### - i -

- IgnoreAllVerticesOnLevel : QwtRasterData
- IgnoreFooter : QwtPlotLayout
- IgnoreFrames : QwtPlotLayout , QwtPolarLayout
- IgnoreLegend : QwtPlotLayout , QwtPolarLayout
- IgnoreOutOfRange : QwtRasterData
- IgnoreScrollbars : QwtPlotLayout , QwtPolarLayout
- IgnoreTitle : QwtPlotLayout , QwtPolarLayout
- Image : QwtPainterCommand
- ImageBuffer : QwtPlotCurve
- ImageMode : QwtPlotSpectrogram
- ImmediatePaint : QwtPlotAbstractGLCanvas , QwtPlotCanvas
- IncludeBorders : QwtInterval
- IncludeReference : QwtScaleEngine
- Increasing : QwtPlotTradingCurve
- Indexed : QwtColorMap
- Invalid : QwtPainterCommand
- Inverted : QwtPlotCurve , QwtScaleEngine
- ItemBackground : QwtPlotLegendItem
- ItemFocusIndicator : QwtPlotAbstractCanvas