matplotlib-devel Mailing List for matplotlib

This sounds great. Unfortunately, I can't attend Scipy this year due to 
a family commitment, but would be more than happy to help put together 
and review materials beforehand.
Cheers,
Mike
On 03/26/2015 10:59 AM, Thomas Caswell wrote:
>
> I also think we should have a 'state of the library' talk.
>
> We definitely have a few important things to announce/show off:
> - FSA
> - nbagg/notebook
> - new default colors
> - style module
>
> and should have a couple more by July
> - sane serialize/deserialize + interop with plotly/bokeh
> - better toolbar
> - better interactive OO
> - improved docs
>
> I will be there for the main conference and the sprints and am willing 
> to give this talk, but will defer if someone else wants to do it.
>
> Does anyone want to volunteer to be Ben's second on his tutorial?
>
>
>
> On Fri, Mar 13, 2015 at 2:46 PM Olga Botvinnik <obo...@uc... 
> <mailto:obo...@uc...>> wrote:
>
> I'd be very interested in hearing a "state of matplotlib" talk.
>
>
> On Fri, Mar 13, 2015, 11:29 Phil Elson <pel...@gm...
> <mailto:pel...@gm...>> wrote:
>
> Orchestrating MPL tutorials and talks in this thread would be
> a good idea. I'd be happy to help anybody planning on
> submitting anything relating specifically to matplotlib, and
> wonder if we should do a "state of matplotlib" type talk
> similar to the one Mike did 2 years ago.
>
> On 13 March 2015 at 02:05, Benjamin Root <ben...@ou...
> <mailto:ben...@ou...>> wrote:
>
> Yes, I plan to submit my time-honored, and requested
> "Anatomy of Matplotlib" tutorial. Now, I am not entirely
> sure I will be able to attend the conference this year, so
> perhaps someone else might be willing to step in and give
> it this year?
>
> Note that my tutorial is geared for beginners. So there is
> still plenty of opportunity for someone else to submit a
> tutorial for more advanced users!
>
> Cheers!
> Ben Root
>
> On Thu, Mar 12, 2015 at 6:46 PM, Nelle Varoquaux
> <nel...@gm...
> <mailto:nel...@gm...>> wrote:
>
> Hi everyone,
>
> Is someone submitting a tutorial on matplotlib? The
> call for tutorial is open, and I think it would be
> nice to have one on matplotlib.
>
> Cheers,
> N
>
> ---------- Forwarded message ----------
> From: *SciPy 2015 Organizers*
> <sci...@sc...
> <mailto:sci...@sc...>>
> Date: 11 March 2015 at 01:02
> Subject: SciPy 2015 CFP Email 2
> To: nel...@gm...
> <mailto:nel...@gm...>
>
>
> SciPy 2015 Logo
> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://scipy2015.scipy.org/ehome/index.php%7CQ%7Ceventid%7CE%7C115969%7CA%7C>
>
>
> Tick-Tock, Tick-Tock:
> T-Minus 6 Days for Tutorial Submissions
>
> *Due Date: March 16, 2015*
>
> The SciPy experience kicks off with two days of
> tutorials
> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://scipy2015.scipy.org/ehome/115969/259288/%7CQ%7C>
> (July 6-7). These sessions provide extremely
> affordable access to expert training, and consistently
> receive fantastic feedback from participants. We're
> looking for submissions on topics from introductory to
> advanced - we'll have attendees across the gamut
> looking to learn. Plus, you can earn an instructor
> stipend to apply towards your conference
> participation. Visit the SciPy 2015 website for
> details
> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://scipy2015.scipy.org>
> or submit a proposal here
> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://www.scipy2015.scipy.org/eselectv2/frontend/index/115969>.
>
>
> Submit a Tutorial Proposal Here
> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://www.scipy2015.scipy.org/eselectv2/frontend/index/115969>
>
>
>
> Talk and Poster Proposals Due April 1st
>
> There's always something new and exciting going on in
> the world of Science + Python, this is your chance to
> get up and talk about it!
