👓 Centroid street addresses considered harmful | Nelson Minar

Read Centroid street addresses considered harmful by Nelson Minar (Nelson's log)

The underlying problem here is the database has the polygon for the building but not the exact point of the front door. So it guesses a point by filling in the centroid of the polygon. Which is kinda close but not close enough. A better heuristic may be “center of the polyline that faces the matching street”. That’s also going to be wrong sometimes, but less often.

Some interesting issues with online maps.