Plotting of millisecond frequency broken

[changhiskhan]

from stackoverflow:

I am trying to create a plot waith an x range of e.g. 500 milliseconds.

rng = date_range(s,periods=500,freq="U")
df = DataFrame(randn(500),index=rng,columns=["A"])

to plot column A:

df["A"].plot()
The whole plot will be squeezed into a single spike because the x range is defined from Jan-2011 until Jul-2014.

Is there a way to change this?

[azjps]

With this matplotlib commit (I think for matplotlib 1.3.0+), there's better microsecond resolution handling with the default matplotlib.dates.AutoDateLocator than PandasAutoDateLocator - the matplotlib locator can plot ticks in units of microseconds while the pandas locator doesn't plot ticks with resolution better than milliseconds. It would be nice to either update PandasAutoDateLocator to account for this or not set this locator as the default when pandas is imported. (Should I raise this as a separate issue?)