>
> *Visit the SciPy 2015 website
> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://scipy2015.scipy.org/ehome/index.php%7CQ%7Ceventid%7CE%7C115969%7CA%7C>
> for full details or click here to submit a proposal
> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://www.scipy2015.scipy.org/eselectv2/frontend/index/115969>.*
> Choose a topic in one of the 3 main conference tracks:
>
> * Scientific Computing in Python (General track)
> * Python in Data Science
> * Quantitative and Computational Social Sciences
>
> *And/or submit for one of the 7 domain-specific
> mini-symposia
> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://www.scipy2015.scipy.org/eselectv2/frontend/index/115969>:*
>
> * Astronomy and astrophysics
> * Computational life and medical sciences
> * Engineering
> * Geographic information systems (GIS)
> * Geophysics
> * Oceanography and meteorology
> * Visualization, vision and imaging
>
>
> Submit a Talk or Poster Proposal Here
> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://www.scipy2015.scipy.org/eselectv2/frontend/index/115969>
>
>
>
> Need some inspiration?
>
> Follow @SciPy on Twitter
> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=https://twitter.com/scipyconf>
> for highlights from previous SciPy conferences and all
> of the latest 2015 updates.
>
> * Previous year's conferences with talk information
> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://conference.scipy.org/past.html>
>
> * SciPy 2014 Talk & Tutorial Video playlist
> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://www.youtube.com/playlist%7CQ%7Clist%7CE%7CPLYx7XA2nY5GfuhCvStxgbynFNrxr3VFog>
> * SciPy 2013 Talk & Tutorial Video playlist
> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://www.youtube.com/playlist%7CQ%7Clist%7CE%7CPLYx7XA2nY5GeTWcUQTbXVdllyp-Ie3r-y>
>
>
> Financial Scholarship Applications Now Being Accepted
>
> With the support of our sponsors, the SciPy conference
> provides financial assistance to attendees based on
> both community contribution and financial need.
>
> In 2014 we were able to support 19 applicants,
> including 5 diversity aid recipients, selected for
> their outstanding contributions to open source
> scientific Python projects. *If you'd like to be
> considered for financial scholarship, please apply
> here
> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://scipy2015.scipy.org/ehome/115969/259279/?&>
> before April 15, 2015.*
>
>
> Sponsor Thank Yous!
>
> We gratefully recognize our SciPy conference sponsors,
> whose contributions ensure the accessibility of the
> conference and growth of the important work being done
> by the scientific Python community.
> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=www.kitware.com>
>
> *This week's sponsor highlight is silver sponsor,
> Kitware:*
> /Kitware, Inc. is a leader in the creation and support
> of open-source software and state of the art
> technology. By fostering extended, collaborative
> communities, Kitware is able to provide flexible,
> cost-effective visualization, computer vision, medical
> imaging, data publishing, and quality software process
> solutions to a variety of academic and government
> institutions and private corporations worldwide./
>
> ------------------------------------------------------------------------
> Know a company that might want to sponsor SciPy 2015
> or provide scholarship funding? Share thesponsorship
> prospectus
> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://scipy2015.scipy.org/ehome/115969/259285/?&>
>
>
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>
>
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>
> ------------------------------------------------------------------------------
> Dive into the World of Parallel Programming The Go Parallel
> Website, sponsored
> by Intel and developed in partnership with Slashdot Media, is
> your hub for all
> things parallel software development, from weekly thought
> leadership blogs to
> news, videos, case studies, tutorials and more. Take a look
> and join the
> conversation now.
> http://goparallel.sourceforge.net/_______________________________________________
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> ------------------------------------------------------------------------------
> Dive into the World of Parallel Programming The Go Parallel
> Website, sponsored
> by Intel and developed in partnership with Slashdot Media, is your
> hub for all
> things parallel software development, from weekly thought
> leadership blogs to
> news, videos, case studies, tutorials and more. Take a look and
> join the
> conversation now.
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> ------------------------------------------------------------------------------
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> by Intel and developed in partnership with Slashdot Media, is your hub for all
> things parallel software development, from weekly thought leadership blogs to
> news, videos, case studies, tutorials and more. Take a look and join the
> conversation now. http://goparallel.sourceforge.net/
>
>
> _______________________________________________
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I also think we should have a 'state of the library' talk.
We definitely have a few important things to announce/show off:
 - FSA
 - nbagg/notebook
 - new default colors
 - style module
and should have a couple more by July
 - sane serialize/deserialize + interop with plotly/bokeh
 - better toolbar
 - better interactive OO
 - improved docs
I will be there for the main conference and the sprints and am willing to
give this talk, but will defer if someone else wants to do it.
Does anyone want to volunteer to be Ben's second on his tutorial?
