docs: def automeshgrid(
          x, y, step=0.02, xstep=None, ystep=None, pad=0.5, xpad=None, ypad=None
  ):
      """Make a meshgrid, inferred from data."""
      if xpad is None:
          xpad = pad
      if xstep is None:
          xstep = step
      if ypad is None:
          ypad = pad
      if ystep is None:
          ystep = step
      xmin = x.min() - xpad
      xmax = x.max() + xpad
      ymin = y.min() - ypad
      ymax = y.max() + ypad
      return meshgrid(xmin, xmax, step, ymin, ymax, ystep)