add title to collection of pandas hist plots
Question: I'm looking for advice on how to show a title at the top of a collection of
histogram plots that have been generated by a pandas df.hist() command. For
instance, in the histogram figure block generated by the code below I'd like
to place a general title (e.g. 'My collection of histogram plots') at the top
of the figure:

    
    
    data = DataFrame(np.random.randn(500).reshape(100,5), columns=list('abcde'))
    axes = data.hist(sharey=True, sharex=True)
    

I've tried using the _title_ keyword in the hist command (i.e. title='My
collection of histogram plots'), but that didn't work.

The following code _does_ work (in an ipython notebook) by adding text to one
of the axes, but is a bit of a kludge.

    
    
    axes[0,1].text(0.5, 1.4,'My collection of histogram plots', horizontalalignment='center',
                   verticalalignment='center', transform=axes[0,1].transAxes)
    

Is there a better way?


Answer: You can use `suptitle()`:

    
    
    import pylab as pl
    from pandas import *
    data = DataFrame(np.random.randn(500).reshape(100,5), columns=list('abcde'))
    axes = data.hist(sharey=True, sharex=True)
    pl.suptitle("This is Figure title")
    

