Global Data Visualization Tool
Senior Project: 1990-1991
Ethan Alpert, Kevin DeVries, Mark Kessel and Alexander Waterman
One of the purposes of the Scientific Visualization Group (SVG) of NCAR is to
provide scientists with means to visualize their scientific data in various
forms. In particular, scientists often need to display weather data on top of
maps. There exist libraries of routines that allow for the management of
scientific data files, the creation and display of maps in various projections,
and for the display of weather data (e.g. in the form of contours) on top of
these maps. However, these libraries require the scientist to write a program,
typically in FORTRAN, to use the various libraries to accomplish the task. The
project developed by the students provides an interactive, quick-look
capability for scientific data and map information. As an example, a scientist
may select a file of data from a menu, select a map projection type, and have
the system create a color visual of the data. The project was implemented in C
to run on UNIX workstations, using the X Window System. It also used netCDF
(Network Common Data Form) for the management of data, NCAR Graphics for the
generation of maps and contours, and ctrans (a project developed by a previous
senior project team) for the display of the resulting computer graphics
metafile.
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