code: def building(shape=None, gray=False):
      
      # TODO: Store data in some ODL controlled url
      name = 'cms.mat'
      url = URL_CAM + name
      dct = get_data(name, subset=DATA_SUBSET, url=url)
      im = np.rot90(dct['im'], k=3)
  
      return convert(im, shape, gray=gray)
docs: Photo of the Centre for Mathematical Sciences in Cambridge.
  
      Returns
      -------
      An image with the following properties:
          image type: color (or gray scales if `gray=True`)
          size: [442, 331] (if not specified by `size`)
          scale: [0, 1]
          type: float64