On Fri, Mar 13, 2015 at 2:46 PM Olga Botvinnik <obo...@uc...> wrote:
> I'd be very interested in hearing a "state of matplotlib" talk.
>
> On Fri, Mar 13, 2015, 11:29 Phil Elson <pel...@gm...> wrote:
>
>> Orchestrating MPL tutorials and talks in this thread would be a good
>> idea. I'd be happy to help anybody planning on submitting anything relating
>> specifically to matplotlib, and wonder if we should do a "state of
>> matplotlib" type talk similar to the one Mike did 2 years ago.
>>
>> On 13 March 2015 at 02:05, Benjamin Root <ben...@ou...> wrote:
>>
>>> Yes, I plan to submit my time-honored, and requested "Anatomy of
>>> Matplotlib" tutorial. Now, I am not entirely sure I will be able to attend
>>> the conference this year, so perhaps someone else might be willing to step
>>> in and give it this year?
>>>
>>> Note that my tutorial is geared for beginners. So there is still plenty
>>> of opportunity for someone else to submit a tutorial for more advanced
>>> users!
>>>
>>> Cheers!
>>> Ben Root
>>>
>>> On Thu, Mar 12, 2015 at 6:46 PM, Nelle Varoquaux <
>>> nel...@gm...> wrote:
>>>
>>>> Hi everyone,
>>>>
>>>> Is someone submitting a tutorial on matplotlib? The call for tutorial
>>>> is open, and I think it would be nice to have one on matplotlib.
>>>>
>>>> Cheers,
>>>> N
>>>>
>>>> ---------- Forwarded message ----------
>>>> From: SciPy 2015 Organizers <sci...@sc...>
>>>> Date: 11 March 2015 at 01:02
>>>> Subject: SciPy 2015 CFP Email 2
>>>> To: nel...@gm...
>>>>
>>>>
>>>> [image: SciPy 2015 Logo]
>>>> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://scipy2015.scipy.org/ehome/index.php%7CQ%7Ceventid%7CE%7C115969%7CA%7C>
>>>>
>>>> Tick-Tock, Tick-Tock:
>>>> T-Minus 6 Days for Tutorial Submissions
>>>> *Due Date: March 16, 2015*
>>>>
>>>> The SciPy experience kicks off with two days of tutorials
>>>> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://scipy2015.scipy.org/ehome/115969/259288/%7CQ%7C>
>>>> (July 6-7). These sessions provide extremely affordable access to expert
>>>> training, and consistently receive fantastic feedback from participants.
>>>> We're looking for submissions on topics from introductory to advanced -
>>>> we'll have attendees across the gamut looking to learn. Plus, you can earn
>>>> an instructor stipend to apply towards your conference participation. Visit
>>>> the SciPy 2015 website for details
>>>> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://scipy2015.scipy.org>
>>>> or submit a proposal here
>>>> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://www.scipy2015.scipy.org/eselectv2/frontend/index/115969>
>>>> .
>>>>
>>>> Submit a Tutorial Proposal Here
>>>> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://www.scipy2015.scipy.org/eselectv2/frontend/index/115969> Talk
>>>> and Poster Proposals Due April 1st
>>>>
>>>> There's always something new and exciting going on in the world of
>>>> Science + Python, this is your chance to get up and talk about it!
>>>>
>>>> *Visit the SciPy 2015 website
>>>> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://scipy2015.scipy.org/ehome/index.php%7CQ%7Ceventid%7CE%7C115969%7CA%7C>
>>>> for full details or click here to submit a proposal
>>>> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://www.scipy2015.scipy.org/eselectv2/frontend/index/115969>.*
>>>> Choose a topic in one of the 3 main conference tracks:
>>>>
>>>> - Scientific Computing in Python (General track)
>>>> - Python in Data Science
>>>> - Quantitative and Computational Social Sciences
>>>>
>>>> * And/or submit for one of the 7 domain-specific mini-symposia
>>>> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://www.scipy2015.scipy.org/eselectv2/frontend/index/115969>:*
>>>>
>>>> - Astronomy and astrophysics
>>>> - Computational life and medical sciences
>>>> - Engineering
>>>> - Geographic information systems (GIS)
>>>> - Geophysics
>>>> - Oceanography and meteorology
>>>> - Visualization, vision and imaging
>>>>
>>>> Submit a Talk or Poster Proposal Here
>>>> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://www.scipy2015.scipy.org/eselectv2/frontend/index/115969> Need
>>>> some inspiration? Follow @SciPy on Twitter
>>>> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=https://twitter.com/scipyconf>
>>>> for highlights from previous SciPy conferences and all of the latest 2015
>>>> updates.
