Graphical Functions
What Is a Graphical Function?
A graphical function is a function defined graphically by a
flow graph that includes Stateflow action language.
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Example of Using a Graphical Function
This figure shows a graphical function side by side in a Stateflow chart
with the transition that calls it:
In this example, the function z = f(x,y) is
called in the condition action of the transition from state A to
state B. The function is defined using symbols
that are valid only within the function itself. The function is called
using data objects available to states A and B and
their parent states (if any).
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Advantages of Using Graphical Functions
Graphical functions are similar to textual functions such as
C and MATLAB functions in these ways:
Unlike C and MATLAB functions, however, graphical functions
are native Stateflow graphical objects. You use the Stateflow Editor
to create them, and they reside in your Stateflow chart. This
property makes graphical functions easier to create, access, and manage
than textual custom code functions, whose creation requires external
tools, and whose definition resides separately from the chart.
For more information, see Using Graphical Functions to Extend Actions.
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