SOUTHERN CALIFORNIA EDISON® Leading the Way in Electricity Data Visualization using R Audit...
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Transcript of SOUTHERN CALIFORNIA EDISON® Leading the Way in Electricity Data Visualization using R Audit...
SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Data Visualization using R
Audit Technology GroupMar 22th, 2013
SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
DV in the News – Gun Owners Put on Map
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SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
DV in the News – Gun Owners Retaliated
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SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
DV in the News – Home Ownership
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SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
What is R?
• From Wikipedia– R is an open source programming language and
software environment for statistical computing and graphics.
– The R language is widely used among statisticians for developing statistical software and data analysis.
– R is an implementation of the S programming language created by John Chambers while at Bell Labs.
– R was created by Ross Ihaka and Robert Gentleman at the University of Auckland, New Zealand.
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SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
More about R
• Some interesting facts– R is now developed by the R Development Core Team, of which
Chambers is a member
– R is named partly after the first names of the first two R authors (Robert Gentleman and Ross Ihaka), and partly as a play on the name of S.
– R is part of the GNU project. The source code for the R software environment is written primarily in C, Fortran, and R.
– R is freely available under the GNU General Public License, and pre-compiled binary versions are provided for various operating systems.
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SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
What should R Concern me as an Auditor?
• Good question!– R uses a command line interface; however, several
graphical user interfaces are available for use with R.
– R provides a wide variety of statistical and graphical techniques, including linear and nonlinear modeling, classical statistical tests, time-series analysis, classification, clustering, and others.
– According to Rexer's Annual Data Miner Survey in 2010, R has become the data mining tool used by more data miners (43%) than any other.
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SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
More Importantly
• Last but not least– Another strength of R is static graphics, which can
produce publication-quality graphs, including mathematical symbols. Dynamic and interactive graphics are available through additional packages.
– In other words, if you are serious about data visualization, using only Excel graphing features is not enough.
– At the end of the day, it is FREE! All you need is filing a deviation form with your supervisor’s approval, and some weekends spent in front of your computer screen.
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SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
R Heat Map is Perfect for Risk Analysis
• Heat Map is a very useful tool for Risk Analysis
• But Excel does not have built-in Heat Map feature
• You can mimic a Heat Map in Excel using Bubble Chart but it is a labor intensive process with less than satisfactory result
• Or you can learn a little VBA and write your own code to create Heat Maps in Excel, once again, not a completely painless proposition
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SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
Heat Map: Correlation Between Genes
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SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
Heat Map: NBA Top Scorers
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SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
Calendar Heat Map: Stock Close Price
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SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
Heat Map: Pollution Data on Calendar
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SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
Showing Data on US Map by State
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SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
Graphing Rainfall in France
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SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
Topology Graph
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SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
Topography Graph with Height
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SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
Data Visualization in Action 1
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SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
Data Visualization in Action 2
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SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
Interactive Graph – U.S. Data by State
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SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
Interactive Graph – Hurricane Andrew
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SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
Interactive Graph – U.S. City Popularity
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SOUTHERN CALIFORNIA EDISON®
Leading the Way in Electricity
Audit Services & Audit Technology Group
Q&A
• Question?
• Comments?
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