Hide some of the symbols without replotting in QwtPlotMultiBarChart

[Younes K. <kha...@gm...>]

Hello,

I have a QwtPlotMultiBarChart with multiple symbols (groups).
I want the user to be able to hide/show some of them by clicking on a
button.
The only way I see it is to reasign the samples of the chart, and
replotting, but I'm wondering if there is an easier way to do it ?

Best regards,

-- 
Younes Khadraoui, PhD
*Co-Founder at Ostadhi.com | Research Engineer | Data Scientist |
Enterpreneur*