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    • H

      Unsolved DHT11 Sensor with RPI
      General and Desktop • graph rpi dht11 • • helloworldddd

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      jsulm

      @helloworldddd said in DHT11 Sensor with RPI:

      do u know how to use plot values to time, time as x axis on pyqtgraph?

      Sorry, I never used pyqtgraph. Did you check its documentation?

    • Y

      Solved How to can i stop from painting the background widget in paintevent?
      General and Desktop • qpaint qpainter graph c++ qwt • • Yash001

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      Y

      @mrjj
      Thank you sir for helping me and direction. I am able to solve this issue by

      setting the clipping area properly on graph. Use QWidget::update() instead of QWidget::repaint().
    • N

      Unsolved Problem with plotting multiple plots in the same MatplotlibWidget graph
      General and Desktop • qt4 matplotlib graph • • NilleDaWize

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      N

      Ahh I see. I'll check it out!

      Thanks for the suggestion. If you have any other ideas please let me know.

    • S

      Unsolved How would I implement the following curve editor in QT? (link inside)
      General and Desktop • graph • • sol_aries

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      aha_1980

      Hi @sol_aries

      Just read about QMouseEvent

    • RTjen

      Unsolved Question: How to find zero position/origin for Qtcharts graph
      General and Desktop • qtcharts qspline graph • • RTjen

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      608
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      No one has replied

    • mar77

      Unsolved Tools for plotting QVector3D data ?
      General and Desktop • graph data visualization charts • • mar77

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      792
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      No one has replied

    • R

      Unsolved Qt Diagramming libraries
      General and Desktop • diagram diagramming graph graphing draw • • Ramin

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      TheBadger

      @Ramin
      Actually I have never seen such a library.

      What I have done in the past (3 years ago) was to draw some elements connected to each other using Qt Quick (QML) and it worked pretty good.

      Another option is to look at the new modelling plugin that will be part of Qt Creator 3.6. And since Qt Creator is open source, you can look at how it is done and perhaps use that as a starting point.

    • A

      [SOLVED] How do I simply update scene after adding a new element?
      General and Desktop • qgraphicsview scene graph update • • alogim

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      A

      @alex_malyu
      Thank you very much alex. I just tried what you suggested and it works perfectly.

      @SGaist
      I thought about slots and timer too, as suggested in the examples on qt's site, but it requires subclassing a QGraphicsItem for each item in the QGraphicsView. The problem is, I don't know the number of items that will be generated until runtime, and apart from this, creating 10.000 classes (one for each item) would be very resource intensive, I think.
      Anyway, the method above, the one with
      QCoreApplication::processEvents () ;
      works perfectly for my purpose.
      So thanks both for your politeness: it is very nice to see such a great community :)

    • vishnu

      [Solved] Drawing Linear graph using QML canvas
      QML and Qt Quick • qml canvas qml graph chart • • vishnu

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      p3c0

      @vishnu The control will go ahead if and only if both properties are initialized. Its a normal & operation.

    • P

      Draw elements above Scene Graph
      QML and Qt Quick • quick scene graph open • • Pheelbert

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      p3c0

      Hi @Pheelbert,
      Make use of QQuickWindow::beforeRendering signal to draw the OpenGL stuff beneath QML scene.
      Have a look at this flow for more info, especially Pt. no. 8 and the example suggested by @SGaist.

    • J

      [SOLVED] QLayout does not work -> experimental Graph like widget
      General and Desktop • graph qlayout • • jjan

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      J

      @Chris-Kawa
      Sorry that was my problem didn't have seen the comment^^ Thank you :)