how rotate axis title

[Andell]

But how can i ad my widget to the plot? Becouse the plot is in a frame and adding widget next to the plot doesn't look like part of it (to understand, I have 3 plots, but in the third one a need special label with names instead of numbers)

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Added after 10 minutes:

I solved it The trick was in QGroupBox, I just added the plot without frame and the text label. Anyway, thanks for the idea !