How can I compute the mean of an EMG signal that I loaded it in MATLAB?

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Ghazal Hnr
Ghazal Hnr 2017-3-4
评论： Image Analyst 2017-3-4
I loaded my signal and now I want to compute the mean and absolut of it, is there any code to do these?

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Image Analyst
Image Analyst 2017-3-4
The mean() and abs() functions immediately spring to mind.
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Ghazal Hnr
Ghazal Hnr 2017-3-4
编辑：Ghazal Hnr 2017-3-4
I just want the mean of signal but I thought I can't use mean for a signal, it is a practice for one of my lessons. Thank you for your help
Image Analyst
Image Analyst 2017-3-4
Why did you think that? Did the practice question specifically say not to use the built-in mean() or sum() functions? If so, you can use a for loop:
theSum = 0;
for k = 1 : length(yourVector)
theSum = theSum + yourVector(k);
end
theMean = theSum / length(yourVector);
Or
theSum = theSum + abs(yourVector(k));
if you want the mean of the absolute value of the signal.

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ThB
ThB 2017-3-4
Just use
meanEMG = mean(EMG);
to compute a simple mean of an array. Or use
meanEMG = mean(mean(EMG));
if its a matrix
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Ghazal Hnr
Ghazal Hnr 2017-3-4
编辑：Ghazal Hnr 2017-3-4
it is a vertical vector, is it ok to use these codes for it? when I use mean the obtained answer is negative, isn't it a problem?

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