This repository reads and writes the interpreation masks for fisheries acoustic
The mask will be region based and the grid will be time and depth. The sound speed used to calculate the depth will be stored as metadata.
The region will be defined to include both in and on the region outline. Donut shapes will be supported.
Background information can be found here: [https://docs.google.com/document/d/1F5ub9-ElnGWgoFzOhwrNiAB6fZRhKI8Nw6FskMhzI0g/edit#heading=h.ihw2gdxqw9td]