I'm helping colleagues on a project that surveyed residents about their evacuation plans in the face of another large hurricane. Using a combination of PHP and Google Maps, I was able to plot the locations of survey respondents and one of the hypothetical tracks used in the survey. The underlying data is being used to analyze factors that might affect evacuation patterns. One of those factors is a distance-based measure: the distance from landfall, and the distance from the track itself. Preliminary analysis suggests that distance to landfall is a significant factor, yet distance to track is not.
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