Why getting this error ? how to fix it ?

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Bob 2019-3-15

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https://ww2.mathworks.cn/matlabcentral/answers/450271-why-getting-this-error-how-to-fix-it

评论： Jan 2019-3-19

采纳的回答： Alex Mcaulley

在 MATLAB Online 中打开

Hi all,

I am trying to achive coeffcient correlation but getting erorr "Unable to perform assignment because the indices on the left side are not compatible with the

size of the right side".

Following function being used:

for i=1: length(a_sw)-300     
x(i)= corrcoef(a_sw (i:i+300), b_sw(i:i+300));
Time_x=i;
end
figure(1)
plot(a_sw,b_sw,'ko',a_sw,b_lin,'r');
xlabel('A')
ylabel('B')

Any help would be appreciated.

Thanks

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Alex Mcaulley 2019-3-15

Yes, unless a_sw and b_sw were scalars

Jan 2019-3-19

@Bob: If you really appreciate the help of the forum, do not delete your question after solutions have been posted.

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采纳的回答

Alex Mcaulley 2019-3-15

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编辑：Alex Mcaulley 2019-3-15

在 MATLAB Online 中打开

As Adam said, probably your a_sw and b_sw are arrays and then the output of this

corrcoef(a_sw (i:i+300), b_sw(i:i+300));

is a matrix.

Then, to store those matrix you can use, for example, a cell array:

for i=1: length(a_sw)-300     
    x{i}= corrcoef(a_sw (i:i+300), b_sw(i:i+300));
    Time_x=i;
end
figure(1)
plot(a_sw,b_sw,'ko',a_sw,b_lin,'r');
xlabel('A')
ylabel('B')