Data Visualization - Basics

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1 Data Visualization - Basics

2 The Visualization Process ACQUIRE PARSE FILTER MINE REPRESENT REFINE INTERACT

3 Sales Data (US $ in thousands) Region Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Domestic International

4 Sales Data (US $ in thousands) Region Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Domestic International Sales US $ (in thousands) Domestic International 0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

5 Causes of Deaths in US in 2007 Cause of Death Deaths per year % Heart Disease Cancer Stroke Chronic Lower Respiratory Diseases Accidents Alzheimer's Disease Diabetes Influenza and Pneumonia Nephritis and Nephrosis Septicemia Other Causes Totals

6 Causes of Deaths in US in 2007 Total Deaths in America by Cause Cause of Death Deaths per year % Heart Disease Cancer Stroke Chronic Lower Respiratory Diseases Accidents Alzheimer's Disease Diabetes Influenza and Pneumonia Nephritis and Nephrosis Septicemia Other Causes Totals Heart Disease Cancer Stroke Chronic Lower Respiratory Diseases Accidents Alzheimer's Disease Diabetes Influenza and Pneumonia Nephritis and Nephrosis Septicemia Other Causes

7 Causes of Deaths in US in 2007 Total Deaths in America by Cause Criteria for effectiveness Clearly indicates the nature of the relationship? Represents the quantities accurately? Makes it easy to compare quantities? Makes it easy to see ranked order of values? Makes obvious how people should use the information? Heart Disease Cancer Stroke Chronic Lower Respiratory Diseases Accidents Alzheimer's Disease Diabetes Influenza and Pneumonia Nephritis and Nephrosis Septicemia Other Causes

8 Causes of Deaths in US in 2007 Total Deaths in America by Cause Criteria for effectiveness Clearly indicates the nature of the relationship? Yes Represents the quantities accurately? No Makes it easy to compare quantities? No Makes it easy to see ranked order of values? No Makes obvious how people should use the information? Partially Heart Disease Cancer Stroke Chronic Lower Respiratory Diseases Accidents Alzheimer's Disease Diabetes Influenza and Pneumonia Nephritis and Nephrosis Septicemia Other Causes

9 3-D Pie Charts The Worst! 10/30/16 9

10 Causes of Deaths in US in 2007 Cause of Death Deaths per year % Heart Disease Cancer Total Deaths in America by Cause in 2007 Other Causes Stroke Septicemia 1.44 Chronic Lower Respiratory Diseases Accidents Alzheimer's Disease Diabetes Nephritis and Nephrosis Influenza and Pneumonia Diabetes Alzheimer's Disease Accidents Influenza and Pneumonia Chronic Lower Respiratory Diseases 5.28 Nephritis and Nephrosis Stroke 5.61 Septicemia Other Causes Totals Cancer Heart Disease

11 Causes of Deaths in US in 2007 Criteria for effectiveness Clearly indicates the nature of the relationship? Represents the quantities accurately? Makes it easy to compare quantities? Makes it easy to see ranked order of values? Makes obvious how people should use the information? Total Deaths in America by Cause in 2007 Other Causes Septicemia 1.44 Nephritis and Nephrosis 1.92 Influenza and Pneumonia 2.18 Diabetes 2.95 Alzheimer's Disease 3.08 Accidents 5.10 Chronic Lower Respiratory Diseases 5.28 Stroke 5.61 Cancer Heart Disease

12 Causes of Deaths in US in 2007 Criteria for effectiveness Clearly indicates the nature of the relationship? Yes Represents the quantities accurately? Yes Makes it easy to compare quantities? Yes Makes it easy to see ranked order of values? Yes Makes obvious how people should use the information? Yes Total Deaths in America by Cause in 2007 Other Causes Septicemia 1.44 Nephritis and Nephrosis 1.92 Influenza and Pneumonia 2.18 Diabetes 2.95 Alzheimer's Disease 3.08 Accidents 5.10 Chronic Lower Respiratory Diseases 5.28 Stroke 5.61 Cancer Heart Disease

13 Accuracy Ranking of Basic Charts From: Graphical Perception: Theory, Experimentation, and Application to the Development of Graphical Methods William S. Cleveland; Robert McGill, Journal of the American Statistical Association, Vol. 79, No (Sep., 1984), pp

14 % Births by Day of Week

15 Top Medals in Olympics by Country ( ) Country United States of America People's Republic of China Russian Federation Great Britain Australia Germany France Republic of Korea Japan Italy

16 Top Medals in Olympics by Country ( ) Olympics Medals Tally United States of America People's Republic of China Russian Federation Great Britain Australia Germany France Republic of Korea Japan Italy

17 Top Medals in Olympics by Country ( ) Olympics Medals Tally Focus on Russia China Great Britain Germany United States of America People's Republic of China Russian Federation Great Britain Australia Germany France Republic of Korea Japan Italy

18 Top Medals in Olympics by Country ( ) Country United States of America People's Republic of China Russian Federation Great Britain Australia Germany France Republic of Korea Japan Italy 19 28

19 Mapping Numbers 10/30/16 19

20 Mapping Numbers: Heat Map 10/30/16 Permeating Data Visualization in CS Courses 20

21 Proportional Symbols 10/30/16 21

23 UZ Zip Codes + Lat & Long Data Bryn Mawr, PA Cheltenham, PA Chester, PA Aston, PA Brookhaven, PA

28 Data Visualization - Horizons

Global Trade in Lightweight Coated Writing Paper TradeData International Pty Ltd (www.tradedata.net) Page 1 5/18/2015

Global Trade in Lightweight Coated Writing Paper TradeData International Pty Ltd (www.tradedata.net) Page 1 5/18/2015 Page 1 5/18/2015 An Analysis of Global Trade in Lightweight paper, coated with inorganic substances, used for writing etc., of which more than 10% by weight of total fibre content consists of fibres obtained