For my recent project, I have to display county wise time series data of disease pattern in web map for the conterminous United States for 20 years. In addition, I have to use Google maps as base layer and should overlay images on the top of it. The concept sounds easy, and it was also similar with choropleth or thematic mapping. However, it should be in the Web 2.0.
I tried to figure out what are the possible ways to achieve this, I tried and few of them. Here I am going to share the pros and cons of these methods in a real quick and dirty style.
|Choropleth with GFT|
Easy, No understanding of computer programming needed. Upload small or large data sets from spreadsheets or CSV files. Visualize your data on maps, timelines and charts. Pick who can access your data; hide parts of your data if needed. Merge data from multiple tables.
Not much flexible and you can’t tweaks easily according to your needs.
|Choropleth with Cartographer.JS and Google API|
Pros: It generates choropleth maps directly from database or other standard data handlers. Fast for small area mapping.
|Choropleth with Polymaps|
Programming Knowledge is necessary.
|Choropleth with Geoserver and Openlayers|
Finally, I use Geoserver & Openlayes Map for my project.