============================================================
Computing the First Order Derivative with Forward Difference
============================================================
:doc:`/SingleStepClassifiers/NonCausalStep/index`

This step applies the *Forward Difference* method to approximate the first order derivative of a function or a time series. Note that step size(s) are known a priori for a time series.

.. rubric:: Input Parameters

1. A function or a time series

2. Step size(s)

.. rubric:: Output Parameters

1. First derivative of a function or a time series

.. rubric:: Workflow

.. image:: workflow.svg


.. rubric:: Algorithm

:doc:`/Algorithms/ForwardDifference/index`

.. rubric:: References

- R.\  L. Burden and J. D. Faires, Numerical Analysis, Fifth Edition, PWS Publishing Co. Boston, MA, 1993.