Pyqtgraph documentation Exporting from the GUI#. Qt relies on its QColor, QPen and QBrush classes for specifying line and fill styles for all of its drawing. w (int or None, optional) – If None, then the value will be determined automatically based on the size of the tick text, by default None. Use ev. GraphicsLayout. plot()) pyqtgraph. addPlot>. ) and second is to provide tools to aid in rapid application development (for example, property trees such as used in Qt Designer). parametertree. mouseEvents. g. The PyQtGraph library welcomes contributions from the community. Return the buttons currently pressed on the mouse. Most importantly: 1) Qt GUIs are composed of QWidgets, 2) A special widget called QGraphicsView is used for displaying complex graphics, and 3) QGraphicsItems define the objects that are PyQtGraph#. Despite being written entirely in python, the library is very fast due to its heavy leverage of numpy for number crunching, Qt’s GraphicsView framework for 2D display, and OpenGL The user guide provides in-depth information on the key concepts of PyQtGraph. The render performance of QPainterPath when using a QPen that has a width greater than 1 is quite poor, but PyQtGraph can fall back to constructing an array of QLine objects representing each line segment. Comment utiliser pyqtgraph est expliqué TargetItem# class pyqtgraph. plot(), PlotWidget, and :meth :GraphicsLayout. deb file linked at the top of the pyqtgraph web page. levelMode (str) – See the levelMode argument to HistogramLUTItem. If you want to make pyqtgraph available system-wide, copy the folder to one of the directories listed in python's sys. The PyQtGraph repository on Github also has a complete set of plot examples. ) The gray lines with the diamonds indicate an aggregation relation. If you would like to request a specific section of documentation, please ask on the forum. linspace(-pi, pi, 100)) format: Format string to determine number of decimals to show, etc. 0 •Enable/disable automatic scaling when the data range changes •Link the axes of multiple views together •Enable disable mouse interaction per axis •Explicitly set the visible range values The exact set of items available in the menu depends on the contents of the scene and the object clicked on. These widgets can generally be used in any Qt application and provide functionality that is frequently useful in science and engineering applications. This user guide provides an in-depth description of PyQtGraph features and how they apply to common scientific visualization tasks. The black arrows indicate inheritance between two classes (with the parent class always above the child classes. Aug 17, 2015 · If you have both libraries installed on your system and you wish to force pyqtgraph to use one or the other, simply make sure it is imported before pyqtgraph: like so: import PySide ## this will force pyqtgraph to use PySide instead of PyQt4 import pyqtgraph as pg This solved my issue. pyqtgraph Documentation is a user manual for pyqtgraph, a Python library that provides features commonly required in engineering and science applications. . It’s main functionality is: Manage placement of ViewBox, AxisItems, and LabelItems Apr 19, 2023 · PyQtGraph is a graphics and user interface library for Python that provides functionality commonly required in designing and science applications. - PyQtGraph is a pure-python graphics and GUI library built on PyQt / PySide and numpy. GuiQwt is an interesting project with many advanced features similar to pyqtgraph. Pyqtgraph est un module utile de la bibliothèque PYQT pour créer un graphique. A pure-python graphics and GUI library built on PyQt / PySide and numpy for use in mathematics / scientific / engineering applications. I was curious, so I tried to make a simple GUI application that displays a 3D model in combination with PyQt5. Jul 1, 2022 · Extend your PySide6 GUIs with dynamic plotting using PyQtGraph. Note that using this option may have a significant performance cost. Internally, pyqtgraph uses the same system but also allows many shorthand methods of specifying the same style options. Documentation The official documentation lives at https://pyqtgraph. It focuses on fast, interactive graphics for displaying data, including plots, video, and more. PyQtGraph’s Widgets# PyQtGraph provides several QWidget subclasses which are useful for building user interfaces. ) and 2) to provide tools to aid in rapid