Mapping Parking Tickets in San Francisco (and the problem with simple map markers)
The San Francisco Chronicle’s website, SFGate.com, has a nice map showing the top locations in San Francisco where parking citations are issued. The dataset includes individual locations where 100 or more citations were issued, so it’s a map of the single places you’re most likely to get ticketed (but note that it doesn’t include the [...]
Symbolizing point data in SpatialKey
SpatialKey is especially well-suited at representing point datasets with thousands, even tens of thousands, of rows. Symbolizing such datasets offers many cartographic challenges. Rendering the individual points is the simplest strategy but quickly leads to lost data via overlap and cognitive overload due to the sheer number of displayed points. Further, symbolizing points with points [...]
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