Day 22 of 180 Days of Data Viz Learning #jfdi

I’m doing some form of data visualization learning for 180 days straight because I need to #JFDI.  See post explaining how and why I’m doing this.

Decomposition of a Visualization:

Company Performance: Tale of 100 Companies

  • What are the:
    • Variables (Data points, where they are, and how they’re represented):
      • Revenue on y-axis, year since founding on x-axis, yearly-revenue on line
    • Data Types (Quantitative, Qualitative, Categorical, Continuous, etc.):
      • Quantitative, Continuous
    • Encodings (Shape, Color, Position, etc.):
      •  Color Hue, Position
  • What works well here?
    • Using Color Hue for comparison to three types works extremely effectively on time series graph
  • What does not work well and what would I improve?
    • Auto-fill in search box would be a great additional feature
  • What is the data source?  Do I see any problems with how it’s cited/used?
    • Doesn’t list source, could be problematic depending on what financial reporting methodology was used in this data.  All of these companies are publicly-traded companies, so it wouldn’t be difficult to vary, but nonetheless a lack of citation.
  • Any other comments about what I learned?
    • Using these as a tools to learn how to be a Tableau power user.  Note to self to harvest these and learn to re-create them and then add my own creativity and strategy to my own work.

Reading and Learning Data Visualization Theoretically/Critically:

Visual Analysis Best Practices Simple Techniques for Making Every Data Visualization Useful and Beautiful

Three Takeways:

  • Place the most important view at the top of your dashboard, or in the upper left corner.
  • Although we do not recommend pie charts for part-to-whole relationship, we encourage the usage of pie charts on maps, such as in the website-traffic map.
  • Fonts for their readability and visual appeal:
    • Trebuchet MS or Verdana (especially for tables and numbers)
    • Arial
    • Georgia
    • Tahoma
    • Times New Roman
    • Lucida sans
  • In addition, Calibri and Cambria are suitable for tooltips (see below), but are not recommended for use in any other part of a visualization.
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