HDF AND HDF-EOS WORKSHOP II (1998) Source: http://hdfeos.org/workshops/ws02/presentations/eddins/eddins.ppt

1. The MathWorks, Inc.
MATLAB and HDF-EOS
Dr. Steven L. Eddins
Image Processing Specialist
eddins@mathworks.com

2. MATLAB and HDF-EOS
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Overview
 The MathWorks, Inc.
 MATLAB
 MATLAB support for HDF-EOS
 Examples and demos
Copyright © 1984 - 1998 by The MathWorks, Inc.

3. MATLAB and HDF-EOS
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The MathWorks, Inc. - The Company
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Founded in 1984, privately held
Based in Natick, Massachusetts
475 employees (150+ Developers)
Annual growth > 30%
Founders still active -- Jack Little, Cleve Moler,
and Steve Bangert
Copyright © 1984 - 1998 by The MathWorks, Inc.

4. MATLAB and HDF-EOS
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MATLAB
 MATLAB is the leading computational software for
 Product design and development
 Research in industry and academia
 Technical education
 Over 400,000 MATLAB users worldwide
 Used in over 100 countries
Copyright © 1984 - 1998 by The MathWorks, Inc.

5. MATLAB and HDF-EOS
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 MATLAB is an integrated technical computing
environment. Its capabilities include:
 Mathematical computation
 Graphics and visualization
 Data analysis
 Algorithm development
 Simulation and modeling
 Programming and application development
 “For the purposes of an engineer or scientist,
MATLAB has the most features and is the best
developed program in its class.” -IEEE Spectrum,
Software Review, February 1997
Copyright © 1984 - 1998 by The MathWorks, Inc.

6. MATLAB and HDF-EOS
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Aerospace Customers
Government
Air Force (US and
others)
Canadian Space
Agency
DoD
European Space
Agency
Ministry of Def
NASA (all facilities)
Navy (US and others)
NSA
Commercial - US
Allied Signal
Bell Helicopter
Boeing
Harris
Honeywell
Lockheed/Martin
Northrop-Grumman
Pratt and Whitney
Raytheon Sys. Co.
Sikorsky
TRW
International
Aerospatiale
Airbus Consortium
Alenia
British Aerospace
CASA
DERA
IAI
Matra
Sagem
Spar Aerospace
SNECMA
Copyright © 1984 - 1998 by The MathWorks, Inc.

7. MATLAB and HDF-EOS
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Notable Projects Using MATLAB
 Space Maneuvering Vehicle
 Deep Space Probe
 International Space Station
 Next Generation Space Telescope
 “I have been amazed at how MATLAB can boost
one’s productivity. Anything from simple analysis to
complex modeling and simulation can be done in a
fraction of the time it would take to write your own
code.”
 Gregory E. Chamitoff, Ph.D.
NASA, Johnson Space Center
Copyright © 1984 - 1998 by The MathWorks, Inc.

8. MATLAB and HDF-EOS
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The MathWorks Products
Language
Language
MATLAB
MATLAB Compiler
General
General
Optimization
Spline
Statistics
Symbolic Math
NAG
Database
System
System
Identification
Identification
System ID
Frequency-Domain
System ID
Control
Control
Control System
Robust Control
Mu-Analysis
Nonlinear
Control
Quantitative
Fback
LMI Control
Model Predictive
Applications
Applications
Image Processing
Mapping
Power System Block Set
Fuzzy Logic
Financial Toolbox
Partial Differential Eqns
Neural Network
Simulation
Simulation
& Code generation
& Code generation
SIMULINK
Stateflow
Real-Time Workshop
Fixed Point Blockset
RTW Ada Extension
Signal Processing
Signal Processing
Signal Processing
DSP Blockset
Wavelets
Communications
Partners
Partners
ADI (Beacon)
dSPACE RTI
VxWorks - Wind River
SD/Fast - Symbolic Dynamics
Maple V - Waterloo Maple
Saber - Analogy
ADAMS - MDI
DADS - CADSI
Teamwork -- CADRE MathWorks, Inc.
Copyright © 1984 1998 by The

9. MATLAB and HDF-EOS
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MATLAB HDF-EOS support
 There is a one-to-one correspondence between
HDF-EOS API functions and MATLAB syntaxes.
 Example:
C
rid = GDdefboxregion(gid,cornerlon,cornerlat);
 MATLAB
rid = hdfgd('defboxregion',gid,cornerlon,cornerlat);
 HDF-EOS will be supported in MATLAB 5.3.
Copyright © 1984 - 1998 by The MathWorks, Inc.

10. MATLAB and HDF-EOS
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Examples
15 sample HDF-EOS utilities:
 What objects are in a file?
 What does an object contain?
 Where is the data located?
 Extracting a Grid region
 Exporting to a SQL database
Copyright © 1984 - 1998 by The MathWorks, Inc.

