Qwt TODO list

Ideas
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- Improve Documention
- QAbstractModel -> QwtSeriesData
- Box/Whisker plot item
- QwtSeriesData + functors
- QwtSeriesData/QwtPlotCurve + Level of details (Douglas Peucker)
- Common zoom stack for all navigation objects
- Watermark Item
- Contour algorithm for vectors: http://apptree.net/conrec.htm
- QwtPlotCanvas rendered via FBO, PBO
- Time/Date scale engine
- TeX texts
- Grid of QwtPlots
- Interval scale labels ( between 2 ticks )
- More than 4 axes
- QwtIntervalSymbol + QPainterPath/...
- QwtPlotScene + breaking composite architecture
- Using QStaticText for markers ( and scales ? )
- Scales/Grid item like in QwtPolarGrid
- Container for a 2D matrix
- Waterfall plots
- transform/invTransform for polygons and lines
- cursor item
- line marker with a line from the position to the axis
- quadtree
- QwtText supporting Qt::TextElideMode
- Multitouch events
- QwtKnob/QwtDial fixed contents size mode
- controls ( f.e QwtWheel ) with a very dark palette

Bugs/Change requests
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- Remove QwtScaleTransformation::copy()
- Reference value for QwtThermo
- Transparent canvas background + backingstore
