Function for Calculating Moving sum
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Is there any function to calculate moving sum of a vector? I use "smooth" for calculating the moving average of a vector
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F.
2012년 7월 16일
I'm sorry but I don't understand "moving sum of a vector" ... Could you explain it and give a little exemple ? thanks
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Image Analyst
2012년 7월 16일
편집: Image Analyst
2012년 7월 16일
For a "moving" sum - the sum in a window - you can use conv(), or conv2() in two dimensions:
windowWidth = 15; % or whatever.
movingSum = conv(oneDsignal, ones(1, windowWidth));
for the moving average:
windowWidth = 15; % or whatever.
movingAverage = conv(oneDsignal, ones(1, windowWidth) / windowWidth);
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Image Analyst
2017년 10월 12일
Why wouldn't it? If you replace each element with the average of elements around it, which is what conv() can do, then that's the moving average.
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Jonathan Sullivan
2012년 7월 16일
help filter
doc filter
Example: Take a 10 element moving average.
x = rand(1e3,1);
n = 10;
x_moving_average = filter(ones(1,n)/n,1,x);
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