Here are the classes, structs, unions and interfaces with brief descriptions:
[detail level 12]
  _traceback | |
| AddWidgetTool | |
| Anova | ANOVA |
| AnovaDialog | Filter options dialog |
| ApplicationWindow | QtiPlot's main window |
| ArrowMarker | Draws lines and arrows on a QwtPlot |
| AssociationsDialog | Plot associations dialog |
| AxesDialog | General plot options dialog |
| Bar | 3D bars (modifed enrichment from QwtPlot3D) |
| BaselineDialog | Subtract baseline dialog |
| BaselineTool | Plot tool for selecting and moving individual points of a baseline curve |
| BoxCurve | Box curve |
| CanvasPicker | Handles parts of the user interaction for a Plot by registering itself as an event filter for its QwtPlotCanvas |
| ChiSquareTest | Chi-Square test for variance |
| CollapsiveGroupBox | A collapsive QGroupBox |
| ColorBox | A modified QComboBox used for color selection |
| ColorButton | A customized QtColorPicker used for color selection |
| ColorMapDialog | |
| ColorMapEditor | A complex widget allowing to customize a QwtLinearColorMap |
| ColorMapPreviewDialog | |
| ColorPickerButton | |
| ColorPickerItem | |
| ColorPickerPopup | |
| Cone3D | 3D cone class (based on QwtPlot3D) |
| ConfigDialog | Preferences dialog |
| ConstFunction | Class for constant z surfaces |
| ContourLinesEditor | A complex widget allowing to customize contour line plots |
| Convolution | |
| Correlation | |
| CreateBinMatrixDialog | 2D Binning matrix dialog |
| CurveLayout | Structure containing curve layout parameters |
| CurveRangeDialog | Curve range dialog |
| CurvesDialog | Add/remove curves dialog |
| CurveTreeItem | CurveTreeItem tree widget item class |
| CustomActionDialog | |
| CustomActionHandler | |
| CustomMenuHandler | |
 DataCurve | |
| DataPickerTool | Plot tool for selecting, moving or removing individual points of a curve |
| Deconvolution | |
| Differentiation | |
| DoubleSpinBox | A QDoubleSpinBox allowing to customize numbers display with respect to locale settings |
| DrawPointTool | |
| EllipseWidget | |
| EmptySourceError | |
| EnrichmentDialog | |
| ErrDialog | Add error bars dialog |
| ErrorBarsCurve | Error bars curve |
| ExcelFileConverter | |
| ExpDecayDialog | Fit exponential decay dialog |
| ExponentialFit | |
| ExportDialog | Export ASCII dialog |
| ExtensibleFileDialog | QFileDialog plus generic extension support |
| ExtractDataDialog | Set column values dialog |
| FFT | |
| FFTDialog | Fast Fourier transform options dialog |
| FFTFilter | |
| Filter | Abstract base class for data analysis operations |
| FilterDialog | Filter options dialog |
| FindDialog | Find dialog |
| FindReplaceDialog | Find/Replace dialog |
| Fit | Fit base class |
| FitData | Structure for fitting data |
| FitDialog | Fit Wizard |
| FitModelHandler | |
| Folder | Folder for the project explorer |
| FolderListItem | Folders list item class |
| FolderListView | Folder list view class |
| FrameWidget | |
| FrameWidgetTreeItem | FrameWidgetTreeItem tree widget item class |
| FrequencyCountDialog | Filter options dialog |
| FunctionCurve | |
| FunctionDialog | Function dialog |
| GaussAmpFit | |
| GaussFit | |
| Graph | A 2D-plotting widget |
| Graph3D | 3D graph widget |
| Grid | |
| GriddingDialog | Random XYZ gridding options dialog |
| ImageExportDialog | QFileDialog extended with options for image export |
| ImageProfilesTool | |
| ImageSymbol | A QwtSymbol displaying a custom image |
| ImageWidget | |
| ImportASCIIDialog | Import ASCII file(s) dialog |
| ImportExportPlugin | |
| IntDialog | Integration options dialog |
| Integration | |
| IntegrationDialog | Integration options dialog |
| Interpolation | |
| InterpolationDialog | Interpolation options dialog |
| LayerButton | Button with layer number |
| LayerDialog | Arrange layers dialog |
| LayerItem | LayerItem tree widget item class |
| LegendWidget | |
| LinearColorMap | A customized QwtLinearColorMap |
| LinearFit | |
| LinearSlopeFit | |
| LineDialog | Line options dialog |
| LineNumberDisplay | A QTextEdit displaying line numbers |
| LineProfileTool | Plot tool for calculating intensity profiles of image markers along a line |
| LnScaleEngine | |
| Log2ScaleEngine | |
| LogisticFit | |
| LogitScaleEngine | |
| LogitScaleTransformation | |
| LorentzFit | |
| Matrix | Matrix worksheet class |
| MatrixData | |
| MatrixDeleteColsCommand | |
| MatrixDeleteRowsCommand | |
| MatrixDialog | Matrix properties dialog |
| MatrixEditCellCommand | Matrix commands used by the undo/redo framework |
| MatrixFftCommand | |
| MatrixImportAsciiCommand | |
| MatrixInsertColCommand | |
| MatrixInsertRowCommand | |
| MatrixModel | |
| MatrixPasteCommand | |
