specgram graphical output is upside down

Status: Alpha

Brought to you by: shaiay

specgram graphical output is upside down

Forum: Help

Creator: Nobody/Anonymous

Created: 2007-07-16

Updated: 2013-04-25

Nobody/Anonymous - 2007-07-16

Hi,
I just wanted to let everyone know that octplot's specgram() version is showing the graphical output upside down. Look at the specgram_demo image shown at http://octplot.sourceforge.net/demo.html, and you'll notice that the chirp spectrogram is wrong, as for the chirp signal being analyzed has increasing frequency with time, while the plot shows decreasing frequency with time. An extra flipud() within the pcolor() call is the culprit.
All the best,
Oscar

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- Shai Ayal - 2007-07-17
  
  Oscar,
  
  Can you please file an appropriate bug report and if you can attach a patch, even better ...
  
  If you find a bug, filling a bug report is the best way to ascertain that your find will be noticed and probably fixed before the next release. It also gives you (and me) a way to monitor the progress of the fix, and a way for you to make sure the fix is OK.
  
  Thanks,
  Shai
  
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