What is this? It's about 7 years of OpenStreetMap growth. Each step in the animation is 72 days, and the colors alternate between red and blue. The data is from Latest Weekly Changesets from planet.openstreetmap.org, processed into an SQLite database with sometimemachine. The points being drawn are the centers of the bounding boxes of changesets. There are 13,098,655 changesets in the database. The script to generate the visualization is below, and the rest of the make steps are
gm mogrify -format gif *.png gifsicle --loop -d20 *.gif > ../animation.gif
Fast growth in rectangular areas (like the DRC) is typically because of imports to the OSM data from other open datasources. The dots in the middle of the ocean are because of bounding boxes that either cross the meridian or span the entire globe.