MATLAB Answers

eval and inline function

10 views (last 30 days)
adem ski
adem ski on 27 Nov 2019
Edited: Stephen Cobeldick on 27 Nov 2019
clc
clear all
close all
a=0;
b=2;
y=5;
x=1/2;
f3=inline('1/(sqrt(x^2+y^2)');
[f6]=eval(f2)
??? Undefined function or method 'eval' for input arguments of type 'inline'.

  1 Comment

Stephen Cobeldick
Stephen Cobeldick on 27 Nov 2019
@adem ski: why on earth are you using outdated and almost obsolete inline?
The very start of the inline documentation states
Why are you ignoring the advice of the MATLAB documentation? Your task would be trivial with an anonymous function, do you have a good reason why you cannot use one?
Why on earth do you want to use awful, anti-pattern eval?

Sign in to comment.

Answers (1)

Fangjun Jiang
Fangjun Jiang on 27 Nov 2019
f3=inline('1/(sqrt(x^2+y^2))');
x=1/2;
y=5;
f3(x,y)

  3 Comments

adem ski
adem ski on 27 Nov 2019
i want use eval
Fangjun Jiang
Fangjun Jiang on 27 Nov 2019
str='1/(sqrt(x^2+y^2))';
eval(str)
Guillaume
Guillaume on 27 Nov 2019
"i want use eval"
Why? It's the one function that beginners should never use.

Sign in to comment.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by