Announcing DDI 1.0

• To: netcdfgroup@xxxxxxxxxxxxxxxx
• Subject: Announcing DDI 1.0
• From: Chris Anderson <u70177@xxxxxxxxxxxxx>
• Date: Fri, 29 Jul 1994 14:11:55 PDT

The Data and Dimensions Interface (DDI) addresses a significant 
problem in the visualization of large data sets: Extracting only the 
relevant data and providing it to a chosen graphics engine in the 
required form without undue effort.

DDI transfers data between files, formats and visualization systems. 
It works within the specifications of each supported format to promote 
compatibility. DDI provides the following capabilities:

   Browsing through the contents of DRS, NetCDF, and HDF files. 
   Randomly selecting data variables 
   Rearranging variables into the desired form 
   Modifying or creating new variable attributes 
   Saving variables into new files 
   Feeding variables directly to a visualization system 

DDI operates in two modes: 

   As a module in a data flow environment such as AVS or IRIS Explorer
    
   As a stand-alone application capable of sending data over the 
     network to AVS, IRIS Explorer, IDL, NCSA Collage, and PV-WAVE 

DDI is available for a number of computer systems via anonymous FTP 
from sas.nersc.gov in the directory /pub/DDI.

The Introduction to DDI and DDI Reference Manual are www accessible: 
http://www.nersc.gov/doc/Services/Applications/Graphics/DDI/DDI.html

DDI was developed as a collaboration between the Program for Climate 
Model Diagnosis and Intercomparison (PCMDI), and the National Energy 
Research Supercomputer Center (NERSC), both of Lawrence Livermore 
National Laboratory (LLNL). DDI was developed by Chris L. Anderson, 
Robert S. Drach, and Dean N. Williams.


For more information, contact:

Chris L. Anderson (andersonCL@xxxxxxxxx)
Dean N. Williams (williams@xxxxxxxxxxxxxxx)