Dear all,
I hope some of you could help me out. I am currently trying to generate
some timetables using matplotlib.pyplot.plot_date, having the time-axis
on the y-axis. Typically, one would like to read these plots from top to
bottom, from older to newer items (future on the bottom). Unfortunately,
the default enumeration of the y-axis is the other way around, and it
resists my attempts to invert its direction e.g. by changing limits
using matplotlib.pyplot.ylim (Traceback below). I found a quite old
entry in stackoverflow which is most probably outdated, at least the
proposed solution did not work for me...
(http://stackoverflow.com/questions/5804969/displaying-an-inverted-vertical-date-axis).
Since the longish traceback seems to try to tell me I did not understand
some kind of important - even trivial - point about those datetime-axis
maybe some of you came about this problem before?
Thanks, Gerd
P.S.: Traceback after trying to use something like
"matplotlib.pyplot.ylim(ymax,ymin)":
> Traceback (most recent call last):
> File "C:\Users\gwellenr\Desktop\Test_Sabine\Plot_csv.py", line 187,
> in <module>
> matplotlib.pyplot.savefig(save_path+'test.png')
> File "C:\Python27\lib\site-packages\matplotlib\pyplot.py", line 561,
> in savefig
> return fig.savefig(*args, **kwargs)
> File "C:\Python27\lib\site-packages\matplotlib\figure.py", line
> 1421, in savefig
> self.canvas.print_figure(*args, **kwargs)
> File "C:\Python27\lib\site-packages\matplotlib\backend_bases.py",
> line 2220, in print_figure
> **kwargs)
> File
> "C:\Python27\lib\site-packages\matplotlib\backends\backend_agg.py",
> line 505, in print_png
> FigureCanvasAgg.draw(self)
> File
> "C:\Python27\lib\site-packages\matplotlib\backends\backend_agg.py",
> line 451, in draw
> self.figure.draw(self.renderer)
> File "C:\Python27\lib\site-packages\matplotlib\artist.py", line 55,
> in draw_wrapper
> draw(artist, renderer, *args, **kwargs)
> File "C:\Python27\lib\site-packages\matplotlib\figure.py", line
> 1034, in draw
> func(*args)
> File "C:\Python27\lib\site-packages\matplotlib\artist.py", line 55,
> in draw_wrapper
> draw(artist, renderer, *args, **kwargs)
> File "C:\Python27\lib\site-packages\matplotlib\axes.py", line 2086,
> in draw
> a.draw(renderer)
> File "C:\Python27\lib\site-packages\matplotlib\artist.py", line 55,
> in draw_wrapper
> draw(artist, renderer, *args, **kwargs)
> File "C:\Python27\lib\site-packages\matplotlib\axis.py", line 1091,
> in draw
> ticks_to_draw = self._update_ticks(renderer)
> File "C:\Python27\lib\site-packages\matplotlib\axis.py", line 945,
> in _update_ticks
> tick_tups = [t for t in self.iter_ticks()]
> File "C:\Python27\lib\site-packages\matplotlib\axis.py", line 889,
> in iter_ticks
> majorLocs = self.major.locator()
> File "C:\Python27\lib\site-packages\matplotlib\dates.py", line 802,
> in __call__
> self.refresh()
> File "C:\Python27\lib\site-packages\matplotlib\dates.py", line 820,
> in refresh
> self._locator = self.get_locator(dmin, dmax)
> File "C:\Python27\lib\site-packages\matplotlib\dates.py", line 896,
> in get_locator
> raise ValueError('No sensible date limit could be found in the '
> ValueError: No sensible date limit could be found in the AutoDateLocator.
------------------------------------------------------------------------------
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