11. MATLAB and HDF-EOS
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What objects are in a file?
 Sample functions
GRIDS Names of Grid objects in an HDF-EOS file.
SWATHS Names of Swath objects in an HDF-EOS file.
POINTS Names of Point objects in an HDF-EOS file.
 Code fragment
[ngrids,gridlist] = hdfgd('inqgrid',filename);
 Example
» grids dem30arc.eos
ans =
'demGRID'
'qualityGRID'
Copyright © 1984 - 1998 by The MathWorks, Inc.

12. MATLAB and HDF-EOS
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What does an object contain?
 Sample functions
GRIDINFO Information about a Grid object.
SWATHINFO Information about a Swath object.
POINTINFO Information about a Point object.
 Code fragment
fv = hdfsw('getfillvalue',swath_id,fieldname);
 Example
» swathinfo asttahoe.eos TIR_Band10
Copyright © 1984 - 1998 by The MathWorks, Inc.

13. MATLAB and HDF-EOS
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What does an object contain?
ans =
FileName:
SwathName:
DimensionName:
DimensionSize:
DimensionMap:
DimensionMapOffset:
DimensionMapIncrement:
IndexMap:
IndexMapSize:
FieldName:
FieldRank:
FieldSize:
...
'asttahoe.eos'
'TIR_Band10'
{1x4 cell}
{[11] [11] [688] [638]}
{'GeoTrack/ImageLine' ...
{[0] [0]}
{[69] [64]}
{0x1 cell}
{}
{'ImageData' 'Latitude' ...
{[2] [2] [2]}
{[688 638] [11 11] [11 ...
Copyright © 1984 - 1998 by The MathWorks, Inc.

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MATLAB Demo: Point utilities
Copyright © 1984 - 1998 by The MathWorks, Inc.

15. MATLAB and HDF-EOS
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Where is the data located?
 Sample functions
SHOWGRIDLOC Show Grid location on a world map.
SHOWSWATHLOC Show Swath location on a world map.
SHOWPOINTLOC Show Point location on a world map.
 Code fragment
lat = hdfsw('readfield',swath_id, 'Latitude', ...
start,stride,edge);
 Examples
» showswathloc mop01day.eos
» showgridloc ssmi.eos
Copyright © 1984 - 1998 by The MathWorks, Inc.

16. MATLAB and HDF-EOS
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Where is the data located?
Copyright © 1984 - 1998 by The MathWorks, Inc.

17. MATLAB and HDF-EOS
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Extracting a Grid region
 Sample functions
GRIDREGSIZE
GRIDREGEXTRACT
GRIDEXAMPLE1
GRIDEXAMPLE2
relief
Size of
Extract
Display
Display
Grid region.
a Grid region.
Grid region as image.
Grid region as shaded lit
 Code fragment
region_id = hdfgd('defboxregion',grid_id,...
cornerlon,cornerlat);
 Examples
» gridexample1
» gridexample2
Copyright © 1984 - 1998 by The MathWorks, Inc.

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MATLAB demo: Grid utilities
Copyright © 1984 - 1998 by The MathWorks, Inc.

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Copyright © 1984 - 1998 by The MathWorks, Inc.

20. MATLAB and HDF-EOS
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Exporting to a SQL database
 Code fragment
conn = database('BalloonDB','','');
…
leveldata1 = hdfpt('readlevel',point_id,0,...
'StationID,StationLat,StationLon',0:numrecords1-1);
…
insert(conn, 'Station', colnames, rows);
…
close(conn)
 Example
» balloondb
Copyright © 1984 - 1998 by The MathWorks, Inc.

21. MATLAB and HDF-EOS
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MATLAB demo: Database utilities
Copyright © 1984 - 1998 by The MathWorks, Inc.

22. MATLAB and HDF-EOS
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Application Development
Rapid prototyping
 Mathematics
 Data analysis
 Graphics & visualization
 Rich, interactive
language
 Many domain-specific
products (e.g, image
processing, fuzzy logic,
neural networks,
wavelets, control, …)
 HDF-EOS support
Application deployment
 Multiplatform GUI tools
 Runtime server
 MATLAB compiler
(automatic MATLAB-toC translation)
Copyright © 1984 - 1998 by The MathWorks, Inc.

23. MATLAB and HDF-EOS
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Summary
 The power of MATLAB’s mathematics,
graphics, data analysis, algorithm
development, and application
development, combined with the
complete HDF-EOS API.
 No-hassle interpreted environment; no
libraries or program compilation to worry
about
 HDF-EOS functionality to be available in
MATLAB 5.3; contact Steve Eddins
(eddins@mathworks.com) to inquire
about receiving a beta or prerelease
version.
Copyright © 1984 - 1998 by The MathWorks, Inc.