mean of matrix elements
조회 수: 3 (최근 30일)
이전 댓글 표시
hey all. i have a 5760x1 matrix. i need to find the average of the first 10 elements, remove the 10 elements and replave with the averaged number, find the average of the next 10 elements, remove those 10 elements and replace with average and so on.... could anyone give me an insight as to how to do this? much appreciated john
댓글 수: 0
채택된 답변
Sean de Wolski
2014년 10월 15일
B = mean(reshape(x,10,[]))'
Where x is your original column vector and B is the mean of every 10x1 chunk
댓글 수: 0
추가 답변 (3개)
Andrew Reibold
2014년 10월 15일
편집: Andrew Reibold
2014년 10월 15일
myMatrix = rand(5760,1)
for jj = 1:576
moving_avg(jj,1) = mean(myMatrix(jj*10-9:jj*10));
end
Will make a matrix called 'moving_avg' where each point represents the average of each set of 10 points.
Is that what you wanted? It will be 1/10 the size.
댓글 수: 1
Andrew Reibold
2014년 10월 15일
Its very easy to replace every single point with the average too if thats what you need. (Same size, but every set of 10 numbers are all the same averaged number.)
Andrei Bobrov
2014년 10월 16일
I want have 'vote' too!
out = accumarray(ceil((1:numel(x))'/10),x(:),[],@mean);
댓글 수: 2
Sean de Wolski
2014년 10월 16일
b=blkproc(rand(5760,1),[10,1],@mean)
I can't think of a solution shorter than my reshape one in terms of Code Golf?
참고 항목
카테고리
Help Center 및 File Exchange에서 Get Started with MATLAB에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!