are primarily useful for programs with a technical background.
Beside a 2D plot widget it provides scales, sliders, dials, compasses,
thermometers, wheels and knobs to control or display values, arrays,
or ranges of type double.
WWW: http://qwt.sourceforge.net/
PR: ports/106487
Submitted by: Max Brazhnikov <makc at issp.ac.ru>
