Geography Reference
In-Depth Information
time represent the dynamic intra-urban communication landscape which
cannot be captured using other traditional activity survey data. As shown in
Figure 8, the vertical Bézier curves were created to represent the hourly
phone-call flow across cells. The height of the arcs represents the relative
volume of phone calls. The tall and narrow arcs show strong call communica-
tion within a nearby intra-urban space; while some long distance curves across
non-adjacent cells indicate strong call interactions among these spatially sepa-
rated regions.
