def _axis_label_from_meta(
        pdata: dict,
        **kwargs
) -> str:
    """Generates an automated axis label from data
    using system name, variable name and variable unit.

    Args:
        pdata: plot data structure

    Returns:
        str - axis label

    """
    return f"{pdata['system']} {pdata['name']} [{pdata['var_unit']}]"