locationtech / geotrellis

GeoTrellis is a geographic data processing engine for high performance applications.

http://geotrellis.io

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Add union to merge methods #3482

Open moradology opened 2 years ago

moradology commented 2 years ago

Overview

This PR adds a tile merging function, union which combines two input tiles so as to preserve all non-overlapping regions.

Checklist

[x] ./CHANGELOG.md updated, if necessary. Link to the issue if closed, otherwise the PR.
[x] New user API has useful Scaladoc strings
[x] Unit tests added for bug-fix or new feature

Demo

Union of two tiles; tile 1 with extent 0,0,1,1 and tile2 with extent 2,2,2.2,2.2. Output tile with extent of 0,0,2.2,2.2:

Union of overlapping tiles with a function applied to average overlapping cell values:

Closes #3365