How can i use If ... else loop inside function ?

Question

Yamina chbak 2020-7-21

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/568563-how-can-i-use-if-else-loop-inside-function

回答： Fangjun Jiang 2020-7-21

采纳的回答： Fangjun Jiang

在 MATLAB Online 中打开

Hi, i have a problem says :

Output argument ( and maybe others) not assigned during call to " g ". Here the function of g

%% Drichlet condition : u.n=g(x,y) in the boundary
function z= g(x,y,time)
if x==0
    nx=-1
    ny=0
    
    z=exp(-time).*sin(pi*x).*sin(pi*y);
end
if x==1
    nx=1
    ny=0
    
    z=exp(-time).*sin(pi*x).*sin(pi*y);
end
if  y==0
    nx=0
    ny=-1
    
    z=exp(-time).*sin(pi*x).*sin(pi*y);
end
if  y==1
    nx=0
    ny=1
    
    z=exp(-time).*sin(pi*x).*sin(pi*y);
end
end

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waqas 2020-7-21

What is the input that you are giving for g? Seems like you are giving both x and y at the same time and the conditions are not satisfied for if loop.

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