Metroextractor Chef

Attribution

Heavily influenced by Mike Migurski's Extractotron

What does it do?

Downloads the latest planet in pbf format. Produces, via osmconvert or vex, a number of metro extracts in both pbf and bz2 formats. Produces shape files in both imposm and osm2pgsql formats.

Projections

GeoJSON is generated via ogr2ogr and output in CRS:84 (e.g. EPSG:4326) projection.

Imposm shapfiles are generated in EPSG:4326.

What hardware do I need?

This depends on a few factors:

• what backend processing system for extracts do you want to use? We support vex and osmconvert.
• if you're using vex, do you have enough memory to store the planet in RAM?
• if osmconvert, how many cores do you have and how fast are they?

The short version is that this could take anywhere from a few hours to days depending on setup and hardware .

If you'd rather not go that route, you're in luck. We'll be producing extracts weekly, and you can find them here: Mapzen Metro Extracts

Contributing

Extract creation is driven off the cities.json file found here: metroextractor-cities. If you'd like to add an extract, you can either update the file directly if you feel comfortable doing so and submit a pull request, or open a GitHub issue and we'll look into doing it for you.

If you'd like to update any other code, please fork, update, write specs for your changes and submit a pull.

Usage

include_recipe 'metroextractor'

Supported Platforms

Tested and supported on the following platforms:

• Ubuntu 14.04LTS

Requirements

• Chef >= 11.4

Attributes

• see attributes/default.rb

Dependencies

apt, ark, osm2pgsql, postgresql, python, user

Vagrant Environment

Installation

vagrant plugin install vagrant-berkshelf 
bundle install
berks install
vagrant up
vagrant ssh

Note

• running a planet download and then processing extracts on your local machine might be hit or miss (likely miss)

I don't like Vagrant

• well then sir, provision an Ubuntu12.04 LTS system with the provider of your choice, and then bootstrap with chef-solo: knife solo bootstrap root@${host} -r 'recipe[metroextractor]'
• and re-cook with the following: knife solo cook root@${host} -r 'recipe[metroextractor]'
• alternatively, you can add the metroextractor cookbook to your chef server and wrap it as you see fit

License and Authors

License: GPL Authors: grant@mapzen.com