Plotting advanced graphs with QML

[Kofr]

Hi, I am looking for good solutions of making advanced customizable 2d graphs plots in QML.
What solutions exest? or do I have to create my own in C++?

[nx7z]

Best solution for me, so fare is using qcustomplot with following extension:

http://www.qcustomplot.com/index.php/support/forum/172

QCustomPlot it under the GPL... but commercial licence is available

[A Former User]

@Kofr

Chart.js for QML looks interesting, I haven't tried it though.

If you get it working, report back and let us know.

[hamer]

I have used QChart (=port of Chart.js). Chart.js works pretty well if you need basic charting (for instance no interaction with the chart). The Qml port relies on an old Chart.js version which does not support multi-axis. Also you have to pass well-proprocessed data to the chart to get correct axis labeling, grids, etc.

Qt also offers a charting component with the professional licenses but I have not tried this.

[vishnu]

@hamer @nx7z @Kofr

1. Will Chart.js works for android platform. I mean on touch screens will the graph be able to support pinch to zoom features? or just zooming with 2 buttons "+" and "-".
2. Can anyone please explain me ,How to add this library to the project? Thanks

[hamer]

QChart is static (no pinch, drag, etc.). It just displays the data - everything else has to be developed by yourself. The QChart project includes a sample Qml file which you can use for testing.

[Vincent007]

@Kofr You can use Qt Charts

[vishnu]

@Vincent007
Is it free of cost? I see that It will be included in 5.6. How about adding it to 5.5? any idea? Thanks

[Vincent007]

@vishnu Yes, if you can accept GPL. I tried Qt charts in Qt 5.6. It works. You can build Qt charts by yourself. http://doc.qt.io/QtCharts/qtcharts-getting-started.html