QtCharts : How create bar chart with error bars?

[NuttinGo]

Hi,

Is it possible to create bar chart with error bars with QtCharts ? Or to find bars position of a QChart?

I want to modelize the standard deviation of each bar..

I already tried to find the position of each bar with "scene" argument of QChart but I didn't success.

Thanks for your help.

[VRonin]

do you have a visual example? You could just add 2 more series with the lower and upper confidence level on the same x and y axis...

[NuttinGo]

I have the firt chart for the moment and i want the second graph

[VRonin]

Image upload doesn't work, see https://forum.qt.io/topic/62615/how-to-insert-image-on-this-forum

[NuttinGo]

I want a chart like that.
http://images.google.fr/imgres?imgurl=http%3A%2F%2Fwww.ats.ucla.edu%2Fstat%2Fstata%2Ffaq%2Fbarcap1.gif&imgrefurl=http%3A%2F%2Fwww.ats.ucla.edu%2Fstat%2Fstata%2Ffaq%2Fbarcap.htm&h=278&w=413&tbnid=FWpc-v4UiWo_7M%3A&vet=1&docid=sdXt_RvY3x-Z7M&ei=5gMqWIjxGdayjwOdoL_wCQ&tbm=isch&iact=rc&uact=3&dur=1506&page=0&start=0&ndsp=26&ved=0ahUKEwiI_IrQ8ajQAhVW2WMKHR3QD54QMwgeKAEwAQ&bih=723&biw=1518

[VRonin]

Probably you can just add a Box Whiskers series with just the whiskers http://doc.qt.io/qt-5/qtcharts-boxplotchart-example.html

[NuttinGo]

Good idea but I need a grouped bar chart for a scientific article.

[NuttinGo]

No idea ?

[VRonin]

reimplementing the paint of the chart is of course a solution but painful

[NuttinGo]

UP!
I don't have solution.

[NuttinGo]

UP! Please :)

[MElectronVolt]

I want to veer off-topic slightly, but I think it's a shame that it's currently impossible to create scientific graphs using Qt. Error bars are essential for plotting functions or displaying data points.

I hope that the Qt team will eventually enable scientists and data scientists to fully utilize this framework.

Thank you to everyone at Qt 👍👏. I'm seriously considering purchasing a commercial license just to support your future efforts.

[JoeCFD]

@MElectronVolt VTK may have some options for scientific graphs. VTK was started for rendering of scientific data. Qt was not. Good news is you can use mix Qt with VTK.