Robert Kosara

  • New Video: The Science of Pie Charts

    New Video: The Science of Pie Charts

    The common explanation for how pie charts work is that we read them by angle. That of course would mean that donut charts would be bad, because you can’t see the angle when you take away the center of the pie. Changing the radius of a slice wouldn’t matter though, because that doesn’t change the […]


  • Paper: From Jam Session to Recital: Synchronous Communication and Collaboration Around Data in Organizations

    Paper: From Jam Session to Recital: Synchronous Communication and Collaboration Around Data in Organizations

    Who are the people who use data and visualization as part of their work every day? In particular, how do people use data as part of meetings, to present to others, to discuss their findings and recommendations, etc.? My colleague Matt Brehmer and I ran a pair of studies to find out.


  • EagerEyes Turns 15

    EagerEyes Turns 15

    EagerEyes is 15 years old today! Rather than look back at 15 years of visualization and blogging (though I will do a little of that too), I want to reflect a bit on what blogging means today and where things are going.