.. _fplot:

Fplots
------

MATLAB includes another 2-D plotting function that comes in handy when
working with either function handles, anonymous functions, or symbolic
math functions (:ref:`function-handles`, :ref:`symbODE`). The plot,
annotations, and options are the same as the ``plot`` function. However,
instead of passing vectors for the :math:`x` and :math:`y` data, we give
``fplot`` a function and a range of values for the :math:`x` axis. The
default :math:`x` axis range is :math:`-`\ 5 to 5.

In addition to being convenient when working with function handles or
symbolic math functions, ``fplot`` also correctly handles plotting
difficulties, such as data discontinuities. A good example of this comes
from the trigonometric tangent function, shown in figure
:numref:`fig-tanFplot`,

   ::

      >> fplot(@(x) tan(x), [0 2*pi])

.. _fig-tanFplot:

.. figure:: tanFplot.png
   :figclass: center-caption
   :align: center
   :width: 60%
   :alt: The fplot function handles the data discontinuities of the tangent function.

   The ``fplot`` function handles the data discontinuities of the tangent
   function.

.. note::

    Now work on :ref:`HomeRunHW`.