Closed talos closed 8 years ago
Issue seems to be in the clipping process here:
https://github.com/CartoDB/bigmetadata/blob/master/tasks/us/census/tiger.py#L586
In order to eliminate waterlogged artifacts, very small & simple geometries were eliminated. This works when clipping larger geometries, but starts to break in urban block groups since some block groups are smaller than 5000 square meters and have fewer than ten points.
Turns out it's not the 5000 sq m rule -- the smallest block group in the country is 5494.84281786486 sq meters. It's simplicity -- the simplest has only 5 points.
Query:
Looks like: