Problem 1366. Finding peaks

Created by Selvaraaju Murugesan

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","relationshipId":"rId2","target":"/matlab/output.xml"}],"parts":[{"partUri":"/matlab/document.xml","relationship":[],"contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?><w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Find the peak values in the signal. The peak value is defined as the local maxima. For example, x= [1 12 3 2 7 0 3 1 19 7]; peaks = [12 7 3 19];</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/><w:jc w:val=\"left\"/></w:pPr><w:r><w:t>Hint: Plot x to visually analyse the signal and get the idea of finding the peak. Another hint : first derivative</w:t></w:r></w:p></w:body></w:document>"},{"partUri":"/matlab/output.xml","contentType":"text/xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><embeddedOutputs><metaData><evaluationState>manual</evaluationState><layoutState>code</layoutState><outputStatus>ready</outputStatus></metaData><outputArray type=\"array\"/><regionArray type=\"array\"/></embeddedOutputs>"}]}

Solve

Solution Stats

684 Solutions
275 Solvers

Last Solution submitted on Jan 24, 2022

Last 200 Solutions

Problem Comments

1 Comment

1 Comment

goc3 on 18 Nov 2016

The test suite has been expanded.

Solution Comments

Solution 1130535

2 Comments

2 Comments

Qin on 27 Feb 2017

y = findpeaks(x);
why this one doesn't work?

Dyuman Joshi on 26 Apr 2021

findpeaks() function is a part of Signal Processing Toolbox, which Cody doesn't support.

Problem Recent Solvers275

Problem Tags

basic matlab

Community Treasure Hunt

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

Start Hunting!

Problem 1366. Finding peaks

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers275

Suggested Problems

More from this Author9

Problem Tags

Community Treasure Hunt

Problem 1366. Finding peaks

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers275

Suggested Problems

More from this Author9

Problem Tags

Community Treasure Hunt

Players