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Data Visualization

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Which is bigger? Purple or Green?

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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 Data Visualization Outline

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Search on “Bad Visualizations”

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

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Visual Variables

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Which Types of Visualizations Better Help Convey Insights?

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Why Is This Graph Bad? Why Is This Graph Better? 3D Effect Patterns on Bars Rectangle Bars 2D Plot Minimum Ink – no axis lines Rectangle Bars Eliminated http://lilt.ilstu.edu/gmklass/pos138/datadisplay/sections/goodcharts.htm

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Which Types of Scatterplots Better Help Convey Data Reduction?

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Correlations

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

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Data Viz Software

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Data Visualization Software

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Easy to Use Complex Standard Steep Learning Curve BI Tools IBM SPSS Spotfire Cognos MicroStrategy Visualizations

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

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Survey: Data Miners

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Modeler Survey: Hackers, Modelers, Applications DataViz?

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Excel Bar Histogram Box / CI’s Line Scatter Pie

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

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In ggplot2 a plot is made up of layers ggplot2 Plot

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

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

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

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