Pyqtgraph documentation.

• Pyqtgraph documentation examples to launch the examples application. . Jul 10, 2023 · Here, the specific section of interest is the GraphicsView framework, which provides a surface for managing and interacting with a large number of custom-made 2D graphical items, with support for zooming and rotation Qt documentation, 2021. It is presently based on PyQwt and thus comes with 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). 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. LayoutWidget# class pyqtgraph. Qt. Jul 30, 2020 · Having the same problem I wrote an ugly fix, taking the code from the current pyqtgraph repo. ) and 2) to provide tools to aid in rapid application development (for example, property trees such as used i PyQtGraph is intended for use in mathematics / scientific / engineering applications. GraphicsScene. This would also work for the addLine() method you referenced in the question, Emitted when the user clicks on the ROI. A 2-dimensional ndarray. GraphicsObject` Parameters-----image : np. ActionParameter ( ** opts,) [source] # Used for displaying a button within the tree. meshDataChanged [source] #. Jan 5, 2024 · pyqtgraph 教程 简介. """ PyQtGraph - Scientific Graphics and GUI Library for Python www. np. Notes on performance: Line widths greater than 1 pixel affect the performance as discussed in the documentation of PlotDataItem. The manual also includes tools for rapid application development, such as property trees. Jun 4, 2020 · I know that pyqtgraph is NumPy based and NumPy is a very optimized package because the core was written in C and Fortran languages. This document provides an overview of the pyqtgraph library, a graphics and user interface library for Python that provides functionality commonly required in engineering and science applications. Current capabilities include: 3D view widget with zoom/rotate controls (mouse drag and wheel) Scenegraph allowing items to be added/removed from scene with per-item transformations and parent/child relationships. - - ‘pairs’ generates lines between every other point. (see PlotItem. If you want to make pyqtgraph available system-wide, copy the folder to one of the directories listed in python's sys. Fast data visualization and GUI tools for scientific / engineering applications - Releases · pyqtgraph/pyqtgraph 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。 QPen. PyQtGraph is a pure-python graphics and GUI library built on PyQt5/PySide2 and numpy. ImageItem ( image: ndarray | None = None, ** kargs,) [source] # Graphics object used to display image data. This documentation should be used as a reference if looking for a basis of PyQtGraph’s inner workings. Being imageItem (ImageItem) – If specified, this object will be used to display the image. Parameters:. For 3D graphics, see Exporting 3D Graphics below. LayoutWidget ( parent = None,) [source] # Convenience class used for laying out QWidgets in a grid. 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. parametertree. 0' ### 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 The colors for intermediate values are determined by interpolating between the two nearest colors in RGB color space. Adds a color bar linked to the ImageItem specified by image. examples Getting Started#. 1' ### 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 Documentation Structure. show() # create a plot item Section Navigation. Apr 9, 2025 · pyqtgraph-ext. GridItem ( pen = 'default', textPen = 'default',) [source] # Bases: UIGraphicsItem Displays a rectangular grid of lines indicating major divisions within a coordinate system. io The easiest way to learn pyqtgraph is to browse through the examples; run python -m pyqtgraph. Collection of PyQtGraph widgets/tools with custom styling or behavior. a record array of length M with fields (red, green, blue, alpha, width). QGraphicsItem documentation for more details. ignore [source] # Built-in Parameter Types# Parameters# class pyqtgraph. addFreeHandle() method. To use with a specific project, simply copy the pyqtgraph subdirectory anywhere that is importable from your project. MouseClickEvent. To take an example, I developed an application to plot data with pyQt+pyqtgraph. py 290-410. Therefore the error: addItem is expecting a QGraphicsLayoutItem (or something that inherits that class), and you're passing a QWidget Jan 5, 2017 · Which draws a blue line with width 5. Requires a PyQt package. 