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virtual-layers's Introduction

GitHub GeoJSON Virtual Layers

Exploring the concept of storing GeoJSON features in individual files in a single repository and using virtual layers to visualize them.

This concept should enable:

  • Applications to better circumvent GitHub file size limitations
  • The ability to fetch only those features required by the application
  • The ability to track edits/metadata for individual features (record level metadata)

Approach:

  • A dataset is a repo,
  • A record in the dataset is a file,
  • The assemblage of the dataset is described by a vlayer file (json),
  • Views of datasets can be described by other vlayer files (json),
  • A (data.json)[http://project-open-data.github.io/schema/] file describes the dataset
  • The vlayer and data.json files should be at the repo route

This approach is based upon a concept put forth by Mike Byrne.

virtual-layers's People

Contributors

geobabbler avatar

Watchers

 avatar James Cloos avatar David Puckett avatar Michael Byrne avatar

Forkers

feomike

virtual-layers's Issues

geographic approach/tiling

i wrote a small python script to use ogr2ogr to export the data. there are several issues here;

  • the simple approach makes (n) number of files per number of rows exported; potentially too many for a single git folder; a better approach is to institute logic that takes some sort of 'tiling' into account, and potentially creates sub-directories or something like that
  • the simple approach doesn't allow for 'human' readable file names, which could be important

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