mactrem / com-tiles-evaluation

Evaluating COMTiles

This repo compares COMTiles against other cloud optimized tile archive formats like PMTiles, Cotar and TileBase. There will be also a evaluation of possible improvements of the current COMTiles spec regarding the index size and decoding performance.

Project structure

• The pyramid project compares different lightweight compression algorithms regarding compression ratio and decoding performance for the root pyramid of a COMTiles archive.
• The lib folder contains modified library versions of the profiled cloud optimized tile archive formats for the purpose of better profiling the formats.
• In the data folder there are selected test data sets for running the evaluation.
• The fragment project evaluates the lazy loading of COMTiles index fragments against the approaches of the other tile archive formats.

Setup

• run npm install in lib/comtiles
• run npm install in lib/pmtiles
• run npm install in fragment