Navigation

    Qt Forum

    • Login
    • Search
    • Categories
    • Recent
    • Tags
    • Popular
    • Search
    1. Home
    2. Tags
    3. chart
    Log in to post

    • UNSOLVED Scroll chart, when new data come
      General and Desktop • qt5 chart scrollbar • • suslucoder  

      7
      0
      Votes
      7
      Posts
      28
      Views

      @suslucoder If your files all have the same structure (separator, data etc.), yes, you should actually.
    • UNSOLVED Creating a chart with multiple datas
      General and Desktop • qt5 chart • • suslucoder  

      29
      0
      Votes
      29
      Posts
      80
      Views

      @suslucoder said in Creating a chart with multiple datas: Should i delete them? No. Why would you?
    • UNSOLVED It does not create a chart
      General and Desktop • qt5 thread chart • • suslucoder  

      14
      0
      Votes
      14
      Posts
      30
      Views

      @suslucoder What exactly can't you understand? In the documentation @SGaist posted there is even an example with signal/slot with parameter...
    • UNSOLVED Can we set axis range with size of the series?
      General and Desktop • qt5 chart axis • • suslucoder  

      4
      0
      Votes
      4
      Posts
      17
      Views

      In the loop you use to read your file.
    • UNSOLVED Delete datas from chart series, after adding them on a chart
      General and Desktop • qt5 chart series • • suslucoder  

      5
      0
      Votes
      5
      Posts
      89
      Views

      @JonB Hmmmm, i got. actually what i want to do is scrolling my chart. I have about 20 point, and i cant see all of them on the secreen. It shows just up to the size of the axis, and the others cant seen on the secreen. There are too many datas on the right but we cannot see.
    • UNSOLVED Adjusting axis according to coming datas
      General and Desktop • qt5 chart axis qchart • • suslucoder  

      1
      0
      Votes
      1
      Posts
      15
      Views

      No one has replied

    • UNSOLVED How can I adapt my chart size according to my datas?
      General and Desktop • qt 5.4 chart ui design • • suslucoder  

      5
      0
      Votes
      5
      Posts
      45
      Views

      @Pl45m4 Thank you
    • SOLVED Getting datas from queue to series
      General and Desktop • chart qt 5 queue • • suslucoder  

      5
      0
      Votes
      5
      Posts
      33
      Views

      @JonB Thank you, it works
    • UNSOLVED How can I add txt file datas in QLineSeries?
      General and Desktop • file chart read • • suslucoder  

      2
      0
      Votes
      2
      Posts
      17
      Views

      @suslucoder As the error message tells you addSeries takes a QAbstractSeries, not a string list as parameter. You have to pass it one of the QAreaSeries, QBoxPlotSeries, QCandlestickSeries, QPieSeries, and QXYSeries. You also should tell us what data your file actually contains? If it contains x/y values then you first have to convert the data to numbers and create a QXYSeries instance and fill it with that data (https://doc.qt.io/qt-5/qxyseries.html#append).
    • UNSOLVED Read data and add it to a chart
      General and Desktop • chart timer file read real time plot plotting • • suslucoder  

      28
      0
      Votes
      28
      Posts
      152
      Views

      @SGaist Good catch. yes its x,y. It was more about num being undeclared at that point in time :) Changed as not to confuse future readers.
    • UNSOLVED How can i add timer to my code?
      General and Desktop • chart read timer • • suslucoder  

      2
      0
      Votes
      2
      Posts
      24
      Views

      Already asked and answered here: https://forum.qt.io/topic/122197
    • UNSOLVED Gaps in QLineSeries
      General and Desktop • charts chart qlineseries • • fantaz  

      4
      1
      Votes
      4
      Posts
      795
      Views

      When using line series, we've had severe performance problems. We end up with thousands of series to handle all of the gaps and have to create parallel scatter series because we want icons for each point that aren't part of the standard icon set. We pay a huge cost both constructing and destructing the series. Seems like it may be refreshing on each add series, but even removeAllSeries is slow. Have tried many things to suspend the painting, but with no timing effect. Any ideas on how to have many gaps without destroying performance?
    • UNSOLVED How to use model to update Chart data
      QML and Qt Quick • qml widget model chart tableview table • • SaranshVora  

