I managed to put string values on the x axis(datetime data is converted to a string).
Created on the x axis QBarCategoryAxis.
Everything would be fine, but I can't adjust tick marks on the axis.

To avoid being verbose more details here https://forum.qt.io/topic/118786/can...settickcount/2

If that's not possible, say so.
Since this idea is long-standing and time-consuming.