Creating an inline-function in dependence of a parameter

2 次查看（过去 30 天）
Benjamin
Benjamin 2011-5-31
Hello,
I want to use the newtzero-function which is not able to handle functions with parameters, so I thougth about writing a method which returns an inline function depending on a parameter, for example: fun_gen (5) should return inline('5*x^2').
Any guess?

请先登录，再回答此问题。

回答（3 个）

Jonas Reber
Jonas Reber 2011-5-31
maybe str2func is what you are looking for?
Oleg Komarov
Oleg Komarov 2011-5-31
c = 5;
f1 = inline([sprintf('%d',c) '*x^2'])
f2 = str2func(['@(x)' sprintf('%d',c) '*x^2'])
isequal(f1(2),f2(2)) % ok
Walter Roberson
Walter Roberson 2011-5-31
You can do it with anonymous functions instead of inline:
fun_gen = @(c) @(x) c*x^2;
Note that if you do this, then any one generated function will show c when it is displayed instead of the "captured" value of c, but it does work properly.

类别

在 Help Center 和 File Exchange 中查找有关 Function Handles 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by