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[Octave-bug-tracker] [bug #44112] signal package: specgram(rand(384, 1))


From: Mike Miller
Subject: [Octave-bug-tracker] [bug #44112] signal package: specgram(rand(384, 1)) and smaller give errors
Date: Thu, 29 Jan 2015 04:18:18 +0000
User-agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.91 Safari/537.36

Update of bug #44112 (project octave):

              Item Group:                   Crash => Incorrect Result       
                  Status:                    None => Fixed                  
             Assigned to:                    None => mtmiller               
        Operating System:               GNU/Linux => Any                    
                 Summary: signal -> specgram(rand(384,1)) and smaller give
errors => signal package: specgram(rand(384,1)) and smaller give errors

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Follow-up Comment #1:

Thanks for your bug report. The length of the input sequence has to be greater
than the window length, which defaults to 256. If you specify a smaller
segment size or window size, you won't get this error.

I have added an error check for the first error you described, when the input
is smaller than the window size:

http://sourceforge.net/p/octave/signal/ci/c18926ec0e6e

The second error you are seeing is due to an error plotting images with
Gnuplot, I've reported this as bug #44114. There's not much else that can be
fixed in the specgram function for this error, so closing this bug as fixed.

    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?44112>

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