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stanford hci group / cs147 http://cs147.stanford.ed u 30 October 2008 Information Design Scott Klemmer
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Overview Perception and Information Visualization Collaboration
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Color: Edward Tufte IMAGE REMOVED
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Color: Edward Tufte IMAGE REMOVED
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Color (Java L&F) Six color semantic scheme Clean, consistent look Easy on eyes (mostly gray)
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How to get color right Design in grayscale first Keep luminance values from grayscale when moving to color
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Proportion and Scale Kevin Mullet and Darrell Sano, Designing Visual Interfaces
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“Pridefully Obvious Presentation”
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Marks of Typographic Style http://www.adobe.com/type/topics/info5. html Ligatures Upper and lower case numbers
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Proper Quotes Distinguishing open from close makes reading easier Tags in HTML have open and close, e.g., as opposed to |html| Spanish has open and close exclamation, question mark, e.g., ¡hay caramba!, ¿que pasa? Quotes “ ” have open and close too Quotes in HTML ““Left Double Quotation ””Right Double Quotation ‘ ‘Left Single Quotation ’ ’Right Single Quotation
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Some Starting Points Gather materials you find successful Could be from a very different domain “Good artists borrow, great artists steal” - Picasso Include visual design professionals in the iterative design cycle
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15 Challenger Disaster 1 of 13 pages of material faxed to NASA by Morton Thiokol
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16 Challenger Disaster 1 of 13 pages of material faxed to NASA by Morton Thiokol
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17 Challenger Disaster E. Tufte, pp. 46-47, Visual Explanations
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18 Challenger Disaster Redrawn by E. Tufte, p. 49, Visual Explanations
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19 Functions of visualizations Communicate information to others Make a point Tell a story Make decisions Support analysis and reasoning Answer a question “One image = One diagnosis” To explore and discover; encourage creativity Look at things in a new way “The purpose of computing is insight, not numbers” [R. Hamming] Inspire
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20 The Purpose of Data Visualization is to Help People Think and Communicate
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Basics of info. viz. Overview first Zoom and filter Details on command (Shneiderman)
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22 Gulfs of Execution & Evaluation Real world (Interactions) Conceptual model (Goals) Evaluation Execution Gulfs Norman 1986
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23 Gulf of Evaluation Real world: Conceptual model: x,y correlated? Evaluation Gulf
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24 Gulf of Evaluation Real world: Conceptual model: x,y correlated? Evaluation Gulf
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25 Gulf of Evaluation Real world: Conceptual model: x,y correlated? Evaluation Gulf = -.29
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26 Gulf of Execution Real world Conceptual model: Draw a rectangle Execution Gulf Move 90 30 Rotate 35 Pen down …
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27 Gulf of Execution Real world Execution Gulf Conceptual model: Draw a rectangle
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28 DataConceptual model Evaluation Execution Visualization Representation Manipulation Visualization userVisualization designer Visualization: A Double Gulf?
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29 Data Evaluation Representation x,y correlated? Visualization userVisualization designer Bad visualization?
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30 Data Evaluation Representation = -.29 x,y correlated? Visualization userVisualization designer Better Visualization?
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31 Route Maps Overlaid RouteSketched Route Agrawala and Stolte, Rendering Effective Route Maps, SIGGRAPH 2001 1.Find cognitive and perceptual principles 2.Optimize the visualization according to these principles
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32 Matthew Ericson, NY Times 2004 presidential election
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33 Matthew Ericson, NY Times 2004 presidential election
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34 2004 presidential election http://www-personal.umich.edu/~mejn/election/
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35 From Cartography, Dent
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36 From Cartography, Dent
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38 Phan et al. 2005
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39 Minard (1861)
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40 Dynamic Queries TimeSearcher: Hochheiser and Shneiderman 2001
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The Future: Collaboration Many Eyes 17 visualization types Anyone can upload a data set Anyone can create visualization
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