kieran / votewell

strategic voting calculator

VoteWell

Blog post

Running locally

# install & run
nvm use
make run

build:

make dist

Sources

Poll data (Ontario 2018) Poll data (Canada 2019)

Ward boundaries (Ontario 2018) Ward boundaries (Canada 2019)

Converting boundary Shapefiles to geoJson

install ogr2ogr for coordinate conversion

• download & install GDAL from https://www.kyngchaos.com/software/frameworks/

echo 'export PATH=/Library/Frameworks/GDAL.framework/Programs:$PATH' >> ~/.bash_profile
source ~/.bash_profile

convert coordinates:

cd data
ogr2ogr -t_srs EPSG:4326 -f geoJSON -lco COORDINATE_PRECISION=7 ridings.json path/to/your_shapefile.shp

simplify the shape (for faster lookups)

• go to https://mapshaper.org/
• upload ridings.json
• simplify (6-12% is a good starting range)
• export, overwrite original file