Mapping for Malaria Elimination
Visualize the mapping efforts of HOT and DigitalGlobe support of Malaria Elimination
See the Tasking Manager to learn how you can help and finish mapping 500,000 km2!
Requirements
- SQLite 3
- tippecanoe
- Node 4
npm install .
npm install -g osm-qa-filter
Data Processing
You can find the data processing scripts in scripts
.
cd ./scripts
- Prepare the QA tiles extract for the affected regions
./download-extract.sh
- Filter buildings using osm-qa-filter to limit it to buildings edited after 1st of July 2016.
osm-qa-filter \
-m malaria.qa.mbtiles -o malaria_buildings.geojson \
--filter '["all", ["has", "building"], [">=", "@timestamp", 1467331200]]'
- Filter to the mapped area
./filter-area.js -i malaria_buildings.geojson -o malaria_buildings_filtered.geojson
- Add the date as attribute to the features.
./day.js -i malaria_buildings_filtered.geojson -o malaria_buildings_day.geojson
- Calculate centroids of all the buildings
./centroid.js -i malaria_buildings_day.geojson -o malaria_buildings_day_centroid.geojson
- Encode vector tiles (polygons for high zoom levels and points for low zoom levels) and stitch them back together into a single MBTiles.
tippecanoe --layer malaria_building -o malaria_buildings.mbtiles --include "@day" --minimum-zoom=11 --maximum-zoom=13 < malaria_buildings_day.geojson
tippecanoe --layer malaria_building -o malaria_buildings_low.mbtiles --include "@day" --minimum-zoom=0 --maximum-zoom=10 < malaria_buildings_day_centroid.geojson
./patch.sh malaria_buildings_low.mbtiles malaria_buildings.mbtiles
echo "update metadata set value=0 where name = 'minzoom';" | sqlite3 malaria_buildings.mbtiles
rm malaria_buildings_low.mbtiles
- Calculate buildings per day and total unique contributors
./building-totals.js -i malaria_buildings_day_centroid.geojson -o malaria_buildings_by_day.json
./contributor-totals.js -i malaria_buildings_day.geojson -o malaria_contributors.json
- Upload the vector tiles to Mapbox Studio!
Generate Daily Statistics
You can find the data processing scripts in scripts
.
cd ./scripts
./generate-day-stats.sh
This will generate a CSV file with daily statistics to show the progress.