Choosing the Right Chart Type:  

On Monday night, I attended our monthly Atlanta Business Intelligence user group meeting.  The speaker this month was the amazing Jen Underwood  (B | T) presenting on the topic of Data Visualization Best Practices.

As anybody who is familiar with building the presentation layer for a set of data knows, choosing the right method to represent that data can be the most challenging and important part of the entire process.

Whenever I am designing a new report, I will list my requirements and brainstorm a list of what I want to convey with the report.  Once I’ve determined what message is to be conveyed, I’ll sketch out mock reports on paper until I’ve gone through a few iterations and gotten an idea of what I’m going to implement.

During the process of sketching out a mock report, the topic of deciding what types of charts to use comes up.  In Jen’s presentation on Data Visualization Best Practices, she pointed out a very handy resource — a chart of charts by Andrew Abela, to help determine which type of chart to use and when:

A great resource to print out and decorate your office wall!

Another great resource is the Periodic Table of Visualization Methods by Ralph Lengler and Martin J. Eppler which is an interactive resource which shows an example of each visualization method by hovering the mouse over the “element.”

There are many more great resources out there, including many by “the Moses of Data Visualization,” Stephen Few which I’ll cover in future posts.  Happy charting!

Jen Underwood presenting Data Visualization Best Practices at the Atlanta Business Intelligence April Users Group.