QAbstractListModel and QCustomPlot

Bob64

@SGaist Yes, sorry - you are correct of course. I must admit that I had got more interested in the question about how well QCustomPlot works with QML in the first place. I guess I had assumed that there would be some way to define the plot from a model but you are correct that it is not obvious.

xiliang-mengqi

@Bob64 I am doing same work, but I think it is impossible. Because QcustomPlot depends on QWidgets and event loop, but the QML is other thing. In an app, they , event loop and QML, cann't run at same time. It is pity, but you can find other lib to achieve this function or you can try to recode QCustomPlot by QML which is meanful I think.

Tobias83

OK, I gave up QCustumPlot und found out that there is QtCharts. I wil try with QtCharts and QML.

Tobias

SGaist

You should rather go with Qt Graphs. Qt Charts is also graphics view based although QML is also supported and is being deprecated.

Tobias83

@SGaist Hello SGaist,

in QtCharts I can use a model like this

ChartView {
     antialiasing: true
     anchors.fill: parent
     legend.visible: false
     LineSeries {
         VXYModelMapper {
         model: Hardcorechartmodelseries
            xColumn: 0
            yColumn: 1
        }
    }
}

Is there also this opportunity in QtGraphs?

Tobias

SGaist

The XYModelMapper is also there.

Tobias83

@SGaist I need also some help with QtGraphs: I changed all the "Charts" to "Graphs" in the cmake file and qml file, and in the QAbstractTableModel. The import QtGraphs prompt in QtCreator recognizes the package, but for this

GraphsView {
  antialiasing: true
  anchors.fill: parent
  legend.visible: false
  LineSeries {
    VXYModelMapper {
      model: Hardcorechartmodelseries
      xColumn: 0
      yColumn: 1
    }
  }
}

I get a "unkown component" error in QtCreator for the prompts GraphsView, LineSeries and VXYModelMapper

I have no idea, what wents wrong. The former QtCharts even drawed some graphs.

SGaist

Did you change your QML imports as well ?

Tobias83

@SGaist Yes, and import QtGraphs is found by QtCreator ...

Tobias83

@SGaist I made a seperate issue for this problem in the Qt forum:
qtcreator-errors-with-qtgraphs-qml

Tobias