das2 is the second-generation web-based data delivery, visualization,
and analysis system built and used by the radio and plasma wave group
at The University of Iowa. Data are transmitted to clients along
with software to manipulate and display the data.
|The first-generation das delivers data products
via gif images. Data product parameters are set with
html forms. A slideshow presentation
gives an outline of the old system, its shortcomings, and our
plans for its replacement.
|das2, now deployed, consists of several components.
Various Java libraries and client-side applications support
space science data visualization such as interactive
spectrograms, overlays, waveform plots, etc.
Distributed data servers and server-side applications
here at Iowa (and eventually at other sites) provide
self-describing data streams to the client applications.
are available at the
- Portable system runs on virtually any computer, using
freely-available Java Runtime Environment.
- Nearly installationless design.
- Client-side data operations: slicing, zooming, export
to digital file, publication-quality printing.
- Java 2D graphics library provides fully-rendered
graphics and fonts.
- Correlate data served from multiple sites.
|We answer questions raised during
past meetings and along the way.
"das ist good" -- Ian Dury and the Blockheads
Java and the
Java Coffee Cup Logo are trademarks or registered trademarks of Oracle
Corporation in the U.S. and other countries.