14. Its primary goals are 1) 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. If you would like to request a specific section of documentation, please ask on the forum. GraphicsLayout: pyqtgraph-documentation. taurus_pyqtgraph also has some examples. The documentation build process turns source code and documentation files into a complete documentation website. Ce module peut créer des graphiques très rapidement. Here a rewrite of your code using QGridLayout (only widgets can be added to layout, so LabelItem is replaced by QLabel): def setCompositionMode (self, mode): """ Change the composition mode of the item. GridItem# class pyqtgraph. TargetItem ( pos = None, size = 10, symbol = 'crosshair', pen = None, hoverPen = None, brush = None, hoverBrush = None, movable = True PyQtGraph is a pure-python graphics and GUI library built on PyQt / PySide and numpy. 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). Image handling in pyqtgraph is much more complete (again, no ROI widgets in qwt). 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。 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）。 """ PyQtGraph - Scientific Graphics and GUI Library for Python www. It is intended for use in mathematics / scientific / engineering applications. Use git checkout pyqtgraph-x. The item will be automatically repositioned if the parent is resized. 1D arrays of values specifying the x,y positions of vertexes in the grid. Exporting#. Remembers selected value if list is cleared and subsequently repopulated Return the mouse button that generated the click event. PyQtGraph is built on this foundation to extend the SciPy stack with performant cross-platform visualization. MouseButton. The cutoff value at which to draw the isocurve. plot() and then setData() for each of my edge. This system is functional but still early in development. addColorBar(img, colorMap=’viridis’) is a convenient method to assign and show a color map. def __init__ (self, * args, ** kwargs): """ Create a pseudocolor plot with convex polygons. Transform3D) – Tranformation from the local coordinate system to the parent’s. This method must be called to inform the item that the MeshData object has been altered. Documentation: There are many examples; run "python -m pyqtgraph. Should work with PySide6, PyQt6, or PyQt5. Sep 25, 2020 · 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). " The thing is, a QtPushButton is not a graphic item, it's a widget. deb file linked at the top of the pyqtgraph web page. ) The gray lines with the diamonds indicate an aggregation relation. Interactive Parameters#. It is presently based on PyQwt and thus comes GraphicsWidgetAnchor# class pyqtgraph. Pyqtgraph est un module utile de la bibliothèque PYQT pour créer un graphique. addColorBar (image, ** kargs) [source] ¶. ImageItem can render images with 1, 3 or 4 channels, use lookup tables to apply false colors to images, and users can either set levels limits, or rely on the auto-sampling. python spectogram plotted using pyqtplot. **kargs : dict, optional Arguments directed to `setImage` and `setOpts`, refer to each method for documentation for possible arguments. 4' ### import all the goodies and add some helper functions for easy CLI use import os import sys import numpy # # pyqtgraph requires numpy ## 'Qt' is a local module; it is intended mainly to cover up the differences ## between PyQt and Section Navigation. API# class pyqtgraph. readthedocs. 10. Visual Programming with Flowcharts#. Performance related considerations are detailed here. 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. This guide is intended to help you get started with contributing to the project. Must be an instance of ImageItem or other compatible object. parameterTypes. 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. Qt relies on its QColor, QPen and QBrush classes for specifying line and fill styles for all of its drawing. If these are omitted, then the values will be assumed to be integers. The official documentation lives at pyqtgraph. 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. sigMouseMoved(pos) Emitted when the mouse cursor moves over the scene. Matplotlib (to my knowledge) does not include many of pyqtgraph’s features such as image interaction, volumetric rendering, parameter trees, flowcharts, etc. Introduction. Learn about its features, capabilities, and how to use it for rapid application development. transpose to rearrange them) PyQtGraph#. QApplication([]) win = pg. level. path list. 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. Global Configuration Options; PyQtGraph’s Helper Functions; PyQtGraph’s Graphics Items See QPainter::CompositionMode in the Qt Documentation for more options and details setImage ( image = None , autoLevels = None , ** kargs ) [source] ¶ Updates the image displayed by this ImageItem. (see QGraphicsSceneMouseEvent::button in the Qt documentation) buttons [source] # Return the buttons currently pressed on the mouse. PyQtGraph 是一个用于科学和工程数据可视化的开源库，基于 PyQt 和 NumPy 构建而成。