清空筛选条件
清空筛选条件

Function for Calculating Moving sum

3 次查看（过去 30 天）
John
John 2012-7-16
评论： Image Analyst 2017-10-12
Is there any function to calculate moving sum of a vector? I use "smooth" for calculating the moving average of a vector
  1 个评论
F.
F. 2012-7-16
I'm sorry but I don't understand "moving sum of a vector" ... Could you explain it and give a little exemple ? thanks

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Image Analyst
Image Analyst 2012-7-16
编辑：Image Analyst 2012-7-16
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 个评论
显示 2更早的评论
Image Analyst
Image Analyst 2017-10-12
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.

请先登录，再进行评论。

更多回答（1 个）

Jonathan Sullivan
Jonathan Sullivan 2012-7-16
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);

类别

在 Help Center 和 File Exchange 中查找有关 Logical 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by