Continuous cartogram construction

Area cartogramsare used for visualizing geographically distributed data by attaching measurementsto regions of a map and scaling the regions such that their areasare proportional to the measuredquantities. A continuous areacartogramis a cartogram that is constructedwithout changing the underlying map topology. Wepresenta new algorithm for the construction of continuous area cartograms that was developed by viewing their construction as a constrained optimization problem. The algorithm usesa relaxation method that exploits hierarchical resolution, constraineddynamics,and a schemethat alternatesgoals of achieving correct region areasand adjusting region shapes. It is comparedfavorably to existing methodsin its ability to preserve region shaperecognition cues, while still achieving high accuracy.

• Type: Conference
• Year: 1998
• Where: VISUALIZATION
• Authors: Donald H. House, Christopher J. Kocmoud
• Keywords: Algorithm Usesa Relaxation, Areasand Adjusting Region, Continuous Area Cartograms, Visualization, VISUALIZATION 1998