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Data Visualization

Data Visualization. Which is bigger? Purple or Green?. Data Visualization Outline. Data Presentation Academic Research Studies Traditional Types of Charts Bar, Pie, Line, Scatter, et al Number of Variables: 1, 2, 3, …. Multi-Dimensional / Interactive DataViz Data Visualization Software

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Data Visualization

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  1. Data Visualization

  2. Which is bigger? Purple or Green?

  3. Data Visualization Outline • Data Presentation • Academic Research Studies • Traditional Types of Charts • Bar, Pie, Line, Scatter, et al • Number of Variables: 1, 2, 3, …. • Multi-Dimensional / Interactive DataViz • Data Visualization Software • Ease of Use vs. Customization • Excel versus R • ggplot2 • Interactive

  4. Search on “Bad Visualizations”

  5. Which Types of Visualizations Better Help Convey Insights? Experiment: Using the same data create different charts, and see what insights people draw from them?

  6. Visual Variables

  7. Which Types of Visualizations Better Help Convey Insights?

  8. Why Is This Graph Bad? Why Is This Graph Better? http://lilt.ilstu.edu/gmklass/pos138/datadisplay/sections/goodcharts.htm

  9. Which Types of Scatterplots Better Help Convey Data Reduction?

  10. Correlations

  11. Emerging Types of Charts / DataViz • More Complex Formats • Interactive • Infographics • More Complex Data • Networks • Heatmaps • Parallel Coordinates Which Types of Visualizations Better Help Convey Insights?

  12. Exploratory Interactive Data Viz Software

  13. Data Visualization Software

  14. Data Visualization Software Steep Learning Curve Easy to Use BI Tools IBM SPSS Spotfire Cognos MicroStrategy Complex Standard Visualizations

  15. What software do you use for creating charts or data visualizations? BI Tools Spotfire Cognos MicroStrategy .net BIRT cytoscape flot gephi gnuplot graphite iDashboards Incanter Java JMP Ptotobi Silverlight splunk SSRS talend webGL Wijmo WPF Xcelcuis XLMiner LogiXML MDX Mondrian octave openlayers OpenViz PhP Powerpoint precog Prezi processing Javascript: Raphael Highcharts Arbor jfreecharts May, 2013 N=172

  16. Survey: Data Miners

  17. Survey: Hackers, Modelers, Applications Modeler DataViz?

  18. Excel • Bar • Histogram • Box / CI’s • Line • Scatter • Pie

  19. Grammar of Graphics Seven Components formations Legend Axes ggplot2 built using the grammar of graphics approach

  20. ggplot2 In ggplot2 a plot is made up of layers Pl o t

  21. Survey: BI Analysts and Data Scientist November, 2011 Built for Data and Programming

  22. BI Software: Tableau http://public.tableausoftware.com/views/PapelbonPitchFX/PapelbonPitchFX

  23. http://bl.ocks.org/mbostock/1256572

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