code: def NonUniformImage_axes(img):
      
      xmin = 0
      xmax = img.shape[1]-1
      ymin = 0
      ymax = img.shape[0]-1
      x = _np.linspace(xmin, xmax, img.shape[1])
      y = _np.linspace(ymin, ymax, img.shape[0])
      return x, y
docs: Returns axes *x, y* for a given image *img* to be used with :func:`scisalt.matplotlib.NonUniformImage`.
  
      Returns
      -------
      x, y : float, float