the number of elements in the vector segment

2 次查看（过去 30 天）
Lev Mihailov
Lev Mihailov 2022-7-28
评论： Image Analyst 2022-7-28
I process the signal with the findpeaks function, it gives the position numbers of these peaks, and now I need to calculate how many peaks are in the time interval.
loc=[2 3 7 8 9 10 25 26 27]
intervaltime=6
%ans= [2 4 0 0 3] % my length vector is 100
%% zeros because there was nothing in the interval 12-18 and 18-24
Thanks in advance
  1 个评论
Image Analyst
Image Analyst 2022-7-28
Ran in:
Exactly which elements do you consider below to be "peaks"? And where is your call to findpeaks()?
loc=[2 3 7 8 9 10 25 26 27];
intervaltime=6;
%ans= [2 4 0 0 3] % my length vector is 100
%% zeros because there was nothing in the interval 12-18 and 18-24
plot(loc, 'b.-', 'MarkerSize', 30, 'LineWidth', 2);
grid on;
title('Peak Detection');
xlabel('Index')
ylabel('loc Signal Value')

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Mathias Smeets
Mathias Smeets 2022-7-28
Ran in:
Probably not the best way to go but I got this:
location = [ 2 3 7 8 9 10 25 26 27];
intervaltime = 6;
for i = 1:5
result(i) = length(location(location < i*6));
result(i) = result(i) - length(location(location < (i-1)*6))
end
result = 2
result = 1×2
2 4
result = 1×3
2 4 0
result = 1×4
2 4 0 0
result = 1×5
2 4 0 0 3

类别

在 Help Center 和 File Exchange 中查找有关 Descriptive Statistics 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