Create a Holoview NdLayout from a dictionnary of chart objects

def ndlayout_(self, dataset, kdims, cols=3):
        """
        Create a Holoview NdLayout from a dictionnary of chart objects
        """
        try:
            return hv.NdLayout(dataset, kdims=kdims).cols(cols)
        except Exception as e:
            self.err(e, self.layout_, "Can not create layout")