How can I set the x-axis as datetimes on a bokeh plot?

Question

I'm using bokeh with an ipython notebook.

I want to plot a line graph in bokeh using a pandas DataFrame containing datetimes:

import pandas as pd
from datetime import datetime as dt
from bokeh.io import output_notebook
from bokeh.charts import Bar, Line, show

df = pd.DataFrame(data=[1,2,3],
                  index=[dt(2015, 1, 1), dt(2015, 1, 2), dt(2015, 1, 3)],
                  columns=['foo'])

output_notebook()
show(Line(df))

However, bokeh uses microseconds! Why is this? How do I fix it?

Answer 1

As of bokeh 0.12.3, you can now do:

p = figure(..., x_axis_type='datetime', ...)