Here are the classes, structs, unions and interfaces with brief descriptions:
  QwtPolarCanvas | Canvas of a QwtPolarPlot |
| QwtPolarCurve | An item, that represents a series of points |
| QwtPolarFitter | A simple curve fitter for polar points |
| QwtPolarGrid | An item which draws scales and grid lines on a polar plot |
| QwtPolarItem | Base class for items on a polar plot |
| QwtPolarItemDict | A dictionary for polar plot items |
| QwtPolarLayout | Layout class for QwtPolarPlot |
| QwtPolarMagnifier | QwtPolarMagnifier provides zooming, by magnifying in steps |
| QwtPolarMarker | A class for drawing markers |
| QwtPolarPanner | QwtPolarPanner provides panning of a polar plot canvas |
| QwtPolarPlot | A plotting widget, displaying a polar coordinate system |
| QwtPolarPoint | A point in polar coordinates |
 QwtPolarSpectrogram | An item, which displays a spectrogram |