它提供了丰富的绘图工具和交互功能，可以用于创建高性能的实时数据图表、图像显示和信号处理应用。 Pyqtgraph doesn't offer easy way to implement live plotting out of the box. drawLines, PyQtGraph is able to draw lines with thickness greater than 1 pixel with a smaller performance penalty. pyqtgraph Documentation, Release 0. mkPen>` is allowed. There are also many examples to look through; for a menu of examples run: python -m pyqtgraph. The easiest way to learn PyQtGraph is to browse through the examples; run python -m pyqtgraph. plot (* args, ** kargs) [source] # Create and return a PlotWidget Accepts a title argument to set the title of the window. Can be initialized as None, and set later using setData. there you can set stretchFactors. A ColorMap object provides access to the interpolated colors by indexing with a float value: cm[0. 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. PyQtGraph does not need to be “built” or compiled in any way. Sep 17, 2015 · you can use QLayout instead of pyqtgraph. lastPos [source] # Arguments: data. To do this, PgLive provides DataConnector object, which consumes data and manages data plotting. 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. Global Configuration Options; PyQtGraph’s Helper Functions; PyQtGraph’s Graphics Items PyQtGraph makes extensive usage of Qt’s Graphics View framework. fillLevel (float or None) Fill the area under the curve to the specified value. fillOutline (bool) If True, an outline surrounding the `fillLevel` area is drawn. This user guide provides an in-depth description of PyQtGraph features and how they apply to common scientific visualization tasks. 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. addPlot() <pyqtgraph. ) and 2) to provide tools to aid in rapid application development (for example, property trees such as used i PyQtGraph’s Widgets# PyQtGraph provides several QWidget subclasses which are useful for building user interfaces. QPainter. columnCount * 2 # FIRST ROW FULL if col PyQtGraph’s Helper Functions# Simple Data Display Functions# pyqtgraph. pyqtgraph #27785891 3 weeks, 1 day ago. But, what about QtChart? It is written in C++ and also should be efficient (I suppose). The PyQtGraph documentation is organized into a logical hierarchy that makes information accessible to users with different needs and levels of expertise. 13. pyqtgraph/pyqtgraph’s past year of commit activity Python 4,072 1,120 414 (5 issues need help) 38 Updated Apr 8, 2025 Dash-User-Contributions Public Forked from Kapeli/Dash-User-Contributions TargetItem# 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 . PyQtGraph is a pure-python graphics and GUI library built on PyQt4 / PySide and numpy. Jul 1, 2022 · Extend your PySide6 GUIs with dynamic plotting using PyQtGraph. Set a string prefix. rowCount() if row: row -= 1 nCol = legend. The width of the axis label is automatically added. Arguments: x,y. Most applications that use pyqtgraph’s data visualization will generate widgets that can be interactively scaled, panned, and otherwise configured using the mouse. 0) specifying spot colors OR a tuple of floats specifying a single color for all spots. More complicated examples are presented and greater detail of the capabilities of the library are highlighted. setAcceptedMouseButtons(QtCore. GraphicsWidgetAnchor [source] #. Exporting from the GUI#. Return the buttons currently pressed on the mouse. Install; Documentation; Install. I was curious, so I tried to make a simple GUI application that displays a 3D model in combination with PyQt5. Note that if pxMode is True, symbols are always rendered with antialiasing (since the rendered symbols can be cached, this incurs very little performance cost) *compositionMode* If specified, this sets the composition mode used when drawing the scatter plot (see QPainter::CompositionMode in the Qt documentation). A call like plot. 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). To enable clicking, call roi. ndarray or None, default None Image data. x. This is useful when overlaying multiple items. Dec 6, 2022 · You can add a Region of Interest (ROI) to a PyQtGraph plot and make it interactive with mouse down and drag using the ROI() class and the ROI. This enables construction of custom Parameter classes by name in create(). Use ev. Note that clicking is disabled by default to prevent stealing clicks from objects behind the ROI. For projects that already use git for code control, it is also possible to include pyqtgraph as a git subtree within your own repository. setVisible (vis,) [source] # Set the visibility of this item. g. For a complete overview of PyQtGraph methods and capabilities, see the PyQtGraph documentation. Coordinate Systems and Transformations# More information about the coordinate systems in Qt GraphicsView, read through the Graphics View Coordinate System documentation. CompositionMode`` Composition of the item, often used when overlaying items. 