QtCharts sucks

[sufuk]

QtCharts sucks, it is extremly slow and there isn't any proper way to implement error bars.
I draw error bars with Box and whiskers but there isn't any way to place them on respective (x) points,
Alternative is using QCustomplot which is very expensive for non-GPL license.

So why QtCharts has many types of Charts or serries but not error bars, a lot of scientist doesn't use QtCharts because of that?

[mrjj]

Hi
Yes the API could be better. it's hard to customize or make new graph types.

• So why QtCharts has many types of Charts or serries but not error bars, a lot of scientists doesn't use QtCharts because of that?

Well if there ever was a reason, it been lost in the times. They didn't add new charts for years so
not sure it's still on the radar.

• Alternative is using QCustomplot which is very expensive for non-GPL license.
  It is ? I as under the impression it was around 100 euros, pr developer.

[JKSH]

Or Qwt, which is LGPL-ish: https://qwt.sourceforge.io/

[JoeCFD]

https://vtk.org/Wiki/VTK/Charts can be useful as well.

[VRonin]

KDChart is another alternative but once again it's GPL or Commercial

Charting is a hard task with so many possible customisations. In the past I cheated my way out of this problem using QWebEngineView and Google Charts (Box and whiskers example).