>>>>
>>>> - Previous year's conferences with talk information
>>>> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://conference.scipy.org/past.html>
>>>> - SciPy 2014 Talk & Tutorial Video playlist
>>>> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://www.youtube.com/playlist%7CQ%7Clist%7CE%7CPLYx7XA2nY5GfuhCvStxgbynFNrxr3VFog>
>>>> - SciPy 2013 Talk & Tutorial Video playlist
>>>> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://www.youtube.com/playlist%7CQ%7Clist%7CE%7CPLYx7XA2nY5GeTWcUQTbXVdllyp-Ie3r-y>
>>>>
>>>> Financial Scholarship Applications Now Being Accepted
>>>>
>>>> With the support of our sponsors, the SciPy conference provides
>>>> financial assistance to attendees based on both community contribution and
>>>> financial need.
>>>>
>>>> In 2014 we were able to support 19 applicants, including 5 diversity
>>>> aid recipients, selected for their outstanding contributions to open source
>>>> scientific Python projects. *If you'd like to be considered for
>>>> financial scholarship, please apply here
>>>> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://scipy2015.scipy.org/ehome/115969/259279/?&>
>>>> before April 15, 2015.*
>>>> Sponsor Thank Yous! We gratefully recognize our SciPy conference
>>>> sponsors, whose contributions ensure the accessibility of the conference
>>>> and growth of the important work being done by the scientific Python
>>>> community.
>>>>
>>>> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=www.kitware.com>
>>>>
>>>> *This week's sponsor highlight is silver sponsor, Kitware:*
>>>> * Kitware, Inc. is a leader in the creation and support of open-source
>>>> software and state of the art technology. By fostering extended,
>>>> collaborative communities, Kitware is able to provide flexible,
>>>> cost-effective visualization, computer vision, medical imaging, data
>>>> publishing, and quality software process solutions to a variety of academic
>>>> and government institutions and private corporations worldwide.*
>>>>
>>>> ------------------------------
>>>> Know a company that might want to sponsor SciPy 2015 or provide
>>>> scholarship funding? Share the sponsorship prospectus
>>>> <https://www.eiseverywhere.com/emarketing/go.php?i=182077&e=bmVsbGUudmFyb3F1YXV4QGdtYWlsLmNvbQ==&l=http://scipy2015.scipy.org/ehome/115969/259285/?&>
>>>> --------------------------------------
>>>> To unsubscribe from this mailing list, please click here
>>>> <https://www.eiseverywhere.com/emarketing/profile.php?id=BctbGJi3EKrTogVy7ttdnrT0TTsw6Zr%2FRzGhBzBXaDM%3D>
>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------------------------
>>>> Dive into the World of Parallel Programming The Go Parallel Website,
>>>> sponsored
>>>> by Intel and developed in partnership with Slashdot Media, is your hub
>>>> for all
>>>> things parallel software development, from weekly thought leadership
>>>> blogs to
>>>> news, videos, case studies, tutorials and more. Take a look and join the
>>>> conversation now. http://goparallel.sourceforge.net/
>>>> _______________________________________________
>>>> Matplotlib-devel mailing list
>>>> Mat...@li...
>>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
>>>>
>>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Dive into the World of Parallel Programming The Go Parallel Website,
>>> sponsored
>>> by Intel and developed in partnership with Slashdot Media, is your hub
>>> for all
>>> things parallel software development, from weekly thought leadership
>>> blogs to
>>> news, videos, case studies, tutorials and more. Take a look and join the
>>> conversation now. http://goparallel.sourceforge.net/
>>> _______________________________________________
>>> Matplotlib-devel mailing list
>>> Mat...@li...
>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
>>>
>>>
>> ------------------------------------------------------------
>> ------------------
>> Dive into the World of Parallel Programming The Go Parallel Website,
>> sponsored
>> by Intel and developed in partnership with Slashdot Media, is your hub
>> for all
>> things parallel software development, from weekly thought leadership
>> blogs to
>> news, videos, case studies, tutorials and more. Take a look and join the
>> conversation now. http://goparallel.sourceforge.net/
>> _______________________________________________
>> Matplotlib-devel mailing list
>> Mat...@li...
