California's Century Of Growth

A Century of Growth is an interactive cartogram visualizing population increase inward California inward the 1 hundred years from 1900-2000. In fact the visualization includes half dozen unlike cartograms which present the population inward each Californian county every 20 years from 1900 to 2000.

This Leaflet based cartogram shows the population increase inward California past times changing the size of each county proportional to the county's population. If yous modify the yr on the map the counties modify size to present the population inward each county inward the selected year. When yous request a yr on the map the map sidebar besides updates to supply a brief explanation of the population changes inward California over the previous 20 years.

Influenza A virus subtype H5N1 Century of Growth besides includes a expert Definition of what a cartogram genuinely is. Jake has used a semi-contiguous cartogram inward his visualization of California's growing population. The USGS Cartogram Types provides expert definitions of contiguous, non-contiguous together with Dorling cartograms. This icon of the 3 unlike types of cartogram visualizing the population of California is besides a corking illustration of the divergence betwixt contiguous together with non-contiguous cartograms.


In a non-contiguous cartogram the enumeration units (in this instance California's counties) produce non accept to keep connectivity alongside each other. The counties tin grow or shrink inward size together with popular off along their geographical shape. In a non-contiguous cartogram the units popular off along their connections. This leads to the bubbling termination seen above, where the geographical sort of the counties teach distorted.

Jake has used a semi-contiguous cartogram. Because to a greater extent than or less large counties accept small-scale populations piece other geographically smaller counties accept much larger populations to a greater extent than or less of the connectivity betwixt the unlike counties is lost. The loss inward geographical sort is mitigated past times including a small-scale geographically right inset map. The colors of the counties on the cartogram together with the inset map check to aid the map user read the distorted cartogram. The user tin besides hover over counties on the map to persuasion its name.