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High performance live chart

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  • oria66O Offline
    oria66O Offline
    oria66
    wrote on last edited by
    #2

    Hello @BartBlackMagic. The Qt Charts are not famous for their performance with real-time real data. Other people may say that use Qwt or QCustomPlot, but I would rather prefer Qt Charts with all its defects. Concretely, I love Qml, so why go out and find a 3rd party plotter?

    In your case, I face a similar problem last months. I choose the first option that you show. And it works pretty well for me.

    The truth is out there

    1 Reply Last reply
    1
    • M Offline
      M Offline
      MAthias_Va
      wrote on last edited by MAthias_Va
      #3

      @oria66 this is exactly what I need to do too, can you provide an example code!

      ODБOïO oria66O 2 Replies Last reply
      0
      • M MAthias_Va

        @oria66 this is exactly what I need to do too, can you provide an example code!

        ODБOïO Offline
        ODБOïO Offline
        ODБOï
        wrote on last edited by
        #4

        http://qwt.sourceforge.net/
        https://www.qcustomplot.com/

        M 1 Reply Last reply
        0
        • ODБOïO ODБOï

          http://qwt.sourceforge.net/
          https://www.qcustomplot.com/

          M Offline
          M Offline
          MAthias_Va
          wrote on last edited by
          #5

          @LeLev Thanks for your suggest, I think I can't use third party as I already crossed compiled my device with only Qt libraries!

          JKSHJ 1 Reply Last reply
          0
          • GrecKoG Offline
            GrecKoG Offline
            GrecKo
            Qt Champions 2018
            wrote on last edited by
            #6

            What about QtCharts with VXYModelMapper ?

            M 1 Reply Last reply
            0
            • M MAthias_Va

              @oria66 this is exactly what I need to do too, can you provide an example code!

              oria66O Offline
              oria66O Offline
              oria66
              wrote on last edited by
              #7

              @MAthias_Va. Give some time to isolate an example from my code. Is proprietary code, so I must change a lot of things. I will send you in your post, ok? The developers must help us each other.

              The truth is out there

              M 1 Reply Last reply
              0
              • M MAthias_Va

                @LeLev Thanks for your suggest, I think I can't use third party as I already crossed compiled my device with only Qt libraries!

                JKSHJ Offline
                JKSHJ Offline
                JKSH
                Moderators
                wrote on last edited by
                #8

                @MAthias_Va said in High performance live chart:

                I think I can't use third party as I already crossed compiled my device with only Qt libraries!

                You can cross-compile the 3rd party libraries later, right?

                Qt Doc Search for browsers: forum.qt.io/topic/35616/web-browser-extension-for-improved-doc-searches

                M 1 Reply Last reply
                0
                • oria66O oria66

                  @MAthias_Va. Give some time to isolate an example from my code. Is proprietary code, so I must change a lot of things. I will send you in your post, ok? The developers must help us each other.

                  M Offline
                  M Offline
                  MAthias_Va
                  wrote on last edited by
                  #9

                  @oria66 that would be great, thanks!

                  1 Reply Last reply
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                  • GrecKoG GrecKo

                    What about QtCharts with VXYModelMapper ?

                    M Offline
                    M Offline
                    MAthias_Va
                    wrote on last edited by
                    #10

                    @GrecKo I will check it, thanks

                    1 Reply Last reply
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                    • JKSHJ JKSH

                      @MAthias_Va said in High performance live chart:

                      I think I can't use third party as I already crossed compiled my device with only Qt libraries!

                      You can cross-compile the 3rd party libraries later, right?

                      M Offline
                      M Offline
                      MAthias_Va
                      wrote on last edited by
                      #11

                      @JKSH I followed this method, https://wiki.qt.io/RaspberryPi2EGLFS to cross compile

                      1 Reply Last reply
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