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McIDAS-V: Why it’s Based on VisAD and IDV

by Tom Whittaker University of Wisconsin-Madison SSEC/CIMSS Presentation at the 2007 McIDAS Users' Group Meeting October, 2007. McIDAS-V: Why it’s Based on VisAD and IDV. Background. Why a “new” McIDAS? Data volume and types 3+D visualizations Data integration Building block

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McIDAS-V: Why it’s Based on VisAD and IDV

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  1. by Tom Whittaker University of Wisconsin-Madison SSEC/CIMSS Presentation at the 2007 McIDAS Users' Group Meeting October, 2007 McIDAS-V: Why it’s Based on VisAD and IDV

  2. Background • Why a “new” McIDAS? • Data volume and types • 3+D visualizations • Data integration • Building block • What was considered • Update current version • Build on commercial package (IDL, Matlab, ??) • Build on freely available libraries • 3 Years and counting

  3. The Vision of McIDAS-V Scripting Interactive Mc-X Archives McIDAS-V ADDE Collaborations Other Data OPeNDAP Cluster

  4. What are VisAD and IDV? • Open source libraries developed to • Define a common, unified model of data • Provide basic display capabilities • A robust sample application (IDV) • Constantly evolving • Community input

  5. What is VisAD? • An open-source, pure Java library that: • Defines a common data model • Provides mechanisms for interacting with the data • A rich library for manipulations (matrix, numerical, etc) • Many file adapters • Mature after 7 years of development • Still being tweaked for performance

  6. What is the IDV? • Ongoing development by Unidata • A library developed on top of VisAD and other open-source packages to support interactive data selection and visualization • A “reference” application to test everything in the library • An extensible framework for developing rich applications (such as McIDAS-V) • Plug-in facility

  7. The Assumptions • Java will continue to evolve toward more efficient runtime environments • Java3D or JOGL will also • Community is vitally interested in seeing this development • There is enough funding to do it

  8. The Challenges (aka “Reality”) • More use of Macintosh machines when Java3D is not keeping up • Hyperspectral visualization and analysis needs are NOW! • Ever-evolving data formats • Funding is coming in slowly

  9. How it all fits together McIDAS-V VisAD IDV NetCDF XML etc. Java Runtime Environment Computer OS, Graphics, I/O, etc.

  10. Why you need this! • Enables easy integration of data from a variety of sources • Flexible displays – challenge to make new ones • Easy scripting • Aimed toward both research and operations • Supported by SSEC • Documentation • Testing and verification • Specialized code creation • Open source

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