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qt 5.8, qt chart and quasi real time chart update

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  • S Offline
    S Offline
    sieciech
    wrote on last edited by
    #1

    Hi All,

    i want to ask you all whether using qtChart its possible to do quasi realtime plotting? I mean to for instance to update chart in definded interval of time.
    I find topic: https://forum.qt.io/topic/28708/plot-a-graph-with-real-time-data, which is quite old and mostly there is no answer wrt qtCharts, only suggestion to use qwt or qtcustomPlot or 3rd party libraries.

    regards

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    • mrjjM Offline
      mrjjM Offline
      mrjj
      Lifetime Qt Champion
      wrote on last edited by
      #2

      Hi
      What about
      http://doc.qt.io/qt-5/qtcharts-qmloscilloscope-example.html
      It uses a timer so not real -"real time" but maybe close enough ?

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      • VRoninV Offline
        VRoninV Offline
        VRonin
        wrote on last edited by
        #3

        In QWidgets you can use QVXYModelMapper and add/remove rows in your model to add/remove data points

        "La mort n'est rien, mais vivre vaincu et sans gloire, c'est mourir tous les jours"
        ~Napoleon Bonaparte

        On a crusade to banish setIndexWidget() from the holy land of Qt

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