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
>>
> ------------------------------------------------------------
> ------------------
> Dive into the World of Parallel Programming The Go Parallel Website,
> sponsored
> by Intel and developed in partnership with Slashdot Media, is your hub for
> all
> things parallel software development, from weekly thought leadership blogs
> to
> news, videos, case studies, tutorials and more. Take a look and join the
> conversation now. http://goparallel.sourceforge.net/
> _______________________________________________
> Matplotlib-devel mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
>

I am proposing to move the MEPs from the wiki into the main documentation.
https://github.com/matplotlib/matplotlib/pull/4249
The main benifits to this are to make preserve the MEPs long term, to keep
a better history of their development, and to improve the discussion around
them.
The motivation behind using the wiki was to reduce the barriers to working
on the MEP, but it has not worked out as well as hoped. Having to modify
MEPs via a PR does increase the barriers on working on them, but it allows
us to apply the tools we already use for code review to them.
Tom

wouldn't `np.sqrt(np.ones(NFFT)**2).sum()` just be NFFT? So, it looks like
our power spectra isn't normalized at that point. But, IIRC, the code that
calls this helper function does normalize the result if the user specifies
it to be.
Ben Root
On Thu, Mar 26, 2015 at 8:35 AM, Thomas Caswell <tca...@gm...> wrote:
> Forwarding an email to the devel list, we seem to have an error in mlab.
>
> Dimitris: Please send future issues like this directly to the mailing
> list or create an issue on GH.
>
> ---------- Forwarded message ---------
> From: Dimitris Daniel <dda...@gm...>
> Date: Thu, Mar 26, 2015 at 4:04 AM
> Subject: possible issue with _spectral_helper function in
> matplotlib/mlab.py when compensate windowing loss
> To: <tca...@gm...>, <mar...@gm...>
>
>
> Dear Mr. Thomas and Mr. Martin,
>
> First of all I would like to thank you for your work.
> My name is Dimitris Daniel and I use _spectral_helper in a process.
>
> I think that there is a problem when we try to compensate windowing loss.
>
> You use the row:
> result /= (np.abs(windowVals)**2).sum()
>
> However as I can see in Bendat & Piersol Sec 11.5.2. (see attached 3.png)
> I think the right is something like:
>
> result *= np.sqrt((np.ones(NFFT)**2).sum() /
> (np.abs(windowVals)**2).sum())
>
> Actually I had some correlation problems with the data from a customer of
> my for which I build a script for Signal Analysis.
>
> He gave me the input signal and the output he gets from the hardware he is
> using.
>
> I use some parts from your functions and it was not possible to get the
> same results.
> By changing this row the results are matching together.
>
>
> Am I missing something or am I right.
>
> Thank you very much for your time and sorry for any inconvenience.
>
> I am looking forward to your response.
> Best Regards,
> Dimitris Daniel
>
>
>
>
>
>
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>

Forwarding an email to the devel list, we seem to have an error in mlab.
Dimitris: Please send future issues like this directly to the mailing list
or create an issue on GH.
---------- Forwarded message ---------
From: Dimitris Daniel <dda...@gm...>
Date: Thu, Mar 26, 2015 at 4:04 AM
Subject: possible issue with _spectral_helper function in
matplotlib/mlab.py when compensate windowing loss
To: <tca...@gm...>, <mar...@gm...>
Dear Mr. Thomas and Mr. Martin,
First of all I would like to thank you for your work.
My name is Dimitris Daniel and I use _spectral_helper in a process.
I think that there is a problem when we try to compensate windowing loss.
You use the row:
result /= (np.abs(windowVals)**2).sum()
However as I can see in Bendat & Piersol Sec 11.5.2. (see attached 3.png) I
think the right is something like:
result *= np.sqrt((np.ones(NFFT)**2).sum() / (np.abs(windowVals)**2).sum())
Actually I had some correlation problems with the data from a customer of
my for which I build a script for Signal Analysis.
He gave me the input signal and the output he gets from the hardware he is
using.
I use some parts from your functions and it was not possible to get the
same results.
By changing this row the results are matching together.
Am I missing something or am I right.
Thank you very much for your time and sorry for any inconvenience.
I am looking forward to your response.
Best Regards,
Dimitris Daniel