application development (for example, property trees such as used i Getting Started#. (see PlotItem. Class used to allow GraphicsWidgets to anchor to a specific position on their parent. Nov 29, 2016 · This document provides an introduction and overview of pyqtgraph, an open-source Python library for scientific graphics and GUI programming. scenePos() to get the click position in scene coordinates. Documentation is hosted here. There are also many examples to look through; for a menu of examples run: python -m pyqtgraph. Parameters:. (Note that subclasses must call setupGLState before painting for this to work) The simplest way to invoke this method is to pass in the name of a predefined set of options (see the GLOptions variable): ===== ===== opaque Enables depth testing and disables blending translucent Enables MouseDragEvent# class pyqtgraph. It is presently based on PyQwt and thus comes with imageItem (ImageItem) – If specified, this object will be used to display the image. addPlot() <pyqtgraph. readthedocs. GridItem ( pen = 'default', textPen = 'default',) [source] # Bases: UIGraphicsItem Displays a rectangular grid of lines indicating major divisions within a coordinate system. See the Parameter Trees documentation for more information. Parameter# pyqtgraph. def setGLOptions (self, opts): """ Set the OpenGL state options to use immediately before drawing this item. The user guide provides in-depth information on the key concepts of PyQtGraph. This tutorial teaches you how to create interactive and customizable plots, and enhance your applications with real-time data visualization. x to select a specific library version from the repository, or use git pull to pull pyqtgraph updates from upstream (see the git documentation for more information). See full list on github. The user guide provides in-depth information on the key concepts of PyQtGraph. Most applications that use pyqtgraph’s data visualization will generate widgets that can be interactively scaled, panned, and otherwise configured using the mouse. Introduction. __init__() This class provides the ViewBox-plus-axes that appear when using pg. Oct 10, 2018 · 文章浏览阅读3w次，点赞64次，收藏330次。一、介绍1. 2D Graphics# In pyqtgraph, most 2D visualizations follow the following mouse interaction: Les tâches de visualisation scientifique ou numérique peuvent être effectuées facilement en python en utilisant diverses bibliothèques Python. class SliderParameter (Parameter): """ ===== ===== **Options** limits [start, stop] numbers step: Defaults to 1, the spacing between each slider tick span: Instead of limits + step, span can be set to specify the range of slider options (e. PyQtGraph is a pure-python graphics and GUI library built on PyQt4 / PySide and numpy. Visual Programming Flowcharts# PyQtGraph’s flowcharts provide a visual programming environment similar in concept to LabView–functional modules are added to a flowchart and connected by wires to define a more complex and arbitrarily configurable algorithm. It is presently based on PyQwt and thus comes with setPrefix (p) [source] #. Like PyQwt, however, Chaco can be challenging to install on a wide variety of platforms and lacks some of pyqtgraph's more advanced features (although pyqtgraph certainly lacks many of Chaco's features as well). setWidth ( w: int | None = None,) [source] # Set the width of this axis reserved for ticks and tick labels. Somehow, when I was looking at the PyQtGraph documentation, I noticed that there was a 3D Graphics function in the API. GraphicsScene. Jan 15, 2024 · In this tutorial, you've learned how to draw basic plots with PyQtGraph and customize plot components, such as lines, markers, titles, axis labels, and more. examples to launch the examples application. Using QPainter. examples Use git checkout pyqtgraph-x. Being PyQtGraph适用于数学/科学/工程应用。尽管完全用python编写，但该库由于使用了numpy进行数字运算，Qt用于2D显示的GraphicsView框架 """ PyQtGraph - Scientific Graphics and GUI Library for Python www. Feb 19, 2024 · In this tutorial, you've learned how to draw basic plots with PyQtGraph and customize plot components, such as lines, markers, titles, axis labels, and more. Les graphiques 2D et 3D peuvent être créés en utilisant ce module. PyQtGraph绘图及图表功能详解 PyQtGraph是一个基于PyQt的绘图和数据可视化库，它提供了丰富的绘图和图表功能，用于创建各种类型的数据可视化。 本文将详细介绍如何使用PyQtGraph绘制图形和图表，并给出相应的编程代码和配置。 