Creating User Friendly Massive Maps

Kelvin Nicholson

The Problem -33.86671912345,151.20568165842

-33.8667,151.2056

ST_Simplify(the_geom,0.5)

Examples – NPR U.S. Census 2010

Examples – NPR Poisoned Places

Examples – BKL YNR | Block by Block

Solution – UTFGrids

Solution – UTFGrids

Solution – TileMill

Examples – Commute Time (57,462 polygons)

Examples – Commute, City of Cities

Examples – Urban Density

References

• BKL YNR | Block by Block (http://bklynr.com/block-by-block-brooklyns-past-and-present/)• Have a look at the UTF Grid (http

://milkator.wordpress.com/2013/05/03/have-a-look-at-the-utf-grid/)• UTFGrid Spec 1.3 (

https://github.com/mapbox/utfgrid-spec/blob/master/1.3/utfgrid.md)