Pyqtgraph forum My idea is to create a couple of methods that should display additional information in the legend, like maximum or minimum values of plotted data. Jan 18, 2017 · Sorry for being not precise enough. English It is presently in early development and has a narrower scope than PyQtGraph--it will focus on visualization without the GUI toolkit features provided by PyQtGraph. as well as the ability to edit a colour gradient. Hi everyone, I am trying to plot a red loop (isocurve) that correspond to the level z=2 of a given surface. py", line 367, in mouseMoveEvent self. Jan 12, 2022 · If you were to run the examples provided with pyqtgraph, does a plot window show? Assuming you have installed the latest pyqtgraph 0. . sigSceneMouseMoved. Oldest to Newest. 12. 4k Views. examples. py. Objective: keep using wildcard imports for PySide while obeying pyqtgraphs import rules. Hope it helps. It is intended for use in mathematics / scientific / engineering applications. You need to convert these to numerical value before plotting. showtime) self Jun 4, 2020 · martin | 2020-06-04 21:16:49 UTC | #2. When i run pyqtgraph self. But, what about QtChart? It is written in C++ and also should be efficient (I Jun 17, 2015 · I have 3 linked views, linked by X axis. I settled for PyQtChart because it was handling better DatetimeSeries, but happy to be proven wrong (and share the pyqtgraph code, just didn't want to make the post too big). Jun 25, 2016 · I am working on my first PyQt program and feel like I am missing something obvious about ImageItems or GraphicsScenes. Jul 5, 2018 · @SGaist said in QML and Qt Widgets (PyQtGraph): Hi, You might want to check KDAB's DeclarativeWidgets project. Now, I need to draw a GUI window with some information regarding this square waveform. I know that pyqtgraph is NumPy based and NumPy is a very optimized package because the core was written in C and Fortran languages. Dec 8, 2021 · Hi all; Now, another problem. Mar 6, 2022 · Traceback (most recent call last): File "C:\Users\User\AppData\Roaming\Python\Python39\site-packages\pyqtgraph\widgets\GraphicsView. I saw a post on the pyqtgraph support forum that indicates to use the setStyle function with the keyword 'tickFont' but I can not figure out how to use it properly. py and MultiplePlotAxes. Language. After reading online at various sites, I have finalized pyqtgraph and now I am trying to learn through some Mar 5, 2022 · I have tried PyQtChart and pyqtgraph on PyQt5, but with both libs, I am ending up redrawing the whole chart for each data that I receive, which doesn't feel optimal. In the example, its written like this: from pyqtgraph. setTicks() to customize the text displayed on the axis. My overall goal is to have several clickable regions overlaid on an image, and if the plot boundary of any region is clicked I get a signal with the ID of that region. Scheduled Pinned Locked Moved Unsolved Language Bindings 1 Posts 1 Posters 1. I searched on the web but I did not found information about this topic. Still, plotting the data with pyqtgraph also takes much longer then expected, probably because it redraws the widget everytime when using the plot() function. Maybe I am able to create the isocurve, but I cannot overlap it to the grayscale image. PyQtGraph's ImageView widget includes a histogram with: a moveable region that defines dark and light levels. Qt import QtCore, QtGui PyQtGraph is a pure-python graphics and GUI library built on PyQt / PySide and numpy. Apparently, PySide. Oldest to Newest PyQtGraph is a pure-python graphics and GUI library built on PyQt / PySide and numpy. The documentation of pyqtgraph didn't help me and google neither. My data is a Jun 8, 2020 · I also posted in the pyqtgraph forum here. self. For static zoom, you can also use AxisItem. Dec 28, 2020 · Hello Martin: I have a question: Is it possible to define 2 Y-axes in a line plot in pyqtgraph. Apr 12, 2023 · This forum is for discussion of pyqtgraph, an open source scientific graphics library for Python and Qt. Jan 12, 2022 · I have to read a square waveform of frequency 100Hz to 20kHz on GPIO of raspberry. timer1. Regards Robert Apr 17, 2017 · PyQTGraph - X axis updating with minutes. Apr 1, 2015 · As you have found, pyqtgraph does not support plotting with datetime objects. @scaracciolo welcome to the forum -- this is a great first question! On popularity, there are a couple of things I think -- if I remember rightly to begin with QtChart wasn't actually available for PyQt4/5. I have a 2d ImageItem displayed with PyQtGraph using ImageView. timer1 = QTimer() self. path list. Thanks for your help. If so, how does it work? I haven’t found a solution. QtCore and PySide. 3 from pypi, you would run python -m pyqtgraph. Thank you SGaist! So there is nothing within QML / QtQuick that can allow for the integration of a QtWidget by default? The DeclarativeWidget project looks good! I will research more into it. That would help to pinpoint whether pyqtgraph works on your machine. (Output image) I have been trying for days, but Apr 21, 2017 · Also you don't need to hard code the last index of the list like [60] if you use the slicing system [-1] However, though I've not used pyqtgraph, I think it works on numpy arrays so really you would be better to use those (there are numpy functions like roll() that do the same as the above function but slicing also works on numpy arrays and is VERY fast). opengl 3D system entirely. What is the best practice to plot large arrays? The pyqtgraph examples, although extensive, didn't help me much further PyQtGraph is a pure-python graphics and GUI library built on PyQt / PySide and numpy. Something like this: If I use only one PlotDataItem with nan-separated curves then each boundary sends the same signal. I am trying to insert a graph in my PySide GUI using pyqtgraph. If you want to make pyqtgraph available system-wide, copy the folder to one of the directories listed in python's sys. Discuss code, ask questions & collaborate with the developer community. mapToScene(lpos)) TypeError: arguments did not match any overloaded call: mapToScene(self, QPoint): argument 1 has unexpected type 'QPointF Dec 18, 2023 · Hello, I have an annoying problem when updating text entries of a legend created with pygtgraph / GraphicsLayoutWidget which is embedded in a QWidget. These two features allow users to edit/ Discussion for users and developers of pyqtgraph. I have checked using piscope the waveform at the required GPIO. PyQtGraph is a pure-python graphics and GUI library built on PyQt / PySide and numpy. frame = PlotWidget(Dialog) . timeout. That works great but when I try to display my original label than some white spaces are added to PyQtGraph is a pure-python graphics and GUI library built on PyQt / PySide and numpy. However, when I switch one plot to log X mode, the others do not switch to log x mode, but they pop in to zoom way in to the log version All that is needed is for the pyqtgraph folder to be placed someplace importable. Jan 14, 2023 · Explore the GitHub Discussions forum for pyqtgraph pyqtgraph. QtGui needs to be imported through pyqtgraph for the package to work properly. It is intended for use in mathematics / scientific / engineering applications. connect(self. In the long term, we hope VisPy will be able to replace Qt as the rendering engine for 2D graphics, and replace the pyqtgraph. (Y-axis left for row 1, Y-axis right for row 2). Jun 4, 2020 · Hi everybody, I would like to know the differences between QtChart/s and pyqtgraph, especially performance. Most people will prefer to simply place this folder within a larger project folder. emit(self. This works great. This is an expansion of two pyqtgraph examples: PlotSpeedTest. Oct 13, 2016 · Here is some code that I think shows a practical example of what it is you are after. xglowe klp qab hiufdp wpr kuds cwhzu goku sas ksogf