If the dataarray has 1 dimensional coordinates or comes from a slice
        we can show that info in the title

        Parameters
        ----------
        truncate : integer
            maximum number of characters for title

        Returns
        -------
        title : string
            Can be used for plot titles

def _title_for_slice(self, truncate=50):
        """
        If the dataarray has 1 dimensional coordinates or comes from a slice
        we can show that info in the title

        Parameters
        ----------
        truncate : integer
            maximum number of characters for title

        Returns
        -------
        title : string
            Can be used for plot titles

        """
        one_dims = []
        for dim, coord in self.coords.items():
            if coord.size == 1:
                one_dims.append('{dim} = {v}'.format(
                    dim=dim, v=format_item(coord.values)))

        title = ', '.join(one_dims)
        if len(title) > truncate:
            title = title[:(truncate - 3)] + '...'

        return title