Problem in running my code

Question

Maheen Fazal 2019-2-14

0
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https://ww2.mathworks.cn/matlabcentral/answers/444906-problem-in-running-my-code

关闭： MATLAB Answer Bot 2021-8-20

Hi Sir, kindly tell me where i am doing wrong??

TN=4;
n_vec=1:TN;
n=n_vec;
max=[0.32 0.51 0.112 1.3]; 
B=0.3;
Psi=0.6;
No=0.01;
tau=B./n;
for Max=max;
h=rand(1,TN);
 Rhn=(tau*Psi*log(2))*(1+((max*h)/(tau*No)))
end

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Answer 1

KSSV 2019-2-14

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https://ww2.mathworks.cn/matlabcentral/answers/444906-problem-in-running-my-code#answer_360969

编辑：KSSV 2019-2-14

在 MATLAB Online 中打开

TN=4;
n_vec=1:TN;
n=n_vec;
themax=[0.32 0.51 0.112 1.3];
B=0.3;
Psi=0.6;
No=0.01;
tau=B./n;
for Max=themax;
    h=rand(1,TN);
    Rhn=(tau*Psi*log(2)).*(1+((themax.*h)./(tau*No)))
end

Read about element by element array operations. When you multiply arrays element by element use .*.

Also note that, don't name the variables on the name of inbuilt functions......I have renames variable max with themax. There is inbuilt function to find maximum called max.

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Answer 2

madhan ravi 2019-2-14

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https://ww2.mathworks.cn/matlabcentral/answers/444906-problem-in-running-my-code#answer_360970

编辑：madhan ravi 2019-2-14

在 MATLAB Online 中打开

Don't name variable max because there is an inbuilt function named max(), preallocate Rhn for speed and efficiency:

TN=4;
n_vec=1:TN;
n=n_vec;
Max=[0.32 0.51 0.112 1.3]; 
B=0.3;
Psi=0.6;
No=0.01;
tau=B./n;
Rhn=zeros(TN);
for k=1:TN
 h=rand(1,TN);
 Rhn(k,:)=(tau*Psi*log(2))*(1+((Max(k)*h)/(tau*No)));
end
Rhn