qwt: Qwt (QT graphics extension) qwt: qwt: The Qwt library contains GUI Components and utility classes which are qwt: primarily useful for programs with a technical background. Beside a qwt: 2D plot widget it provides scales, sliders, dials, compasses qwt: thermometers, wheels and knobs to control or display values, arrays qwt: or ranges of type double. qwt: qwt: qwt: qwt: