feval (MATLAB Function Reference)

Function evaluation

Syntax

[y1,y2, ...] = feval(function,x1,...,xn)

Description

[y1,y2...] = feval(function,x1, ...,xn)

If function is a string containing the name of a function (usually defined by an M-file), then feval(function,x1,...,xn) evaluates that function at the given arguments.

Examples

The statements:

[V,D] = feval('eig',A)
[V,D] = eig(A)

are equivalent. feval is useful in functions that accept string arguments specifying function names. For example, the function:

function plotf(fun,x)
y = feval(fun,x);
plot(x,y)

can be used to graph other functions.