How can I fix "Index in position 2 exceeds array bounds" in for loop ?
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Rajeev Kumar
am 7 Nov. 2022
Bearbeitet: Joan
am 8 Nov. 2022
Code:
A= datafile
sumArray = [];
for c = 1:length(A)
col = A(:,c);
sum1 = rms(A(:,c));
sumArray = [sumArray,sum1];
end
s=sumArray'
Attached file = A
Error : Index in position 2 exceeds array bounds (must not exceed 11).
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CHIRANJIT DAS
am 7 Nov. 2022
@Rajeev Kumar You are giving dimension of row in the for loop. Perhaps you can replace length(A) with size(A,2). Revised code looks like the below one..
sumArray = [];
for c = 1:size(A,2)
col = A(:,c);
sum1 = rms(A(:,c));
sumArray = [sumArray,sum1];
end
s=sumArray'
Cheers
Weitere Antworten (2)
Askic V
am 7 Nov. 2022
Bearbeitet: Askic V
am 7 Nov. 2022
This is because you're not using length correctly. In fact it is not a good idea to use length when working with matrices.
In your special case, please have a look at the code:
load A.mat
% A is a matrix with dimensions: 1024x11
[nrRows, nrCols] = size(A)
ll = length(A)
I hope you understand now. You have only 11 columns in a matrix, but you're trying to iterate loop from 1 to 1024, where in fact 1024 is the number of rows.
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