https://github.com/tyrasd/tortuosmity

:turtle: tortuOSMity
https://github.com/tyrasd/tortuosmity

openstreetmap openstreetmap-data visualization

Last synced: 17 days ago
JSON representation

:turtle: tortuOSMity

• Host: GitHub
• URL: https://github.com/tyrasd/tortuosmity
• Owner: tyrasd
• License: isc
• Created: 2016-02-03T23:22:41.000Z (almost 9 years ago)
• Default Branch: gh-pages
• Last Pushed: 2023-11-18T16:26:48.000Z (about 1 year ago)
• Last Synced: 2024-11-29T10:42:29.012Z (24 days ago)
• Topics: openstreetmap, openstreetmap-data, visualization
• Language: JavaScript
• Homepage: https://tyrasd.github.io/tortuosmity/
• Size: 12.3 MB
• Stars: 12
• Watchers: 3
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
tortuOSMity

===========

Calculates road-curviness from OpenStreetMap data using [osm-qa-tiles](http://osmlab.github.io/osm-qa-tiles/) and [tile-reduce](https://github.com/mapbox/tile-reduce).

Here, the curviness is defined as the average quotient between road length and end-to-end beeline distance of each osm way tagged as a highway (primary, …, residential) in each zoom-level 12 mercator tile. Each pixel in the output corresponds to one of these tiles and is colored according from violet (where the length quotient is near 1 which means almost straight roads) to red (quotient >= 2).

how to

------

    $ npm install

    

    $ node index.js "path to planet.mbtiles" > world.txt

    $ gnuplot plot.gp

    $ cd tiles

    $ for i in {0..15}; do mkdir $i; done

    $ convert ../world.png -crop 256x256 -set filename:tile "%[fx:page.x/256]/%[fx:page.y/256]" +repage +adjoin "%[filename:tile].png"

    $ find -type f | parallel optipng

result

------

[![](https://raw.githubusercontent.com/tyrasd/tortuosmity/gh-pages/thumb.png)](https://tyrasd.github.io/tortuosmity/)

[(click for world map)](https://tyrasd.github.io/tortuosmity/)

see also

--------

* https://github.com/rory/openstreetmap-bendy-roads

* https://github.com/adamfranco/curvature