      1
      0
      Votes
      1
      Posts
      651
      Views

      No one has replied

    • UNSOLVED ChartView and scrollbar
      QML and Qt Quick • qml chart scroll bar • • SeeLook  

      5
      0
      Votes
      5
      Posts
      2531
      Views

      Yes, in another project. QGraphicsView lays a top of QAbstaractScrollArea, so scroll bars appears there out of a box. But it requires a few lines of code to add scrolling by drag a scene. This time I needed QML way.
    • SOLVED Qt Charts crash
      QML and Qt Quick • qt 5.7 charts chart controls 2 material design • • orzel1244  

      4
      0
      Votes
      4
      Posts
      3225
      Views

      You're welcome ! Since you have it working now, please mark the thread as solved using the "Topic Tools" button so that other forum users may know a solution has been found :)
    • [Solved] Drawing Linear graph using QML canvas
      QML and Qt Quick • qml chart graph qml canvas • • vishnu  

      18
      0
      Votes
      18
      Posts
      6512
      Views

      @vishnu The control will go ahead if and only if both properties are initialized. Its a normal & operation.
    • QML Bar Chart with live-updating data from C++
      QML and Qt Quick • qml c++ chart • • Hedge  

      2
      0
      Votes
      2
      Posts
      1075
      Views

      Hi @Hedge, You have following ways to do it: Defining QML Types from C++ In short create a QObject derived class and register it using qmlRegisterType so that it is available in QML. Exposing Attributes of C++ Types to QML Create a QObject derived class , add some public slots or Q_INVOKABLE functions and make these available by setting that class as a contextProperty. In both the cases it will be good idea to provide some properties defined as Q_PROPERTY with their respective signals so that QML gets notified on changes in the values of these properties from C++.
    • QML: QtCharts 2.0 “Invalid grouped property access”
      General and Desktop • qml chart • • fhdns  

      2
      0
      Votes
      2
      Posts
      1245
      Views

      Hi, QtCharts is a commercial package, you should rather contact the Qt Company through your Qt Account Support Center link.
    • 27 April, 2015. QtitanChart 4.0.2 has been released!
      Announcements • chart component • • DevMachines  

      1
      0
      Votes
      1
      Posts
      459
      Views

      No one has replied

    • QML Charts: How to edit font size of Axis
      QML and Qt Quick • font chart • • morker  

      2
      0
      Votes
      2
      Posts
      3578
      Views

      BarSeries { id: currentPlot axisX: BarCategoryAxis { id: categoryAxis labelsFont:Qt.font({pointSize: 6}) Qt.font function accept an javascript object with all keys relevant to font. The most commonly used properties are: string font.family bool font.bold bool font.italic bool font.underline real font.pointSize int font.pixelSize
    • Can I directly access the vertex-buffer of a QQuickItem or do I have to use openGL itself?
      QML and Qt Quick • opengl chart qquickitem vbo updatepaintnode vertex buffer • • themts  

      3
      0
      Votes
      3
      Posts
      873
      Views

      vertexData() returns only the data in ram and not the real VBO which is stored in GPU-ram. As soon as you mark it as dirty it gets completely copied into GPU. Meanwhile I have implemented a direct opengl-way where I create the VBO myself. Thanks anyway! cu
    • I'm looking for a high performance 2D chart-component (qt-quick)
      General and Desktop • opengl chart • • themts  

      2
      0
      Votes
      2
      Posts
      1544
      Views

      Hi and welcome to devnet, The best way to have information for 1 and 2 is to contact the Qt Company directly. These two modules are available to the commercial customers but you can try them with the trial package. AFAIK, Qwt only provides widgets I don't know that one Hope it helps