The code initially ran fine, but when i run it for the second time without doing any changes it is showing an error

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Aynkaran 2022-10-5

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https://ww2.mathworks.cn/matlabcentral/answers/1817745-the-code-initially-ran-fine-but-when-i-run-it-for-the-second-time-without-doing-any-changes-it-is-s

回答： Hari 2022-10-5

t=[0 5 10 15 30 60];
COD1=[2395.8, 2142.2, 2103.2, 2096.2, 2123, 2094];
COD2=[2395.8, 2010, 1686.7, 1651, 1593.3, 1150];
COD3=[2395.8, 1131.7, 966.7, 820, 621.7, 436.7];
x1=[1,1,1,1,1,1];
COD11=COD1.*COD1;
COD22=COD2.*COD2;
COD33=COD3.*COD3;
y1=0.5*(x1./COD11);
y2=0.5*(x1./COD22);
y3=0.5*(x1./COD33);
hold on
plot(ccfit1,t,y1); 
%plot(ccfit2,t,y2)
%plot(ccfit3,t,y3)
hold off

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Aynkaran 2022-10-5

I actually want to plot many fitted lines in one plot

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Answer 1

Hari 2022-10-5

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https://ww2.mathworks.cn/matlabcentral/answers/1817745-the-code-initially-ran-fine-but-when-i-run-it-for-the-second-time-without-doing-any-changes-it-is-s#answer_1066960

It is not possible to give an unambiguous answer to this question, as the ccfit1 variable has not been defined within the shared piece of code. From the error message it looks like size of the inputs to the plot function is incompatible. I would recommend to debug the probem by looking at the data, using a breakpoint on the line leading to error.