Getting an error saying "Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters"

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Abhinit
Abhinit 2025-7-11
评论： Image Analyst 2025-7-11
Ran in:
Here is my code that I have and I have checked to make sure there are correct number of parenthesis on both sides, but continues to give this error. Any help would be appreciated.
Code:
%%Root Mean Square envelope (moving average)- mean power of signal
envelope=zeros(L,4); %L= length(data)
%Window size in ms
window=50; %larger more of original signal but distortion and spikey, lower number could be flat
for i=1:4
envelope(:,i) = sqrt(movmean(((rec_signal(:,i).^2),window)));%Average according to moving window size; %sim to RMS
Unexpected ',' in parentheses. When creating a matrix, use square brackets [].
end

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采纳的回答

Image Analyst
Image Analyst 2025-7-11
编辑：Image Analyst 2025-7-11
You have too many parentheses. This works:
L = 21;
rec_signal = rand(L, 4);
%% Root Mean Square envelope (moving average) - mean power of signal
envelope = zeros(L,4); % L = length(data)
% Window size in ms
window = 50; % Larger more of original signal but distortion and spikey, lower number could be flat
for i = 1 : 4
envelope(:,i) = sqrt(movmean((rec_signal(:,i).^2),window)); % Average according to moving window size; %sim to RMS
end
  2 个评论
Image Analyst
Image Analyst 2025-7-11
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