Symbolic or function handle to numeric

3 次查看（过去 30 天）
Drew Mitchell
Drew Mitchell 2016-4-20
回答： Walter Roberson 2016-4-21
Is there a way to turn a symbolic expression or function handle into a numeric expression? For example, say i have:
syms x
y=x^2;
and would like to turn it into to this
y=x^2;
Where x is no longer a symbolic variable such that when I give x a value like
x=[1 2 3];
and I type
y
I get
y=[1 4 9];
I know function handles will do this but matlab coder can not take function handles, so is there a way to do this?
Thanks
Drew

请先登录，再回答此问题。

回答（2 个）

Azzi Abdelmalek
Azzi Abdelmalek 2016-4-20
编辑：Azzi Abdelmalek 2016-4-20
syms x;
y=x^2;
out=subs(y,[1 2 3])
  3 个评论
显示 1更早的评论
Azzi Abdelmalek
Azzi Abdelmalek 2016-4-20
编辑：Azzi Abdelmalek 2016-4-20
have you tried inline function?
y=inline('x.^2')
Drew Mitchell
Drew Mitchell 2016-4-20
That is also not supported by coder.
I appreciate the responses though Thanks!!

请先登录，再进行评论。

Walter Roberson
Walter Roberson 2016-4-21
syms is not supported by the coder either. So anything having to do with symbolics has to be done and over with before code is generated. At the time you are running the symbolic code, you can use matlabFunction to write to a file.

类别

在 Help Center 和 File Exchange 中查找有关 Assumptions 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