Interactive Parameters#. For a complete overview of PyQtGraph methods and capabilities, see the PyQtGraph documentation. mkPen. setSingleStep ( step,) [source] # Set the step size used when responding to the mouse wheel, arrow buttons, or arrow keys. PyQtGraph provides a variety of export formats for all 2D graphics. 0dev0' ### import all the goodies and add some helper functions for easy CLI use import importlib import os import sys import numpy # # pyqtgraph requires numpy ## 'Qt' is a local module; it is intended mainly to cover up the differences PyQtGraph是纯Python图形GUI库，它充分利用PyQt和PtSide的高质量的图形表现水平和NumPy的快速科学计算与处理能力，在数学、科学和工程领域都有广泛的应用。 其主要目标是： 为数据（绘图，视频等）提供快速可交互式图形显示。 提供帮助快速开发应用程序的工具（例如，Qt Designer中使用的属性树）。 Exporting#. Start with “Plotting With PyQtGraph and PyQt5” Dec 10, 2022 · Per the pyqtgraph documentation it's possible to specify the connectivity of data points on a line plot via the PlotDataItem: connect supports the following arguments: - ‘all’ connects all points. path list. MouseClickEvent. The official documentation lives at pyqtgraph. The document also provides instructions on PyQtGraph is based heavily on Qt’s GraphicsView framework–if you are not already familiar with this, it’s worth reading about (but not essential). examples" for a menu Some (incomplete) documentation exists at this time. x. Must be an instance of ImageItem or other compatible object. Python, 3D, PyQt5, PyQtGraph. This guide is intended to help you get started with contributing to the project. PyQtGraph’s flowcharts provide a visual programming environment similar in concept to LabView–functional modules are added to a flowchart and connected by wires to define a more complex and arbitrarily configurable algorithm. lastPos [source] # Emitted when the mouse is clicked over the scene. (if the axes in your data are ordered differently, use numpy. It describes what pyqtgraph is, how it can be used to build data visualization and GUI applications, and its key features like 2D and 3D plotting, image display, parameter trees, and exporting capabilities. (see QGraphicsSceneMouseEvent::buttons in the Qt documentation) isEnter [source] # Returns True if the mouse has just entered the item’s shape. More complicated examples are presented and greater detail of the capabilities of the library are highlighted. Despite being written entirely in python, the library is very fast due to its heavy leverage of numpy for number crunching and Qt's GraphicsView framework for fast display. Developer Guide#. See pyqtgraph. Set a string prefix. image (* args, ** kargs,) [source] # Create and return an ImageView Will PyQtGraph#. Image handling in pyqtgraph is much more complete (again, no ROI widgets in qwt). GraphicsWidgetAnchor# class pyqtgraph. Other Packages# Packages for pyqtgraph are also available in a few other forms: Debian, Ubuntu, and similar Linux: Use apt install python-pyqtgraph or download the . io The easiest way to learn PyQtGraph is to browse through the examples; run python -m pyqtgraph. QPen. Its primary goals are to provide fast, interactive graphics for displaying data (plots, video, etc. Many functions and methods in pyqtgraph accept arguments specifying the line style (pen), fill style (brush), or color. Defaults to display based on span dtype precision: int PyQtGraph’s Helper Functions# Simple Data Display Functions# pyqtgraph. It is intended for use in mathematics / scientific / engineering applications. This enables construction of custom Parameter classes by name in create(). drawLines, PyQtGraph is able to draw lines with thickness greater than 1 pixel with a smaller performance penalty. If you do not plan to make use of git’s versioning features, adding the option --depth 1 to the git clone command retrieves only the latest version. com pyqtgraph Documentation, Release 0. For that reason, the part of the HistogramLUTItem that corresponds to the actual signal looks like a thin line and the noise is big next to it. plot (* args, ** kargs) [source] # Create and return a PlotWidget Accepts a title argument to set the title of the window. This section will guide you through the process of installing PyQtGraph and some common use cases, such as plotting data, displaying video and images, and building graphical user interfaces. Visual Programming with Flowcharts#. The width of the axis label is automatically added. One of the major strengths of Python is in exploratory data science and visualization, using tools such as Pandas, numpy, sklearn for data analysis and matplotlib plotting. For 3D graphics, see Exporting 3D Graphics