Q122: SIGMA - System for Interactive Graphical Mathematical Applications

Author(s): C. Vandoni	Library: PAWLIB
Submitter:	Submitted: 14.11.1988
Language: Fortran	Revised:

SIGMA can be considered a system for interactive on-line numerical analysis problem-solving which has been designed essentially for mathematicians and theoretical physicists. The major characteristics of SIGMA are:

• The basic data units are scalars, one-dimensional arrays, and multi-dimensional rectangular arrays; SIGMA provides automatic handling of these arrays.
• The calculational operators of SIGMA closely resembles the operations of numerical mathematics; procedural operators are often analogous to those of Fortran.
• The system is designed to be used in interactive mode; it provides convenient facilities for graphical display of arrays in form of (sets of) curves.
• The user can construct his own programs within the system and has also access to a program library; he can store and retrieve his data and programs; he obtains on request hard copy of alphanumeric and graphical type.

SIGMA was operational for many years on the CYBER computers at CERN. Most of its functionality has been converted to run on other machines as part of the PAW (Q121) package.

Usage:

See Chapter 6 of the PAW Manual.