Functions to get information out of a MapCube.

I added in three functions:
_maps_have_same_number_of_x_and_y_pixels 
 - tests if all the maps have the same number of x and y pixels

data()
 - takes the image data in a mapcube and returns a 3d numpy array

meta()
 - returns the meta objects from each map in a list

These functions are handy when working with mapcubes.  Often when you have done what you have to do with your mapcubes, you just want the information out (particularly the image data).  These functions make it easy to do that.  If these functions are acceptable I'll work on the documentation and testing.

that also makes sense. thanks!



On Sun, Jun 22, 2014 at 10:04 AM, Stuart Mumford <notifications@github.com>
wrote:

> In sunpy/map/mapcube.py:
>
> >
> >          return MapCubeAnimator(self, **kwargs)
> > +
> > +    def _maps_have_same_number_of_x_and_y_pixels(self):
>
> I think:
>
> mapcube.as_array() and mapcube.all_meta() in that they should be methods
> and not properties (to make it clear they are being derived).
>
> --
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> <https://github.com/sunpy/sunpy/pull/1072/files#r14054641>.
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