[Matplotlib-users] x-axis Label in hh:mm:ss format

[Johannes E. <ml....@gm...>]

Hi,

I have time data stored in the format hh:mm:ss and would like to plot it,
having about 4 to 6 ticks labeled in this format.
What I'm doing at the moment is to first convert my time to seconds and plot
y as function of yime in seconds.

Here the first question: Is this the way to go or is there a function I
missed which allows to directly plot from the former format?

Now I'd like to have the labels to be displayed in the hh:mm:ss format, in a
way that it automatically adopts when zooming/dezooming. Without zooming I
figured out that it is quite easy to use the xticks method, but is there a
possibility to write a function which automatically readadopts the tick
spacing?
If not, I found in the manual the dateformatter class, but if I understand
correctly, I first have to transfer the time to strftime? Or can I directly
use this class using the time starting from midnight?

Thanks for any response,
Johannes