.. py:function:: datainfo(fs) Returns a dictionary containing some metadata for each field in ``fs``. :param fs: input fieldset :type fs: :class:`Fieldset` :rtype: list of dict The returned dict contains the following members: * index: the index of the field in the fieldset (indexing starts at 0) * number_present: the number of non-missing values * number_missing: the number of missing values * proportion_present: the normalised proportion of the non-missing values to the total number of values ([0-1]) * proportion_missing: normalised the proportion of the missing values to the total number of values ([0-1])
.. mv-minigallery:: datainfo