pictogram

99 posts
What is a bad chart?

In the recent issue of Madolyn Smith’s Conversations with Data newsletter hosted by DataJournalism.com, she discusses “bad charts,” featuring submissions from several dataviz bloggers, including myself. What is a “bad chart”? Based on this collection of curated "bad charts", it is not easy to nail down “bad-ness”. The common theme is the mismatch between the message intended by the designer and the message received by the reader, a classic error...

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Inspiration from a waterfall of pie charts: illustrating hierarchies

Reader Antonio R. forwarded a tweet about the following "waterfall of pie charts" to me: Maarten Lamberts loved these charts (source: here). I am immediately attracted to the visual thinking behind this chart. The data are presented in a hierarchy with three levels. The levels are nested in the sense that the pieces in each pie chart add up to 100%. From the first level to the second, the category...

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A second take on the rural-urban election chart

Yesterday, I looked at the following pictograms used by Business Insider in an article about the rural-urban divide in American politics: The layout of this diagram suggests that the comparison of 2010 to 2018 is a key purpose. The following alternate directly plots the change between 2010 and 2018, reducing the number of plots from 4 to 2. The 2018 results are emphasized. Then, for each party, there can be...

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Another experiment with enhanced pictogram

In a previous post, I experimented with an idea around enhancing pictograms. These are extremely popular charts used to show countable objects. I found another example in Business Insider's analysis of the mid-term election results. Here is an excerpt of a pair of pictograms that show the relative performance of Republicans and Democrats in districts that are classified as "Pure Rural" or "Rural-Suburban": (Note that there is an error in...

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