| MatrixResampleCommand | |
| MatrixResamplingDialog | Matrix properties dialog |
| MatrixSetColorMapCommand | |
| MatrixSetColWidthCommand | |
| MatrixSetCoordinatesCommand | |
| MatrixSetFormulaCommand | |
| MatrixSetHeaderViewCommand | |
| MatrixSetImageCommand | |
| MatrixSetPrecisionCommand | |
| MatrixSetSizeCommand | |
| MatrixSetViewCommand | |
| MatrixSizeDialog | Matrix dimensions dialog |
| MatrixSmoothCommand | |
| MatrixSymmetryOperation | |
| MatrixUndoCommand | |
| MatrixValuesDialog | Set matrix values dialog |
| MdiSubWindow | Base class of all MDI client windows |
| MultiLayer | An MDI window (MdiSubWindow) managing one or more Graph objects |
| MultiPeakFit | |
| MultiPeakFitTool | |
| muParserScript | TODO |
| muParserScripting | TODO |
| MyParser | Mathematical parser class based on muParser |
| MyTable | |
| NonLinearFit | |
| Note | Notes window class |
| OpenProjectDialog | |
| ParenthesisInfo | Structure used for parentheses matching |
| PatternBox | A modified QComboBox allowing to choose a Qt::BrushStyle style |
| PenStyleBox | A modified QComboBox allowing to choose a Qt::PenStyle |
| PieCurve | Pie plot class |
| PieLabel | |
| Plot3DDialog | Surface plot options dialog |
| PlotCurve | Abstract 2D plot curve class |
| PlotDialog | Custom plot/curves dialog |
| PlotMarker | |
| PlotToolInterface | |
| PlotWizard | A wizard type dialog class to create new plots |
| PluginFit | |
| PolynomFitDialog | Fit polynomial dialog |
| PolynomialFit | |
| PreviewMatrix | |
| PreviewTable | |
| ProbabilityScaleEngine | |
| ProbabilityScaleTransformation | |
| PythonScript | |
| PythonScripting | |
| PythonSyntaxHighlighter | |
| QtColorPicker | Widget for selecting colors from a popup color grid |
| QtiPlotApplication | |
| QwtBarCurve | Bar curve |
| QwtHistogram | Histogram class |
| QwtSingleArrayData | Single array data (extension to QwtData) |
| RangeLimitBox | A checkable DoubleSpinBox that can be used to select the limits of a double interval |
| RangeSelectorTool | |
| ReciprocalScaleEngine | A scale engine for reciprocal (1/t) scales |
| ReciprocalScaleTransformation | |
| RectangleWidget | |
| RenameWindowDialog | Rename window dialog |
| ScaledFontsPrintFilter | |
| ScaleDraw | Extension to QwtScaleDraw |
| ScaleEngine | |
| ScalePicker | Handles user interaction with a QwtScaleWidget |
| ScaleTransformation | |
| ScreenPickerTool | |
| Script | A chunk of scripting code. Abstract |
| scripted | Interface for maintaining a reference to the current ScriptingEnv |
| ScriptEdit | Editor widget with support for evaluating expressions and executing code |
| ScriptingChangeEvent | Notify an object that it should update its scripting environment (see class scripted) |
| ScriptingEnv | An interpreter for evaluating scripting code. Abstract |
| ScriptingLangDialog | |
| ScriptingLangManager | Keeps a static list of available interpreters and instantiates them on demand |
| ScriptWindow | Python script window |
| SelectionMoveResizer | Handler for modifying one or more QWidget and/or QwtPlotMarker with mouse or keyboard |
| SetColValuesDialog | Set column values dialog |
| ShapiroWilkTest | Normality test |
| SigmoidalFit | |
| SmoothCurveDialog | Smoothing options dialog |
| SmoothFilter | |
| SortDialog | Sorting options dialog |
| Spectrogram | |
| Statistics | Abstract base class for data analysis operations |
| StatisticTest | Abstract base class for statistic tests |
| StudentTestDialog | Filter options dialog |
| SubtractDataDialog | Subtract reference data dialog |
| SubtractLineTool | |
| SurfaceDialog | Define surface plot dialog |
| SymbolBox | A modified QComboBox allowing to choose a QwtSmbol style |
| SymbolDialog | Tools window to select special text characters |
| SyntaxHighlighter | |
| Table | MDI window providing a spreadsheet table with column logic |
| TableDialog | Column options dialog |
| TableStatistics | Table that computes and displays statistics on another Table |
| TextBlockData | Help class used for parentheses matching (code taken from Qt Quarterly Issue 31 · Q3 2009) |
| TextDialog | Options dialog for text labels/axes labels |
| TextEditor | |
| TextFormatButtons | Widget with text format buttons (connected to a QTextEdit) |
| TexWidget | |
| ThreeExpFit | |
| TitlePicker | |
| TranslateCurveTool | Plot tool for translating curves |
| TreeWidgetFolderItem | Folders list item class |
| tTest | Student's t-Test |
| TwoExpFit | |
| UserFunction | Class for user defined surfaces |
| UserParametricSurface | Class for user defined parametric surfaces |
| VectorCurve | Vector curve class |
 WindowListItem | Windows list item class |
