footprint

This defines a simple format, serialized using MPK, containing "footprints". A footprint is simply a multipolygonal area given in WGS84 coordinates, representing a remote sensing satellite's pixel.

Converting footprint information from different satellites to a common format makes it more convenient when looking for simultaneous (coincident) observations.

A tool, fptool, allows merging different files, exporting the footprints in GeoJSON format (with or without pretty-printing), drawing them as SVG or dumping their contexts in human-readable text form.

Changes

• 0.2: Use anyhow for errors, reorganize into workspace
• 0.1: Initial version