timeDerivative() ======================= **Signature:** .. code-block:: python time_derivative(in_place: bool = False) -> TimeSeries `Detailed Documentation `_ The hec-python-library equivalent of Jython method **timeDerivative()**: .. include:: _in_place.rst **Example:** .. code-block:: python ts2 = ts1.time_derivative() ==== **Signature:** .. code-block:: python itime_derivative() -> TimeSeries Convenience method for calling ``timeDerivative(...)`` with ``in_place=True``. **Example:** .. code-block:: python ts.itime_derivative()