

Opening many COGs over S3 and extracting small subsets will be slow.
We would need another API endpoint, and a clean way to specify the images you want (can’t rely on last key as in /rgb).
Terracotta does not know about pixels, only about xyz tiles and physical bounds.

If we want to implement this, I think the only way to do it would be to accept a GeoJSON AOI and use that as a window (which can be arbitrarily small). We will also have to do a performance test to see if it’s anywhere near acceptable.

Issue Analytics

State:
Created 5 years ago
Comments:12

Top GitHub Comments

1reaction

ewsterrenburgcommented, Sep 6, 2019

@j08lue Thanks for the quick reaction.

It makes sense and is more along the lines of what I was originally thinking (then came across terracotta looking for a solution to serve tiles for the layers to be plotted in the chart and started thinking out loud while being blinded by all goodies (api documentation, zappa etc) already in place 😃

I can imagine a set of object keys or file paths for a certain location (possibly in combination with key) would be helpful. Let me think this a bit more through…

1reaction

mrpgraaecommented, Oct 3, 2018

Scratch the first one, we have the bounds in the metadata.

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