  In simulations of (magnetized-)fluid dynamics in physics and astrophysics,
the visualization techniques are so frequently applied to analyse data that
they have become a fundamental part of the research. Data produced is often a
multi-dimensional set with several physical quantities, that are usually
complex to manage and analyse. JETGET is a visualization and analysis tool we
developed for accessing data stored in Hierarchical Data Format (HDF) and ASCII
files. Although JETGET has been optimized to handle data output from jet
simulations using the Zeus code from NCSA, it is also capable of analysing
other data output from simulations using other codes. JETGET can select
variables from the data files, render both two- and three-dimensional graphics
and analyse and plot important physical quantities. Graphics can be saved in
encapsulated Postscript, JPEG, VRML or saved into an MPEG for later
visualization and/or presentations. An example of use of JETGET in analysing a
3-dimensional simulation of jets emanating from accretion disks surrounding a
protostar is shown. The strength of JETGET in extracting the physics underlying
such phenomena is demonstrated as well as its capabilities in visualizing the
3-dimensional features of the simulated magneto-hydrodynamic jets. The JETGET
tool is written in Interactive Data Language (IDL) and uses a graphical user
interface to manipulate the data. The tool was developed on a LINUX platform
and can be run on any platform that supports IDL. JETGET can be downloaded
(including more information about its utilities) from
http://www.capca.ucalgary.ca/software.
