bugGNU Octave - Bugs: bug #45056, pkg signal: peak detection not...

 
 

bug #45056: pkg signal: peak detection not working for very simple and smooth data

Submitted by:  None
Submitted on:  Fri 08 May 2015 03:37:57 PM UTC  
 
Category: Octave Forge PackageSeverity: 3 - Normal
Priority: 5 - NormalItem Group: Incorrect Result
Status: FixedAssigned to: None
Originator Name: fulvio ciriacoOriginator Email: -unavailable-
Open/Closed: ClosedRelease: 3.8.2
Operating System: GNU/Linux

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Fri 08 May 2015 05:11:33 PM UTC, comment #2:

Assuming you called:

Indeed it fails to discover the peaks. This is due to the fact that your signal is highly oversampled. you can subsample it ot improve results, but I couldn't get somethign really good. therefore I improved findpeaks to consider the case of oversampled data.

You can wait for the next release of singal, but since it is really a quick fix, you can edit your findpeaks.m:
Change line 157 to read

@devs: please close this bug.

Juan Pablo Carbajal <juanpi>
Project Member
Fri 08 May 2015 04:28:30 PM UTC, comment #1:

Please provide the version of the signal package you are using and the command you used to find the peaks.

Juan Pablo Carbajal <juanpi>
Project Member
Fri 08 May 2015 03:37:57 PM UTC, original submission:

I was not able to obtain the peaks of the attached data, even if they are rather smooth. Instead, I obtain very strange positions.

Anonymous

 

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Attached Files
file #33967:  mydata.gz added by None (27KiB - application/gzip)

 

Depends on the following items: None found

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Carbon-Copy List
  • -unavailable- added by mtmiller (Updated the item)
  • -unavailable- added by juanpi (Posted a comment)
  • -unavailable- added by None (Submitted the item)
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    Follow 3 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Fri 08 May 2015 11:48:48 PM UTCmtmillerStatusNone=>Fixed
      Open/ClosedOpen=>Closed
    Fri 08 May 2015 03:37:57 PM UTCNoneAttached File-=>Added mydata.gz, #33967

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