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Fig. 3 | Environmental Health

Fig. 3

From: Automated classification of time-activity-location patterns for improved estimation of personal exposure to air pollution

Fig. 3

Example graphical flow of space-time utilisation distribution analysis (step 2) implemented with the T-LocoH package in R. (a) First, nearest neighbours were identified with the adaptive method (\(\alpha\)-NN) (b) Minimum convex polygons (hulls) were then produced from these \(\alpha\)-NN (c) Hulls were merged by point density to create density isopleths (utilisation distributions) to characterise space intensity use. (d) Hulls were merged by the eccentricity of the bounding ellipse to create elongation isopleths to characterise movement and were projected on a map (Google Maps 2021)

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