psd question

I'm trying to use the matplotlib psd function to plot some data. The
result from MATLAB's pWelch function looks vastly different.

What is the default window type for Matlab? For Matplotlib it is the
Hanning window. If Matlab defaults to a rectangular window the
results will look quite different.

Otherwise, what version of matplotlib are you using? The most recent
release has a fix to properly scale the PSD output. For such a high
sampling frequency the fix will make a huge difference.

- Matt

This e-mail and any files transmitted with it may be proprietary and are intended solely for the use of the individual or entity to whom they are addressed. If you have received this e-mail in error please notify the sender.
Please note that any views or opinions presented in this e-mail are solely those of the author and do not necessarily represent those of ITT Corporation. The recipient should check this e-mail and any attachments for the presence of viruses. ITT accepts no liability for any damage caused by any virus transmitted by this e-mail.

Good point Matt...I'm using the latest (and I do see the scaling warning
message)
I'll check on the default window type for Matlab
THANXS
amb

Ambrose Lewis
SAIC
4001 N Fairfax Drive, Suite 400
Arlington, VA 22203
703.558.2786
ambrose.j.lewis@...2441...

ยทยทยท

-----Original Message-----
From: matplotlib-users-bounces@lists.sourceforge.net
[mailto:matplotlib-users-bounces@lists.sourceforge.net] On Behalf Of
Fago, Matt - AES
Sent: Wednesday, January 14, 2009 11:36 AM
To: matplotlib-users@lists.sourceforge.net
Subject: Re: [Matplotlib-users] psd question

I'm trying to use the matplotlib psd function to plot some data. The
result from MATLAB's pWelch function looks vastly different.

What is the default window type for Matlab? For Matplotlib it is the
Hanning window. If Matlab defaults to a rectangular window the
results will look quite different.

Otherwise, what version of matplotlib are you using? The most recent
release has a fix to properly scale the PSD output. For such a high
sampling frequency the fix will make a huge difference.

- Matt

This e-mail and any files transmitted with it may be proprietary and are
intended solely for the use of the individual or entity to whom they are
addressed. If you have received this e-mail in error please notify the
sender.
Please note that any views or opinions presented in this e-mail are
solely those of the author and do not necessarily represent those of ITT
Corporation. The recipient should check this e-mail and any attachments
for the presence of viruses. ITT accepts no liability for any damage
caused by any virus transmitted by this e-mail.

------------------------------------------------------------------------
------
This SF.net email is sponsored by:
SourcForge Community
SourceForge wants to tell your story.
http://p.sf.net/sfu/sf-spreadtheword
_______________________________________________
Matplotlib-users mailing list
Matplotlib-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/matplotlib-users