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jhcarrell

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Posts: 17
Reply with quote  #1 
Here's another example of a poorly designed chart by George Campbell, Emeritus Faculty, Security Executive Council and author of "Measures and Metrics in Corporate Security".

BarGraphForTimeSeries.png 
It's almost difficult to even know where to begin with this masterpiece, but here goes.

Based on the title of the chart, my understanding is we want to how the number of events trend from year-to-year.  It is unclear whether this is calculated from the previous year or from a base year (e.g. 2008).

Formatting - The gridlines are more of a distraction than visual aid. (remove or at a minimum de-emphasize)  The color palate is unbalanced and unattractive.  It will likely be hard to read by anyone suffering from red-green color blindness.

Sort Order - Using a descending sort order based on time is counter-intuitive.

Chart Selection - A horizontal bar chart with a date/time parameter doesn't read well. (use a vertical bar chart or line chart based on your objective)


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"In the realm of data visualization, we face many challenges that are worth pursuing. Creating an effective radial gauge is not one of them. It is a fool’s errand. Do I strike you as a fool?" - Stephen Few
jhcarrell

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Posts: 17
Reply with quote  #2 

Here are a few alternatives that might be considered (some of them more effective than others) ...

BarGraphForTimeSeries1.png 



BarGraphForTimeSeries2.png 


BarGraphForTimeSeries3.png 

BarGraphForTimeSeries4.png 






__________________
"In the realm of data visualization, we face many challenges that are worth pursuing. Creating an effective radial gauge is not one of them. It is a fool’s errand. Do I strike you as a fool?" - Stephen Few
danz

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Posts: 181
Reply with quote  #3 
For me it is clear the lack of knowledge of George Campbell in visualization field, but I don't think is a good idea to exagerate presenting too much of his work here.

I would design five side by side line graphs sharing the same quantitative axis showing the values evolution over 5 years, one for each indicator.

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