.. py:function:: maxvalue(fs, [area]) Computes the maximum of all the values in ``fs``. :param fs: input fieldset :type fs: :class:`Fieldset` :param list area: area as [North, West, South, East] :rtype: number or None If ``area`` is specified only points within it will be included in the computation. Missing values are ignored, and if there are no valid values at all, :func:`maxvalue` returns None.
.. mv-minigallery:: maxvalue