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matlab says the inline function will be removed in future release how should i execute a string function like '2*x.^2+5'

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omid
omid 2017-6-20
评论： Alfonso Rodriguez 2021-6-29
function
  1 个评论
Stephen23
Stephen23 2017-6-20
When you read the inline documentation the very first line of text says:
inline will be removed in a future release. Use Anonymous Functions instead.
How about using anonymous functions, just like the documentation recommends?

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采纳的回答

Star Strider
Star Strider 2017-6-20
Use Anonymous Functions (link).
Your function becomes:
fcn = @(x) 2*x.^2+5;
the call it as you would any other function:
y = fcn(x);
To convert a string to a function, use the str2func (link) function:
str = '2*x.^2+5';
fun = str2func(['@(x) ',str]);
y = fun(x);
This creates the anonymous function from the string, and returns a function handle.
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Andrei Bobrov
Andrei Bobrov 2017-6-21
syms y
f = matlabFunction(2*y^2+3);

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