MATLAB and HDF-EOS

MATLAB and HDF-EOSThe MathWorks,

Inc.

Dr. Steven L. EddinsImage Processing Specialist

[email protected]

Copyright 1984 - 1998 by The MathWorks, Inc.

2MATLAB and HDF-EOS

Overview

The MathWorks, Inc. MATLAB MATLAB support for HDF-EOS Examples and demos


3MATLAB and HDF-EOS

The MathWorks, Inc. - The Company

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


4MATLAB and HDF-EOS

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


5MATLAB and HDF-EOS

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


6MATLAB and HDF-EOS

Aerospace Customers

Commercial - USAllied SignalBell HelicopterBoeingHarrisHoneywellLockheed/MartinNorthrop-GrummanPratt and WhitneyRaytheon Sys. Co.SikorskyTRW

InternationalAerospatialeAirbus ConsortiumAleniaBritish AerospaceCASADERAIAIMatraSagemSpar AerospaceSNECMA

GovernmentAir Force (US and others)Canadian Space AgencyDoDEuropean Space AgencyMinistry of DefNASA (all facilities)Navy (US and others)NSA


7MATLAB and HDF-EOS

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


8MATLAB and HDF-EOS

The MathWorks Products

ControlControl

Control SystemRobust ControlMu-AnalysisNonlinear ControlQuantitative FbackLMI ControlModel Predictive

Simulation& Code generation

Simulation& Code generation

SIMULINKStateflowReal-Time WorkshopFixed Point BlocksetRTW Ada Extension

Signal ProcessingSignal Processing

Signal ProcessingDSP BlocksetWaveletsCommunications

LanguageLanguage

MATLABMATLAB Compiler

SystemIdentification

SystemIdentification

System IDFrequency-Domain System ID

GeneralGeneral

OptimizationSpline Statistics Symbolic MathNAGDatabase

ApplicationsApplications

Image ProcessingMappingPower System Block SetFuzzy LogicFinancial ToolboxPartial Differential EqnsNeural Network

PartnersPartners

ADI (Beacon)dSPACE RTIVxWorks - Wind RiverSD/Fast - Symbolic DynamicsMaple V - Waterloo MapleSaber - AnalogyADAMS - MDIDADS - CADSITeamwork - CADRE


9MATLAB and HDF-EOS

MATLAB HDF-EOS support

There is a one-to-one correspondence between HDF-EOS API functions and MATLAB syntaxes.

Example:

Crid = GDdefboxregion(gid,cornerlon,cornerlat);

MATLABrid = hdfgd('defboxregion',gid,cornerlon,cornerlat);

HDF-EOS will be supported in MATLAB 5.3.


10MATLAB and HDF-EOS

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



What objects are in a file?

Sample functionsGRIDS 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'



What does an object contain?

Sample functionsGRIDINFO 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



What does an object contain?

ans =

FileName: 'asttahoe.eos'

SwathName: 'TIR_Band10'

DimensionName: {1x4 cell}

DimensionSize: {[11] [11] [688] [638]}

DimensionMap: {'GeoTrack/ImageLine' ...

DimensionMapOffset: {[0] [0]}

DimensionMapIncrement: {[69] [64]}

IndexMap: {0x1 cell}

IndexMapSize: {}

FieldName: {'ImageData' 'Latitude' ...

FieldRank: {[2] [2] [2]}

FieldSize: {[688 638] [11 11] [11 ...

...



MATLAB Demo: Point utilities



Where is the data located?

Sample functionsSHOWGRIDLOC Show Grid location on a world map.

SHOWSWATHLOC Show Swath location on a world map.

SHOWPOINTLOC Show Point location on a world map.

Code fragmentlat = hdfsw('readfield',swath_id, 'Latitude', ...

start,stride,edge);

Examples» showswathloc mop01day.eos

» showgridloc ssmi.eos



Where is the data located?



Extracting a Grid region

Sample functionsGRIDREGSIZE Size of Grid region.

GRIDREGEXTRACT Extract a Grid region.

GRIDEXAMPLE1 Display Grid region as image.

GRIDEXAMPLE2 Display Grid region as shaded lit relief

Code fragmentregion_id = hdfgd('defboxregion',grid_id,...

cornerlon,cornerlat);

Examples» gridexample1

» gridexample2



MATLAB demo: Grid utilities





Exporting to a SQL database

Code fragmentconn = database('BalloonDB','','');

…

leveldata1 = hdfpt('readlevel',point_id,0,... 'StationID,StationLat,StationLon',0:numrecords1-1);

…

insert(conn, 'Station', colnames, rows);

…

close(conn)

Example» balloondb



MATLAB demo: Database utilities



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-to-C translation)



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 ([email protected]) to inquire about receiving a beta or prerelease version.

MATLAB and HDF-EOS

Technology

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