title: How to place a text box directly below legend in matplotlib?
body: <p>Using <code>matplotlib</code>, I'd like to place a text box below the legend, containing some notes about the figure. My legend is outside the axes to the right. My plan was to find the legend's position in the figure's frame of reference, then use the <code>text</code> method of the figure to place my notes. However, I can't <em>figure</em> out how to get those legend coordinates. Any suggestions or alternative plans would be much appreciated.</p>