how to compute a for cycle in copulapdf varying nu parameter from 1 to 8

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EM geo 2018-8-28

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https://ww2.mathworks.cn/matlabcentral/answers/416513-how-to-compute-a-for-cycle-in-copulapdf-varying-nu-parameter-from-1-to-8

评论： EM geo 2018-8-29

I have to use copulapdf command and create different figures from it, varying the parameter nu from 1 to 8. The code for the copula pdf for the nu value=1 is:

nu=1;
r=0.5;
u = linspace(0,1,20);
[u1,u2] = meshgrid(u,u);
rho1 = copulaparam('t',r,nu);
y = copulapdf('t',[u1(:),u2(:)],rho1,nu);
surf(u1,u2,reshape(y,20,20))
xlabel('u1')ylabel('u2')

This script works but i want to find a way to have figures automatically for different values of nu. Can someone help me to write the for cycle for this purpose?

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采纳的回答

Jeff Miller 2018-8-29

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https://ww2.mathworks.cn/matlabcentral/answers/416513-how-to-compute-a-for-cycle-in-copulapdf-varying-nu-parameter-from-1-to-8#answer_334479

在 MATLAB Online 中打开

Not sure if this is what you want, but it looks easy enough. Change the first line to

for nu=1:8

add

end

as the last line. And insert

figure;

before the surf command.

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Jeff Miller 2018-8-29

在 MATLAB Online 中打开

Should be:

   xlabel('u1');
   ylabel('u2');

EM geo 2018-8-29

在 MATLAB Online 中打开

Very good, it works! really really thank you! The final script corrected is:

for nu=1:8    
    r=0.5;
    u = linspace(0,1,20);
    [u1,u2] = meshgrid(u,u);
    y = copulapdf('t',[u1(:),u2(:)],r,nu);
    figure;
    surf(u1,u2,reshape(y,20,20))
    xlabel('u1');
    ylabel('u2');
end