Utilizing "maxk" function in series of vectors

1 次查看（过去 30 天）
Daeyeon Koh
Daeyeon Koh 2021-9-2
编辑： Matt J 2021-9-2
Hi. I used "findpeaks" function, and get peak datas in vector(pks, locs): "locs" means the X value.
And I wanna get 4 peak datas in vector in order to "locs" value like the loaded picture in red grid (in the range of 1<locs<10).
But according to the present code, I can only get seperate "maxk" values for each pks and locs.
How can I get desirable vector array like the picture?
for n=1:col-2
y=numbers(:,col);
ys=smooth(y,50,'sgolay',5);
[pks,locs] = findpeaks(ys,x,'MinPeakDistance',0.5);
A{n}=[pks,locs];
B{n}=maxk(A{n,1}(locs>1&locs<10,:),4);
end

请先登录，再回答此问题。

采纳的回答

Matt J
Matt J 2021-9-2
编辑：Matt J 2021-9-2
for n=1:col-2
y=numbers(:,col);
ys=smooth(y,50,'sgolay',5);
[pks,locs] = findpeaks(ys,x,'MinPeakDistance',0.5);
[~,idx]=maxk( pks(locs>1&locs<10) ,4);
A{n}=[pks,locs];
B{n}=A{n}(idx,:);
end
  2 个评论
Daeyeon Koh
Daeyeon Koh 2021-9-2
Hi Matt, and thank you for your help.
I understand usability of indexing.
By the way, although I set the locational range (locs>1&locs<10), it looks like "locs>1" doesn't work.
(the picture below is a result when sorting idx: sort(idx))
How to solve this problem?
Matt J
Matt J 2021-9-2
编辑：Matt J 2021-9-2
To troubleshoot, we need to see pks and locs. I suggest attaching them in a .mat file.

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Creating and Concatenating Matrices 的更多信息

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by