Day 47 of 180 Days of Data Viz Learning #jfdi

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

Decomposition of a Visualization:

Power sources in each state

  • What are the:
    • Variables (Data points, where they are, and how they’re represented):
      • Years on x-axis and change from 2004 to 2014 on y-axis with line and angle
      • Color hue for different types of power sources
    • Data Types (Quantitative, Qualitative, Categorical, Continuous, etc.)
      • Quantitative, continuous
    • Encodings (Shape, Color, Position, etc.):
      • Angle, color hue, position
  • What works well here?
    • Good scaling and matrixed graphs with very clearly encoded differences
  • What does not work well and what would I improve?
    • Would like some context of what happened
  • What is the data source?  Do I see any problems with how it’s cited/used?
    • US Energy Information Administration
  • Any other comments about what I learned?
    • Great use of clarity and attractiveness for showing BI

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