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Pedestrians Rhythms By Neigborhood
San Diego’s CityIQ system consists of about 4,400 smart street lamps, which use a variety of sensors to track parking, pedestrians, traffic and a variety of environmental conditions. This analysis reveals pedestrian paterns using time-oriented heatmaps.
Imperfect Tests and The Effects of False Positives
The US government has been widely criticized for its failure to test as many of its citizens for COVID-19 infections as other countries. But is mass testing really as easy as it seems? This analysis of the false positive and false negative rates of tests, using published sensitivities and specificities for COVID-19 rt-PCR and antigen…
Crime Rhythm Maps
Exploring crime patterns with Ryhthm Maps, heat maps with two time dimensions.
An isochrone is the area of travel from a point in a constant time, which allows for more realistic analysis of retail cachment areas than a simple radius.
Rent During COVID
Rents are declining in some large metros and increasing in some small metros, an indicator of an important but not widespread shift.
San Diego Police Calls for Service
A simple analysis of calls for service to the San Diego Police, with maps and temporal analysis.