[Octave-bug-tracker] [bug #30767] Periodogram - extend functionality

[Alois Schlögl]

URL:
  <http://savannah.gnu.org/bugs/?30767>

                 Summary: Periodogram - extend functionality
                 Project: GNU Octave
            Submitted by: schloegl
            Submitted on: Fri 13 Aug 2010 10:43:02 AM GMT
                Category: None
                Severity: 3 - Normal
              Item Group: Feature Request
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: GNU/Linux

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Details:

The attached version extends the functionality of 
periodogram.m, adds support for additional input parameters, including, win,
nfft, Fs and range. This makes it compatible with the interface of ml. 

The following tests have been performed and show equivalent results
(difference is less than a few eps). 


x=mod(1:10,3)'-1;
periodogram(x)
Pxx=periodogram(x)
size(Pxx)

Pxx=periodogram(x,[],10)   
[Pxx,w]=periodogram(x,[],10)   
[Pxx,f]=periodogram(x,[],10,[])   
[Pxx,f]=periodogram(x,[],10,100)   
[Pxx,f]=periodogram(x,[],'twosided',10,100)   


 x=mod(1:1001,3)'-1;
 periodogram(x)
 Pxx=periodogram(x)
 size(Pxx)

 x=mod(1:1024,3)'-1;
 periodogram(x)
 Pxx=periodogram(x)
 size(Pxx)


A similar patch has been submitted here, 
  https://savannah.gnu.org/patch/?7236
Obviously, it has not been processed and would be obsolete by now.  


 Alois





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File Attachments:


-------------------------------------------------------
Date: Fri 13 Aug 2010 10:43:02 AM GMT  Name: periodogram.m  Size: 5kB   By:
schloegl

<http://savannah.gnu.org/bugs/download.php?file_id=21210>

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