清空筛选条件
清空筛选条件

Need help With "If" statement

1 次查看（过去 30 天）
Andrew
Andrew 2011-2-18
Hi everyone,
I have an if statement that looks like the following:
if ( n == 0 && m == 0 )
values = 1;
elseif ( n < 0 || m < 0 )
display('no')
elseif ( n == 1 && m == 1 )
w11 = sqrt(3);
values = w11*sqrt((1-cos(theta).^2))*pnmnew(m-1,m-1,theta,norm);
elseif (n == m )
wmm = sqrt((2*m+1)/(2*m));
values = wmm.*(1-cos(theta).^2).^(1/2).*pnmnew(m-1,m-1,theta,norm);
wnm = sqrt(abs(((2*n+1)*(2*n-1))/((n+m)*(n-m))));
wnmB = sqrt(abs(((2*(n-1)+1)*(2*(n-1)-1))/(((n-1)+m)*((n-1)-m))));
values = wnm*(cos(
elseif ( n ~= m )theta).*pnmnew(n-1,m,theta,norm)-(wnmB)^(-1)*pnmnew(n-2,m,theta,norm));
I was wondering how I could go from displaying "no" in the elseif statement to terminating it. I don't want it to recursion through values < 0. How would I make it so it ends when it hits that condition?
Thanks!

请先登录，再回答此问题。

采纳的回答

Oleg Komarov
Oleg Komarov 2011-2-18
See return, place it after:
display('no')
Oleg

更多回答（2 个）

Matt Fig
Matt Fig 2011-2-18
I don't know what you mean by "I don't want it to recursion through values <0."
An IF statement is not a recursive thing. If you mean you want the function evaluation to stop where the DISP statement is, put a call to RETURN there.
  2 个评论
Andrew
Andrew 2011-2-18
Yes, I would like it to stop. I am using the entire function with if statements to do a recursive call so sometimes it gives me errors. For some reason when I add the return it still gives me an infinite recursion but I will try it again.
Thanks~
Matt Fig
Matt Fig 2011-2-18
In that case I would try to post the whole code, if it is not too long, and ask for help.

请先登录，再进行评论。

Matt Tearle
Matt Tearle 2011-2-18
Do you want that to be an error condition? In which case error('no') (in place of disp) will display the message and terminate execution.

类别

在 Help Center 和 File Exchange 中查找有关 Structures 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