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Slidingca
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We are all about memorable presentations, effective coaching and training.
We are all about memorable presentations, effective coaching and training.

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Lollipop Charts: “Who Loves You, Baby?” - If you were around in the ‘70s, you probably remember the hard-edged, bald-headed TV police detective named Kojak. He had a signature phrase—“Who loves you, baby?”—and a signature behavior—sucking a lollipop. The juxtaposition of a tough police detective engaged in the childish act of sucking a lollipop was entertaining. The same could be said of lollipop charts, but data visualization isn’t a joke (or shouldn’t be). “Lollipop Chart” is just cute na...

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What Is Data Visualization? - Since I founded Perceptual Edge in 2003, data visualization has transitioned from an obscure area of interest to a popular field of endeavor. As with many fields that experience rapid growth, the meaning and practice of data visualization have become muddled. Everyone has their own idea of its purpose and how it should be done. For me, data visualization has remained clear and consistent in meaning and purpose. Here’s a simple definition: Data visualization is ...

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We Never Think Alone: The Distribution of Human Knowledge - Only a small portion of the knowledge that humans have acquired resides in your head. Even the brightest of us is mostly ignorant. Despite this fact, we all suffer from the illusion that we know more than we actually do. We suffer from the “knowledge illusion,” in part, because we fail to draw accurate boundaries between the knowledge that we carry in our own heads and the knowledge that resides in the world around us and the minds...

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Can VR Enhance Data Visualization? - In addition to the growing hype about AI (artificial intelligence) and NLP (natural language processing) as enhancers of data visualization, VR (virtual reality) is now making the same erroneous claim. How does VR enhance data visualization? Here’s an answer that was recently given by Sony Green, the head of business development for a startup named Kineviz: For a lot of things, 2D is still the best solution. But VR offers a lot of advantages over existin...

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Do tooltips reduce the need for precision in graphs? - This blog entry was written by Nick Desbarats of Perceptual Edge. Should you include grid lines in your graph? If so, how many? Is it O.K. to add another variable to your graph by encoding it using size (for example, by varying the size of points in a scatterplot) or color intensity (for example, by representing lower values as a lighter shade of blue and higher ones as darker)? How small can you make your graph before it becomes proble...

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Prove It, If You Can - Despite the popular notion that we live in the Information Age, most organizations still base most of their decisions on gut instinct rather than information (i.e., evidence of what’s actually happening and what actually works). Intuition, based on true, hard-won expertise, has a role in organizational decision making, but many decisions, especially the most important decisions, should be rooted in evidence. In their excellent book, Hard Facts, Dangerous Half-Truths a...

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Confusion about Line Graphs - You might consider the way a humble and common line graph works to be obvious. If you learned to use them in the workplace, chances are that you think of line graphs as a conventional means to display one or more sets of time-series values. This is the graphical use of lines that typically bears the name “line graph.” Confusion is created, however, by the fact that lines can be used for various purposes in graphs. One common use is lines or curves of best fit, ...

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Edward Tufte on Data, Analysis, & Truth - Edward Tufte is a leading expert in the data analysis and data visualization space. His books are cl

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Pixar Studios Offers Free Storytelling Lessons Online - In cooperation with the Khan Academy, Pixar and Disney have been offering Pixar in a Box, an on-goin

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Bill Murray: How Art Can Change Your Life. - Bill Murray is a wonderful storyteller. A couple of years ago, I linked to this wonderful interview
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