Geospatial Presence

This map provides a heat map representation of my presence in space over an unspecified time period in the past.

The data was collected using Purple Robot, which logged its readings to the website backend. A periodic process reviews those readings and generates a report that is rendered into the heat map shown on the left.

Rather than simply plot using the raw observations, the weight of each location is the output of the logarithm of the number of times observed in a given location using a base of 100 to smooth out the severe spikes caused by spending the majority of my time at work and home:

weight = log100(observations)

The heat map overlay on Google Maps is implemented using heatmap.js.