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. The philosophy is that you should use tpg as an extension to regular pyqtgraph widgets. Python, 3D, PyQt5, PyQtGraph. 2D Graphics# In pyqtgraph, most 2D visualizations follow the following mouse interaction: 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. Jan 15, 2024 · For a complete overview of PyQtGraph methods and capabilities, see the PyQtGraph documentation. It's optionated with good defaults, so you can start doing your work without having to setup plots, colors, scales, autoscaling, keybindings, handle panning+vertical zooming (which all non-finance libraries have problems with). This document provides an introduction and overview of pyqtgraph, an open-source Python library for scientific graphics and GUI programming. A pure-python graphics and GUI library built on PyQt / PySide and numpy for use in mathematics / scientific / engineering applications. ImageWindow>` (this is just a window with :class:`ImageView <pyqtgraph. LeftButton). May 11, 2017 · Also I'd just point out the examples have always been a big component of pyqtgraph's documentation despite not actually being integrated with the sphinx docs (yet). GuiQwt is an interesting project with many advanced features similar to pyqtgraph. 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. Sources: doc/source/conf. plot()) pyqtgraph. All other arguments are used to plot data. GraphicsWidget ( * args, ** kwargs,) [source] # __init__ ( * args, ** kwargs,) [source] # Bases: GraphicsItem, QGraphicsWidget . Triangular meshes If non-keyword arguments are used, they will be interpreted as setData(y) for a single argument and setData(x, y) for two arguments. The document also provides instructions on PyQtGraph#. a single argument to pass to pg. pyqtgraph Documentation is a user manual for pyqtgraph, a Python library that provides features commonly required in engineering and science applications. Arguments: pos (N,3) array of floats specifying point locations. The first class, LinearRegionItem, may be added to any ViewBox or PlotItem to mark either a horizontal or vertical region. 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. Emitted when the mouse is clicked over the scene. io. *name* The name of this item. 👍 2 s4m-mo and Arctek reacted with thumbs up emoji May 8, 2020 · Hi, I'm using PlotWidget to draw hundreds of discontinue edges in my Qt application. (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 Les tâches de visualisation scientifique ou numérique peuvent être effectuées facilement en python en utilisant diverses bibliothèques Python. examples" for a menu Some (incomplete) documentation exists at this time. ImageView>` widget inside), show image data inside. This may also be set via setImageItem() . 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. Internally, pyqtgraph uses the same system but also allows many shorthand methods of specifying the same style options. Here's an example: import pyqtgraph as pg from pyqtgraph. Parameters-----mode : ``QtGui. It is intended to be a reference for users who are already familiar with the basics of PyQtGraph. Oct 10, 2018 · 文章浏览阅读3w次，点赞64次，收藏330次。一、介绍1. The black arrows indicate inheritance between two classes (with the parent class always above the child classes. 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. In this tutorial we'll look at these alternatives and build some simple plot interfaces. Documentation is hosted here. Comment utiliser pyqtgraph est expliqué API# class pyqtgraph. sigActivated(self) is emitted when the button is clicked. So far my approach is to create a myplotwidget. Jan 30, 2015 · I'm using pyqtgraph for a live view of a camera acquisition program. ) and second is to provide tools to aid in rapid application development (for example, property trees such as used in Qt Designer). pen PyQtGraph includes graphics items which allow the user to select and mark regions of data. sigRemoveRequested PyQtGraph uses OpenGL to provide a 3D scenegraph system. ComboBox (parent = None, items = None, default = None,) [source] # Extends QComboBox to add extra functionality. 