ts.plot() pandas: No plot!

Jason Swails jason.swails at gmail.com
Mon Feb 1 09:18:41 EST 2016

On Sun, Jan 31, 2016 at 9:08 PM, Paulo da Silva <
p_s_d_a_s_i_l_v_a_ns at netcabo.pt> wrote:

> Às 01:43 de 01-02-2016, Mark Lawrence escreveu:
> > On 01/02/2016 00:46, Paulo da Silva wrote:
> ...
> >>
> >
> > Is it as simple as adding a call to ts.show() ?
> >
> Thanks for the clue!
> Not so simple however.
> Needed to do
> import matplotlib.pyplot as plt
> plt.show()

​What you saw ts.plot() return was the matplotlib artists (the things that
will be drawn on whatever "canvas" is provided -- either saved to an image
or drawn to a GUI widget).  So whenever you see this kind of return value,
you know you need to call the matplotlib.pyplot.show function in order to
generate a canvas widget (with whatever backend you choose) and draw it.

If you want to do this kind of interactive plotting (reminiscent, I've
heard, of Matlab), I would highly recommend checking out IPython.  You can
use IPython's notebook or qtconsole and embed plots from matplotlib
directly in the viewer.  For example, try this:

ipython qtconsole

This opens up a window, then use the magic command "%matplotlib inline" to
have all plots sent directly to the ipython console you are typing commands
in.  I've found that kind of workflow quite convenient for directly
interacting with data.


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