Hi @disberd, thank you very much.
You solved my problem and possibly the problem of those that use PlotlyJS and have to deal with quarterly or monthly data. In PlotlyJS the docs are quite limited, and the adaptation of code from Plotly.js into PlotlyJS proved to be not so easy for me (and I could not find any other issue related to this point in any forum).
I do want to use the x-axis formatted as data inputs. The point is that I did not know how to get an output as your second example provides. Thanks a lot.