Storing information from a loop over 3 variables

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RP
RP 2022 年 4 月 4 日
編集済み: Geoff Hayes 2022 年 4 月 4 日
The code below seems to store the results from each loop as opposed to providing the results from the current loop.
So, for example Table(1,1,2) has the results of Table (1,1,1) and Table (1,1,2).
x=xlsread('DeltaNAV.xlsx','Sheet1','O4:O200003');
SCR=prctile(x,0.5);
rho=0;
muinputs=[-0.025,-0.010,0.0181,0.025];
sigmainputs=[0.0125,0.0287,0.0501,0.0751];
Table=cell(4,4,9);
for i=1:4
for j=1:4
for ii=1:9
muy=-muinputs(i)*SCR;
sigmay=-sigmainputs(j)*SCR;
%muy=-0.1*SCR;
%sigmay=-0.1*SCR;
y(:,ii)=Testlooping(x,rho,muy,sigmay);
y2(:,ii)=x+y(:,ii);
y3(:,ii)=prctile(y2(:,ii),0.5);
Table{i,j,ii}=y3;
end
end
end

採用された回答

Geoff Hayes
Geoff Hayes 2022 年 4 月 4 日
@RP - look closely at this code
for i=1:4
for j=1:4
for ii=1:9
muy=-muinputs(i)*SCR;
sigmay=-sigmainputs(j)*SCR;
y(:,ii)=Testlooping(x,rho,muy,sigmay);
y2(:,ii)=x+y(:,ii);
y3(:,ii)=prctile(y2(:,ii),0.5);
Table{i,j,ii}=y3;
end
end
end
when ii is 1, then the code is doing
y(:,1)=Testlooping(x,rho,muy,sigmay);
y2(:,1)=x+y(:,1);
y3(:,1)=prctile(y2(:,1),0.5);
Table{i,j,1}=y3;
On the subsequent iteration, when ii is 2, then
y(:,2)=Testlooping(x,rho,muy,sigmay);
y2(:,2)=x+y(:,2);
y3(:,2)=prctile(y2(:,2),0.5);
Table{i,j,2}=y3;
Note that the assignment to Table{i,j,2} is y3 which combines the results of the current iteration and that of the previous. I don't think that you need to maintain this data on each iteration and so the code could be simplified to
y = Testlooping(x,rho,muy,sigmay);
y2 = x + y;
y3 = prctile(y2,0.5);
Table{i,j,2} = y3;
Would the above work instead?

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