Srirangan

As promised, releas­ing an Adobe Flex 3 com­po­nent for Choro­pleth Map. The Choro­pleth Map com­po­nent is an extension/implementation of my Map com­po­nent released earlier.

What is a Choro­pleth Map?
A choro­pleth map (Greek χωρα + πληθαίν:, (“area/region” + “mul­ti­ply”) is a the­matic map in which areas are shaded or pat­terned in pro­por­tion to the mea­sure­ment of the sta­tis­ti­cal vari­able being dis­played on the map, such as pop­u­la­tion den­sity or per-capita income.

The choro­pleth map pro­vides an easy way to visu­al­ize how a mea­sure­ment varies across a geo­graphic area or it shows the level of vari­able within a region. — Wikipedia

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The com­po­nent does just that. It plots a map and then applies a theme to the var­i­ous regions of the map. Rel­e­vant data and leg­end infor­ma­tion needs to be pro­vided to the com­po­nent. (See exam­ple attached below!)

The com­po­nent also pro­vides tooltips on spe­cific regions and pro­vides an “Active Leg­end” that lets you high­light and hide/unhide spe­cific regions of the map based on the data and legend.

Demo | Source code

Releas­ing a sim­ple, pow­er­ful and exten­si­ble Map com­po­nent devel­oped using Action­Script and Flex 3. The idea is that a map con­tains one or more poly­gons rep­re­sent­ing each sub-region. Each poly­gon can have mouse events attached to it and can have fur­ther prop­er­ties set. This con­cept is fur­ther extended in my sec­ond map com­po­nent i.e. the Choro­pleth Map that will be released later this week so stay tuned!

Demo | Source code