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# JKQTPlotter - A Qt Plotting Library
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This is an extensive C++ library for data visualization, plotting and charting for Qt (>= 5.0, tested with Qt up to 6.3). It is feature-rich but self-contained and only depends on the [Qt framework ](https://qt.io ).
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This software is licensed under the term of the [GNU Lesser General Public License 2.1
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(LGPL 2.1)](./LICENSE) or above.
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[](https://github.com/jkriege2/JKQtPlotter/releases)
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[](https://doc.qt.io/qt-5/)
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[](https://doc.qt.io/qt-6/)
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[](http://jkriege2.github.io/JKQtPlotter/index.html)
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[](https://ci.appveyor.com/project/jkriege2/jkqtplotter)
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[](https://github.com/jkriege2/JKQtPlotter/pulse)
[](https://github.com/jkriege2/JKQtPlotter/pulse)
[](https://github.com/jkriege2/JKQtPlotter/graphs/contributors)
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[](https://github.com/jkriege2/JKQtPlotter/issues)
[](https://github.com/jkriege2/JKQtPlotter/issues?q=is%3Aissue+is%3Aclosed)
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[](https://github.com/jkriege2/JKQtPlotter/pulls)
[](https://github.com/jkriege2/JKQtPlotter/pulls?q=is%3Apr+is%3Aclosed)
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[](https://github.com/jkriege2/JKQtPlotter/actions/workflows/codeql-analysis.yml)
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## Main Features
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- 2D Plotter widget class ([JKQTPlotter](http://jkriege2.github.io/JKQtPlotter/group__jkqtplotter.html)
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- high-quality plotting
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- no other dependencies than Qt >= 5.0 ([CImg](https://cimg.eu/) and [OpenCV ](https://opencv.org/ ) are optional dependencies)
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- highly customizable axes/grids (linear/log, date/time, custom ticks ...)
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- [JKQTMathText: ](http://jkriege2.github.io/JKQtPlotter/group__jkqtmathtext.html ) integrated LaTeX parser (pure C++, no dependencies) to render mathematical equations in axis labels, ticks, ...
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- extensive user-interactions pre-programmed (several zooming modes, selecting regions, custom context menus, switch graph visibility, ...)
- full print and export (PDF,PNG,...) support with preview and parametrization out-the-box
- highly customizable look and feel
- supports the Qt layout system for graphs and allows to symchronize several graphs with each other
- centralized data management in an internal datastore:
- data organized by columns, can also represent image data (ropw-major)
- allows to reuse a column in several graphs
- access via Qt's model view framework
- external or internal datasets
- complete with GUI (table view)
- export capabilities (e.g. to CSV, SYLK, ...)
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- C++ standard iterator interface
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- statistics library (basic statistics, boxplots, histograms, kernel density estimates, regression analysis, polynomial fitting)
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- large variety of graphs that can be added to a plot, e.g.:
- scatter-plots (also parametrized color/size/symbol by a third data-column)
- line graphs, step graphs, impulses
- filled curves
- barcharts (also stacked)
- extensive support for different styles of error indicators
- integrated mathematical function parser for function plots (with intelligent rendering algorithm)
- line/scatter graphs can also be based on C/C++ functions instead of data series (C++11 support!)
- statistical plots (e.g. boxplots)
- extensive library of image plots (inclusing different color-scale modes, RGBA-plots, overlays/masks)
- contour plots
- geometric forms/annotations
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- can be easily extended by deriving a new graph from JKQTPPlotElement, JKQTPPlotAnnotationElement, JKQTPGeometricPlotElement, JKQTPGraph
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- optional: OpenCV, CImg interfaces
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- CMake-based build system
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- extensive set of [Examples/Tutorials ](./examples/README.md )
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- extensive doxygen-generated [Documentation ](http://jkriege2.github.io/JKQtPlotter/index.html )
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## [Documentation](http://jkriege2.github.io/JKQtPlotter/index.html)
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A Documentation (auto-)generated with [doxygen ](http://www.doxygen.nl/ ) from the trunk source code can be found here:
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**[http://jkriege2.github.io/JKQTPlotter/index.html](http://jkriege2.github.io/JKQtPlotter/index.html)**
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There are also some subpage of general intetest:
- [TODO List ](http://jkriege2.github.io/JKQtPlotter/page_todo.html )
- [Release Notes & Version Overview ](http://jkriege2.github.io/JKQtPlotter/page_whatsnew.html )
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## [Examples](./examples/)
There is a [large set of usage examples (with explanations for each) and tutorials ](./examples/ ) in the folder [`./examples/` ](./examples ).
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All test-projects are Qt-projects that use qmake to build. You can load them into QtCreator easily.
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## [Screenshots](./screenshots/)
The [Screenshots-page ](./screenshots/ ) contains several screenshots, partly taken from the provided examples, but also from other software using this libarary (e.g. [QuickFit 3.0 ](https://github.com/jkriege2/QuickFit3 ))
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[](./screenshots/README.md)
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## Building
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[](https://github.com/jkriege2/JKQtPlotter/releases)
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JKQTPlotter contains two different build systems: A modern [CMake ](https://cmake.org/ )-based build and an older (and deprecated!) QMake-based build (which works out of the box with Qt 5.x and QT 6.x). Both systems are explained in detail in http://jkriege2.github.io/JKQtPlotter/page_buildinstructions.html.
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With [CMake ](https://cmake.org/ ) you can easily build JKQTPlotter and all its examples, by calling something like:
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```
$ mkdir build; cd build
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$ cmake .. -G "< cmake_generator > " "-DCMAKE_PREFIX_PATH=< path_to_your_qt_sources > "
$ cmake --build . --config "Debug"
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```
