ely
selected rectangular region.</p>
<p>axis ranges are passed as a 2-element vector of which each can be None
or None, where None indicates automatic range (adjust to data).
If mask is set to True, return a boolean mask of the cropped region.
poly is a list of vertex for a polygon.</p>
<p>If interactive is True, allows interactive selection with:
Zoom to the region to crop, and/or use CTRL+leftClick to add points and create
an polygonal selection. CTRL+rightClick remove the nearest point. Press ENTER when 