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.
2012 年 7 月 16 日
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
2012 年 7 月 16 日
編集済み: Image Analyst
2012 年 7 月 16 日
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);
4 件のコメント
Image Analyst
2017 年 10 月 12 日
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
2012 年 7 月 16 日
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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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