below. - - ‘pairs’ generates lines between every other point. pyqtgraph/pyqtgraph’s past year of commit activity Python 4,071 1,118 414 (5 issues need help) 37 Updated Apr 8, 2025 Dash-User-Contributions Public Forked from Kapeli/Dash-User-Contributions Nov 6, 2012 · The web documentation for PyQtGraph is admittedly less than desirable, but the source code is well commented and easy to read, couple that with well documented and diverse set of demo code and in my experience it far surpasses matplotlib in both ease of use and performance (even with the much more extensive online documentation for matplotlib). All other arguments are used to plot data. 10. transpose to rearrange them) The green boxes represent Qt classes, the purple boxes are PyQtGraph classes. 14. pyqwt5: About as fast as pyqtgraph, but not quite as complete for plotting functionality. PyQtGraph is a pure-python graphics and GUI library built on PyQt5/PySide2 and numpy. Use git checkout pyqtgraph-x. - - ‘finite’ creates a break when a nonfinite points is encountered. User Guide#. np. 1 什么是pyqtgraph？PyQtGraph是Python的图形和用户界面库，它充分利用PyQt和PtSide的高质量的图形表现水平和NumPy的快速科学计算与处理能力，在数学、科学和工程领域都有广泛的应用。 Jan 30, 2015 · I'm using pyqtgraph for a live view of a camera acquisition program. registerParameterType ( name, cls, override = False,) [source] # Register a parameter type in the parametertree system. Matplotlib (to my knowledge) does not include many of pyqtgraph’s features such as image interaction, volumetric rendering, parameter trees, flowcharts, etc. Most of the times my images are composed of a lot of background noise and a signal of just a few pixels with higher intensity. Performance related considerations are detailed here. pyqtgraph. Its primary goals are 1) to provide fast, interactive graphics for displaying data (plots, video, etc. Introduction# What is pyqtgraph?# PyQtGraph is a graphics and user interface library for Python that provides functionality commonly required in engineering and science applications. In this tutorial we'll look at these alternatives and build some simple plot interfaces. a single argument to pass to pg. It is intended to be a reference for users who are already familiar with the basics of PyQtGraph. setRange ( r0, r1,) [source] # Set the upper and lower limits for values in the spinbox. This section describes mouse interaction with these widgets. MouseDragEvent ( moveEvent, pressEvent, lastEvent, start = False, finish = False,) [source] # Instances of this class are delivered to items in a GraphicsScene via their mouseDragEvent() method when the item is being mouse-dragged. Documentation: There are many examples; run "python -m pyqtgraph. To use with a specific project, simply copy the pyqtgraph subdirectory anywhere that is importable from your project. pos() to get the click position relative to the item that was clicked on, or ev. a record array of length M with fields (red, green, blue, alpha, width). isExit [source] # Returns True if the mouse has just exited the item’s shape. Fast data visualization and GUI tools for scientific / engineering applications - Releases · pyqtgraph/pyqtgraph PyQtGraph does not need to be “built” or compiled in any way. As indicated by the documentation for Parameters and Parameter Trees, a Parameter is commonly used to expose a value to the user without burdening developers with GUI representations. org """ __version__ = '0. TargetItem ( pos = None, size = 10, symbol = 'crosshair', pen = None, hoverPen = None, brush = None, hoverBrush = None, movable = True In addition, there are PyQt-specific plotting options available such as PyQtGraph which provide a better interactive experience. io The easiest way to learn pyqtgraph is to browse through the examples; run python -m pyqtgraph. Mar 10, 2024 · Hello PyQtGraph community, I recently came across a feature in the PyQtGraph documentation which mentions: If the data is 3D (time, x, y), then a time axis will be shown with a slider that can set the currently displayed frame. GridItem# class pyqtgraph. The item will be automatically repositioned if the parent is resized. sigMouseMoved(pos) Emitted when the mouse cursor moves over the scene. Any 2D graphics can be exported by right-clicking on the graphic, then selecting ‘export’ from the context menu. GraphicsWidgetAnchor [source] #. Ce module peut créer des graphiques très rapidement. bvuetrjwlcmhiozydjahqcoxccddukpcydokvdhxdyvfstsfzgqfpgjkbtcmhxyfxesbunfibuioln