Jaume Sanchez and his "Blocky Earth" for demonstrating the idea that elevations are obtainable and you can do reverse Mercator projections.
And also to Bjorn Sandvik and his tutorial at Textural terrains with three.js.
And to meetar for his examples of height maps.
In particular, Danni's post on the Canvas tag and Three.js really helped.
See also and in particular FGx on GitHub which has been the cause and the impetus for this work - as well as the links on the Technics page.
None of this would be possible without GitHub and its amazing pages facility.
Thank you Khronos Group and Ken Russell of Google for WebGL,
And to Learning WebGL and the San Francisco WebGL Developers Meetup.
Thank you Mr.doob for Three.js
In preparing earlier versions of this data much use was been made of GDAL and Image Magick. Thank you for the useful tools.
The map overlays feature is still quite experimental and attributions and compliance with licensing agreements is shaky at best.
Thank you Open Street Map, Google Maps, Open Cycle Map, Stamen Design, MapQuest and many others for making your map images freely available.
- and for sharing the know-how: TMS/Slippy Map Math
It is the intention - as this work settles down - to comply fully with all attribution and licensing requirements.
The Golembeck gazetter data used to create the places-2000.csv is from Latitude and Longitude for Selected Cities. A number of locations have been added to the gazetteer.
The IHO-IOC GEBCO Gazetteer of Undersea Feature Names is from GEBCO
Steven Horner's GeoJSON data sourced from stevenhorner / PeakVisibility
Previously used sources for the height maps for levels 0 to 4 include:
CleanTOPO2.
The license is: 'You are welcome to use the contents of this site for personal use.' Thank you.
Global Tectonics GTOPO30 Topography On-Line Map Construction Tool.
And without Jonathan de Ferranti's data on Viewfinder Panoramas the world would still be flat...