I want to synchronize the x-axis of PyQtGraph. When the user rescales the 
X-Axis with mouse interactions (e.g. scroll-wheel while mouse on x-Axis) I 
want to see first and last tick values only when plot is in its initial 
state and when zoom-in or zoom-out other ticks will appear.

This question has a follow up here 
<https://stackoverflow.com/q/31775468/10543310> and here 
<https://stackoverflow.com/q/73240127/10543310>.
ticks = [list(zip(t_time_value, t_ticks_values))] 

*Note:* ticks can be of a large length (at least 16385).

I found setTickSpacing() 
<https://pyqtgraph.readthedocs.io/en/latest/_modules/pyqtgraph/graphicsItems/AxisItem.html#AxisItem.setTickSpacing>
 but 
not sure how to use it or it is the right one to use.


Thanks for help!

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