How to Transform a Table of Data into a Chart: Four Charts with Four Different Stories

Jul 18th, 2017 / Data Visualization
A few weeks ago I gave the keynote speech at the Alabama Power Foundation’s Elevate conference for several hundred of their grantees and partners. What a day! As part of the most-practical-keynote-you’ve-ever-heard emphasis, we included makeovers from the grantees’ real projects. In case it’s useful for my blog readers, I’m sharing one of those makeovers with you today.
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Removing the Double Y Axis

Oct 19th, 2016 / Data Visualization
One of my least favorite charts of all time include line charts with two y axes. Sometimes we need to compare two different variables with two different units, like the total grants awarded by an agency (dollars) compared to the number of different projects that they supported (number of projects). So how do you remove the double y axis?
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One Dataset, Five Line Charts

Dec 15th, 2015 / Data Visualization
I recently partnered with a group of public health researchers. We were brainstorming different ways to display the number of new HIV infections in each subgroup and as always, there are several correct ways to display these numbers.
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