Data Analysis with MATLAB
© 2013 The MathWorks, Inc.1
Agenda
 Introduction
 Data analysis with MATLAB and Excel
 Break
 Developing applications with MATLAB
 Solving larger problems
 Summary
2
Modeling the Solar Ratio
𝑅𝑠 = 𝑎 (1 + 𝑏𝐻)(1 − 𝑒
Rs: Solar Ratio
H: Relative humidity
∆𝑇: TDailyMax – TDailyMin
a,b,c,n: Model coefficients
−𝑐 ∆𝑇 𝑛
)
extraterrestrial
radiation
Solar Ratio: How much of the incoming
light does the atmosphere let through.
total global
radiation
3
Demo: Solar Radiation Estimation

Goal:
– Estimate daily solar ratio given a weather forecast data.

Approach:
–
–
–
–
Process historical measurements
Develop and test predictive model
Document analysis in a report
Link analysis to Excel workbook
extraterrestrial
radiation
total global
radiation
– Extend analysis on multiple files
4
Approaches with Excel and MATLAB
Excel
MATLAB
5
Data Analysis Tasks
Access
Explore & Discover
Files
Data Analysis
& Modeling
Software
Algorithm
Development
Share
Reporting and
Documentation
Outputs for Design
Code & Applications
Hardware
Application
Development
Deployment
Automate
6
Agenda
 Introduction
 Data analysis with MATLAB and Excel
 Break
 Developing applications with MATLAB
 Solving larger problems
 Summary
7
Demo: Solar Radiation Estimation
Introduction to MATLAB

Goal:
– Estimate daily mean global solar radiation
given low cost and easily obtained measurements

Approach:
–
–
–
–
–
Process historical measurements
Develop and test predictive model
Document analysis in a report
Link analysis to Excel workbook
Extend analysis on multiple files
8
Demo: Estimate Solar Radiation
Access
Explore & Discover
Files
Data Analysis
& Modeling
Software
Algorithm
Development
Products Used




MATLAB
Spreadsheet Link EX
Statistics Toolbox
Curve Fitting Toolbox
Share
Reporting and
Documentation
Outputs for Design
Code & Applications
Hardware
Application
Development
Deployment
Automate
9
Accessing Data from MATLAB
Access

Explore & Discover
Share
Files
– Excel, text, or binary
– Audio and video, image
– Scientific formats and XML

Applications and languages
– C/C++, Java, FORTRAN
– COM, .NET, shared libraries
– Databases
(Database Toolbox)

Measurement hardware
– Data acquisition hardware
(Data Acquisition Toolbox)
– Stand-alone instruments and devices
(Instrument Control Toolbox)
10
Data Analysis and Visualization in MATLAB
Access

Explore & Discover
Share
Built-in engineering and
mathematical functions
– Interpolation, filtering,
smoothing, Fourier analysis

Extensive plotting capabilities
– 2-D, 3-D, and volume visualization
– Tools for creating custom plots
11
Expanding the Capabilities of MATLAB
Access

Explore & Discover
Share
MathWorks add-on tools for:
– Math, statistics, and optimization
– Control system design and analysis
– Signal processing and communications
– Image processing and computer vision
– Parallel computing and more…

Partner products provide:
– Additional interfaces
– Domain-specific analysis
– Support for niche applications
12
Sharing Results from MATLAB
Access

Explore & Discover
Share
Automatically generate reports
– Publish MATLAB files
– Customize reports using
MATLAB Report Generator

Package as an app

Deploy applications to
other environments
– Convert MATLAB code to HDL / C
13
Agenda
 Introduction
 Data analysis with MATLAB and Excel
 Break
 Developing applications with MATLAB
 Solving larger problems
 Summary
14
Agenda
 Introduction
 Data analysis with MATLAB and Excel
 Break
 Developing applications with MATLAB
 Solving larger problems
 Summary
15
Demo: Analysis of Solar Data
Building an Application

Goal
– Estimate daily mean global solar radiation
given low cost and easily obtained measurements

Approach
– Develop and test estimate using
historical data
– Modify analysis for reuse on
multiple data sets
– Build user-friendly app
– Create shareable standalone
component
16
Deploying Applications with MATLAB
Toolboxes
MATLAB
Desktop
1
End-User
Machine
MATLAB Compiler
2
3
.exe
17
Deploying Applications with MATLAB

Give MATLAB code
to other users
– MATLAB apps
– MATLAB files
MATLAB Compiler

Share applications
with end users who
do not need MATLAB
MATLAB
Builder EX
MATLAB
Builder JA
MATLAB
Builder NE
– Stand-alone
executables
– Shared libraries
– Software components

.exe
.dll
.lib
Excel
Java
Web
.NET
Royalty-free distribution
18
Demo: Application Development
Access
Explore & Discover
Files
Data Analysis
& Modeling
Software
Algorithm
Development
Products Used
 MATLAB
 Curve Fitting Toolbox
 MATLAB Compiler
Share
Reporting and
Documentation
Outputs for Design
Code & Applications
Hardware
Application
Development
Deployment
Automate
19
Agenda
 Introduction
 Data analysis with MATLAB and Excel
 Break
 Developing applications with MATLAB
 Solving larger problems
 Summary
20
Demo: Solar Radiation Estimation
Introduction to MATLAB

Goal:
– Estimate daily mean global solar radiation
given low cost and easily obtained measurements

Approach:
–
–
–
–
–
Process historical measurements
Develop and test predictive model
Document analysis in a report
Link analysis to Excel workbook
Extend analysis on multiple files
21
Independent Tasks or Iterations



Ideal problem for parallel computing
No dependencies or communications between tasks
Examples: parameter sweeps, Monte Carlo simulations
Time
Time
22
Agenda
 Introduction
 Data analysis with MATLAB and Excel
 Break
 Developing applications with MATLAB
 Solving larger problems
 Summary
23
MATLAB – A Platform for Data Analysis
Access
Explore & Discover
Files
Data Analysis
& Modeling
Software
Algorithm
Development
Share
Reporting and
Documentation
Outputs for Design
Code & Applications
Hardware
Application
Development
Deployment
Automate
24
© 2013 The MathWorks, Inc.
25