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. The following methods are wrapped directly from PlotItem: :func:`addItem <pyqtgraph. Introduction# What is pyqtgraph?# PyQtGraph is a graphics and user interface library for Python that provides functionality commonly required in engineering and science applications. image (* args, ** kargs,) [source] # Create and return an ImageView Will **Bases:** :class:`pyqtgraph. Les graphiques 2D et 3D peuvent être créés en utilisant ce module. 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. If you want to display data from common image and video file formats, you will need to load the data first using another library (PIL works well for images and built-in numpy conversion). The PyQtGraph repository on Github also has a complete set of plot examples . levelMode (str) – See the levelMode argument to HistogramLUTItem. Aug 28, 2023 · Best 8 Answer for question: "pyqtgraph documentation"? Please visit this website to see the detailed answer Visual Programming with Flowcharts¶. setupGLState [source] # This method is responsible for preparing the GL state options needed to render this item (blending, depth testing, etc). pos() to get the click position relative to the item that was clicked on, or ev. It focuses on fast, interactive graphics for displaying data, including plots, video, and more. 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 Documentation is a user manual for pyqtgraph, a Python library that provides features commonly required in engineering and science applications. (see QGraphicsSceneMouseEvent::buttons in the Qt documentation) double [source] # Return True if this is a double-click. z must be used to specified to color of the quadrilaterals. 12. ImageItem, optional) – If provided, control will be automatically linked to the image and changes to the control will be reflected in the image’s appearance. User Guide#. 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. MouseDragEvent# class pyqtgraph. Therefore you should read the official pyqtgraph docs, and also run the official demo with python -m pyqtgraph. Also have a look at the __main__ sections of the files in the taurus image (pyqtgraph. Handles dict mappings – user selects a text key, and the ComboBox indicates the selected value. Start with “Plotting With PyQtGraph and PyQt5” The green boxes represent Qt classes, the purple boxes are PyQtGraph classes. f42fa9c4 GraphicsWidget# class pyqtgraph. (It’s just a little less effort to use than QGridLayout) Read the Docs is a documentation publishing and hosting platform for technical documentation. The PyQtGraph library welcomes contributions from the community. - def setGLOptions (self, opts): """ Set the OpenGL state options to use immediately before drawing this item. examples. columnCount() row = legend. x to select a specific version of the repository, or use git pull to pull pyqtgraph updates from upstream (see the git documentation for more information). registerParameterType ( name, cls, override = False,) [source] # Register a parameter type in the parametertree system. 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. Contribute to epeters13/pyqtspecgram development by creating an account on GitHub. setRange ( r0, r1,) [source] # Set the upper and lower limits for values in the spinbox. The user guide provides in-depth information on the key concepts of PyQtGraph. pyqtgraph. Documentation The official documentation lives at https://pyqtgraph. setPrefix (p) [source] #. class pyqtgraph. Call signature: ``PColorMeshItem([x, y,] z, **kwargs)`` x and y can be used to specify the corners of the quadrilaterals. 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. Defaults to display based on span dtype precision: int In addition, there are PyQt-specific plotting options available such as PyQtGraph which provide a better interactive experience. color (N,4) array of floats (0. Finance Plotter, or finplot, is a performant library with a clean api to help you with your backtesting. Using QPainter. (see QGraphicsSceneMouseEvent::buttons in the Qt documentation) isEnter [source] # Returns True if the mouse has just entered the item’s shape. __init__() The user guide provides in-depth information on the key concepts of PyQtGraph. A ParameterItem is an interactive graphical representation of a Parameter. Build Process. addItem>`, : update the documentation above as well. plot(), PlotWidget, and :meth :GraphicsLayout. 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. 