[QUANTITY] : Java Quantity Data Model package available
brian.thomas at gsfc.nasa.gov
Thu Aug 5 15:08:56 PDT 2004
Over the summer I have taken some time to put together a Java-based
package for the Quantity. The serialization, as you might expect, is in
XML, and it is capable of handling a great many different tentative
serializations for the Quantity.
The main package is "VO-QDM" (Virtual observatory Quantity Data Model)
and is built on top of a science-neutral Quantity package called "QML"
(Quantity Modeling Language). In order to get the vo-qdm package to
work, you will need to download and install the QML package as well.
I have made this easy, by dumping all of the products to a single directory
for easy access. Go to :
and you will find the various components there. Each distribution requires
ANT to built (directions for downloading and installation exist) and has
the option for building doxygen documentation as well. IF you don't want
to built the projects, the jar files are also in the above directory.
I have used this package to extend the Quantity to hold catalog and spectral
data (Simple spectral model). I hope to release mini-packages which build
upon the VO-QDM in the near future to illustrate further how the quantity
may be used.
Best regards to all,
* Dr. Brian Thomas
* Dept of Astronomy/University of Maryland-College Park
* Code 630.1/Goddard Space Flight Center-NASA
* fax: (301) 286-1775
* phone: (301) 286-6128 [GSFC]
(301) 405-2312 [UMD]
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