Remove a column of data.

        Args:
            name (str) : name of the column to remove

        Returns:
            None

        .. note::
            If the column name does not exist, a warning is issued.

def remove(self, name):
        ''' Remove a column of data.

        Args:
            name (str) : name of the column to remove

        Returns:
            None

        .. note::
            If the column name does not exist, a warning is issued.

        '''
        try:
            del self.data[name]
        except (ValueError, KeyError):
            import warnings
            warnings.warn("Unable to find column '%s' in data source" % name)