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 See the Parameter Trees documentation for more information. brush Brush to use when filling. PyQtGraph provides a variety of export formats for all 2D graphics. The aim of PgLive module is to provide easy way of thread-safe live plotting. GraphicsLayout. scenePos() to get the click position in scene coordinates. (if the axes in your data are ordered differently, use numpy. mouseEvents. Developer Guide#. Any 2D graphics can be exported by right-clicking on the graphic, then selecting ‘export’ from the context menu. Note that using this option may have a significant performance cost. This tutorial teaches you how to create interactive and customizable plots, and enhance your applications with real-time data visualization. PlotItem. Linear Selection and Marking# Two classes allow marking and selecting 1-dimensional data: LinearRegionItem and InfiniteLine. 5] returns a QColor corresponding to the center of ColorMap cm. See QtWidgets. This section describes mouse interaction with these widgets. image (* args, ** kargs,) [source] # Create and return an ImageView Will Parameter# pyqtgraph. Use git checkout pyqtgraph-core-x. Create GUI Applications with Python & Qt6 by Martin Fitzpatrick — (PyQt6 Edition) The hands-on guide to making apps with Python — Over 10,000 copies sold! Introduction# What is pyqtgraph?# PyQtGraph is a graphics and user interface library for Python that provides functionality commonly required in engineering and science applications. Have a look at them. See the pyqtgraph documentation here. GraphicsLayoutWidget() win. These widgets can generally be used in any Qt application and provide functionality that is frequently useful in science and engineering applications. Any single argument accepted by:func:`mkPen <pyqtgraph. See pyqtgraph. setSingleStep ( step,) [source] # Set the step size used when responding to the mouse wheel, arrow buttons, or arrow keys. 2D Graphics¶ In pyqtgraph, most 2D visualizations follow the following mouse interaction: def image (* args, ** kargs): """ Create and return an :class:`ImageWindow <pyqtgraph. I added a function: def setColumnCount(legend, columnCount): """change the orientation of all items of the legend """ def _addItemToLayout(legend, sample, label): col = legend. Class used to allow GraphicsWidgets to anchor to a specific position on their parent. All other arguments are used to show data. mkPen. 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). AAdditional parameters will be passed to the pyqtgraph. PyQtGraph displays 2D numpy arrays as images and provides tools for determining how to translate between the numpy data type and RGB values on the screen. PyQtGraph’s Helper Functions# Simple Data Display Functions# pyqtgraph. 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 setWidth ( w: int | None = None,) [source] # Set the width of this axis reserved for ticks and tick labels. Qt import QtGui, QtCore app = QtGui. linspace(-pi, pi, 100)) format: Format string to determine number of decimals to show, etc. Somehow, when I was looking at the PyQtGraph documentation, I noticed that there was a 3D Graphics function in the API. 0-1. for m in Oct 12, 2020 · Extend your PySide2 GUIs with dynamic plotting using PyQtGraph. setColor ( c,) [source] # Set the default color to use when no vertex or face colors are specified. org """ __version__ = '0. layout. ColorBarItem. Accepts a *title* argument to set the title of the window. Will show 2D or 3D image data. addPlot>. Its primary goals are to provide fast, interactive graphics for displaying data (plots, video, etc. pyqwt5: About as fast as pyqtgraph, but not quite as complete for plotting functionality. PyQtGraph’s parameter tree system works similarly to the model-view architecture used by some components of Qt: A Parameter is a purely data-handling class that exists independent of any graphical interface. The pyqtgraph documentation on addItem states that it "adds a graphics item to the view box. Despite being written entirely in python, the library is fast due to its heavy leverage of numpy for number crunching, Qt's GraphicsView framework for 2D display, and OpenGL for 3D display. Requires item strings to be unique. May 1, 2025 · Finance Plot. isExit [source] # Returns True if the mouse has just exited the item’s shape. The PyQtGraph repository on Github also has a complete set of plot examples. The tr (pyqtgraph. It is presently based on PyQwt and thus comes with This class provides the ViewBox-plus-axes that appear when using pg. - - ‘finite’ creates a break when a nonfinite points is encountered. lmmuv mykgx dks arhhyvv avazd wmco nsbh hdec hmp cev xtvy ngki dxjj vigqly rcbvb