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Jaanga Terrain Contents

Methods, tools, data and demos to create lively 3D cartography - faster and more easily than ever before

It's all more data than can fit in a single GitHub repository. The following is an annotated table of contents of what is in each repository:

Jaanga Terrain

Repository: Terrain

  • Overviews, main wiki and primary issues page are all maintained in this repository
  • Various documents provide descriptions of methodology and tools for fast easy access to elevation data for zoom levels 8 to 18
  • Also holds the heightmaps with elevation data for Tile Map Service (TMS) zoom levels 0-7, 16K PNG files with 165 MB of files
  • Data sourced from Jonathan de Ferranti's Viewfinder Panoramas ~ 15 second data set
  • These heightmaps cover every part of the world that OSM covers - matches Slippy Map

Jaanga Terrain DE15

Repository: Terrain DE15

  • Data sourced from Jonathan de Ferranti's Viewfinder Panoramas ~ 15 second data set
  • Data supplied as PNG files organized in the Tile Map Service (TMS) 'hierarchical bins' manner;
  • About one data point for every 500 meters
  • Data set covers the entire globe
  • Approximately 836 MB of data in 128 folders of 128 files each or 16,384 PNG files

Jaanga Terrain DE3

Repository: Terrain DE3 0-31
Repository: Terrain DE3 32-63
Repository: Terrain DE3 64-95
Repository: Terrain DE3 96-127

  • Data sourced from Jonathan de Ferranti's Viewfinder Panoramas ~ 3 second data set
  • Data supplied as PNG files organized in the Tile Map Service (TMS) 'hierarchical bins' manner;
  • About one data point for every 90 meters
  • Approximately 2.85 GB of terrain data in 128 folders of 128 files each or 16,384 PNG files
  • Files distributed via four repositories to comply with the GitHub request of one gigabyte maximum per repository

Jaanga Terrain Viewer

Repository: Terrain Viewer

A good place to start - especially if you just want to see the data...

  • A variety of tools, apps, demos and tips
  • All work in your browser - no plugin required
  • Runs files locally or sourced from a static file server - such as GitHub Pages
  • Supports real-time zoom, pan and rotate
  • Toggle between two types of camera controllers: first person or trackball
  • Easy to build your own place lists
  • Obtain a permalink with location, zoom and scale using window.location.hash. Source code page has sample links
  • Support for large user-defined gazette
  • Toggle 3D placards that show place names
  • Supports many 2D map overlays
  • Generic 3D library - can be used with other apps and libraries
  • FOSS, built with less than 500 lines of code
  • Very small file size ~ you can easily open up and start hacking
  • Fast enough to be usable

Jaanga Terrain Plus

Repository: Terrain Plus

  • Gazetteers used by the viewers
  • Heightmaps used in early versions

Jaanga Files

You have two ways of viewing the files in the Jaanga Terrain repositories: