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license: gpl-3.0
height: 1100
border: no

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height: 650

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Simulation of a Block Voting election using STV ballots.

This code simulates a Block Voting election (which is what the OpenStreetMap US chapter uses to elect its board), using real-world Single Transferable Vote ballots (which is the system that the international OpenStreetMap Foundation uses).

STV uses ranked ballots, where voters rank as many candidates as they wish, in order of preference. Block Voting is not a ranked ballot, and voters choose up to n candidates, where n is the number of seats to be elected.

We can simulate a Block Voting election using STV ballots if we take the top n ranked candidates from each ballot and ignore their ordered ranking.

STV ballot files for the 2014 and 2015 OSMF elections can be found here and here.

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OSM Data Issues in Asia and Africa

High priority, easy fixes:

1. Admin1 Capital Cities in the Phillipines incorrectly have capital=yes when they should have capital=4 or admin_level=4
2. Many cities have missing population data, this will prevent cities with larger populations from rendering at low zooms. Main country of concern is China, which may also have erroneous population data added by a OSM contributor to promote certain cities over others.
3. South Korea: many features incorrectly have place=town resulting in an overwhelming amount of erroneous town labels. See this issue in OSM Carto for more info.

High priority, but requires more work:

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Zoomable raster world map (which happens to be using Stamen's Map Stack).

Apparently I broke it by trying a projection other than the original. :(

Based off Calvin Metcalf's version, which in turn is based off Jason Davies map which is a combination of Mike Bostock’s raster reprojection, automatic projection tiles and a MapBox terrain example.

Thanks to Mike Bostock and Nelson Minar for their comments and encouragement! And Obviously Jason Davies for making the original.

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Color ramps: *-fill

Basic usage

marker-fill: ramp([column_name], colorbrewer(Greens));
                  |                    |
                  v                    |
      column to calculate ramp         |
                                       v

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