From leslie.sox at gmail.com  Fri May  1 15:11:34 2015
From: leslie.sox at gmail.com (Leslie Sox)
Date: Fri, 1 May 2015 09:11:34 -0400
Subject: [TriPython] Two Free Python Books
In-Reply-To: <55429786.3010703@unc.edu>
References: <55429786.3010703@unc.edu>
Message-ID: <CAHK1xyjZmJkTiR1z_ySJcos03=GFK+Cc0snRcGdPzjFiMCUicA@mail.gmail.com>

Thanks for sharing these books Chris. I just finished a GIS project
modeling terrain in 3D from point clouds. I used a little Python coding to
automate the file handling to create a time-series. For a beak, getting
back into statistical analysis is probably a good idea.

On Thu, Apr 30, 2015 at 4:58 PM, Chris Calloway <cbc at unc.edu> wrote:

> Via Alya Stein of PyCU (Champaign-Urbana Python).
>
> Free book about elementary stats using Pandas (as much about Pandas as
> about stats):
>
> http://greenteapress.com/thinkstats2/index.html
>
> Free book about Flask:
>
> https://exploreflask.com/index.html
>
> --
> Sincerely,
>
> Chris Calloway, Applications Analyst
> UNC Renaissance Computing Institute
> 100 Europa Drive, Suite 540, Chapel Hill, NC 27517
> (919) 599-3530
> _______________________________________________
> TriZPUG mailing list
> TriZPUG at python.org
> https://mail.python.org/mailman/listinfo/trizpug
> http://tripython.org is the Triangle Python Users Group
>



-- 
Regards,

Leslie John Sox
919-931-5644
leslie.sox at gmail.com

From ncdave4life at gmail.com  Fri May  1 20:13:57 2015
From: ncdave4life at gmail.com (David Burton)
Date: Fri, 1 May 2015 14:13:57 -0400
Subject: [TriPython] Two Free Python Books
In-Reply-To: <CAHK1xyjZmJkTiR1z_ySJcos03=GFK+Cc0snRcGdPzjFiMCUicA@mail.gmail.com>
References: <55429786.3010703@unc.edu>
 <CAHK1xyjZmJkTiR1z_ySJcos03=GFK+Cc0snRcGdPzjFiMCUicA@mail.gmail.com>
Message-ID: <CALF61u7xg0CCDSVkomf5VJTe4c2ie5W3nqtQv5iDp0f-EjUfjg@mail.gmail.com>

Google finds lots and lots of free Python books, tutorials, etc.  (Some are
probably pirated; beware of phishing, fake-Flashplayer trojans, etc.)  Here
are some sample Google searches:

"115 Python programming books"

"Python Programming eBooks Collection 2013"

"Python book collection"

"80+" "free Python tutorials"

"92 Python programming books"

"113 eBooks about Python Programming"

"10 Free Python Programming Books"
(and be sure to read the comments)

"20 of the Best Free Python Books"

"Free Python Programming eBooks Download"

Dave




On Fri, May 1, 2015 at 9:11 AM, Leslie Sox <leslie.sox at gmail.com> wrote:

> Thanks for sharing these books Chris. I just finished a GIS project
> modeling terrain in 3D from point clouds. I used a little Python coding to
> automate the file handling to create a time-series. For a beak, getting
> back into statistical analysis is probably a good idea.
>
> On Thu, Apr 30, 2015 at 4:58 PM, Chris Calloway <cbc at unc.edu> wrote:
>
> > Via Alya Stein of PyCU (Champaign-Urbana Python).
> >
> > Free book about elementary stats using Pandas (as much about Pandas as
> > about stats):
> >
> > http://greenteapress.com/thinkstats2/index.html
> >
> > Free book about Flask:
> >
> > https://exploreflask.com/index.html
> >
> > --
> > Sincerely,
> >
> > Chris Calloway, Applications Analyst
> > UNC Renaissance Computing Institute
> > 100 Europa Drive, Suite 540, Chapel Hill, NC 27517
> > (919) 599-3530
> > _______________________________________________
> > TriZPUG mailing list
> > TriZPUG at python.org
> > https://mail.python.org/mailman/listinfo/trizpug
> > http://tripython.org is the Triangle Python Users Group
> >
>
>
>
> --
> Regards,
>
> Leslie John Sox
> 919-931-5644
> leslie.sox at gmail.com
> _______________________________________________
> TriZPUG mailing list
> TriZPUG at python.org
> https://mail.python.org/mailman/listinfo/trizpug
> http://tripython.org is the Triangle Python Users Group
>

From cbc at unc.edu  Fri May  1 20:36:31 2015
From: cbc at unc.edu (Chris Calloway)
Date: Fri, 1 May 2015 14:36:31 -0400
Subject: [TriPython] Two Free Python Books
In-Reply-To: <CALF61u7xg0CCDSVkomf5VJTe4c2ie5W3nqtQv5iDp0f-EjUfjg@mail.gmail.com>
References: <55429786.3010703@unc.edu>
 <CAHK1xyjZmJkTiR1z_ySJcos03=GFK+Cc0snRcGdPzjFiMCUicA@mail.gmail.com>
 <CALF61u7xg0CCDSVkomf5VJTe4c2ie5W3nqtQv5iDp0f-EjUfjg@mail.gmail.com>
Message-ID: <5543C7AF.5040305@unc.edu>

On 5/1/2015 2:13 PM, David Burton wrote:
> Google finds lots and lots of free Python books, tutorials, etc.  (Some are
> probably pirated; beware of phishing, fake-Flashplayer trojans, etc.)  Here
> are some sample Google searches:

That's why I was pointing those two in particular out. I received the 
links from someone who vetted them for another user group. Then I went 
and vetted them and thought they would be useful to this group, 
particularly the stats book. Part of the problem is that there are too 
many, particularly free, resources. That was why I put forward those 
two. They address things that people coming to project nights commonly 
ask about.

-- 
Sincerely,

Chris Calloway, Applications Analyst
UNC Renaissance Computing Institute
100 Europa Drive, Suite 540, Chapel Hill, NC 27517
(919) 599-3530

From brian_frizzelle at unc.edu  Fri May  1 20:36:59 2015
From: brian_frizzelle at unc.edu (Frizzelle, Brian)
Date: Fri, 1 May 2015 18:36:59 +0000
Subject: [TriPython] Two Free Python Books
In-Reply-To: <5543C7AF.5040305@unc.edu>
References: <55429786.3010703@unc.edu>
 <CAHK1xyjZmJkTiR1z_ySJcos03=GFK+Cc0snRcGdPzjFiMCUicA@mail.gmail.com>
 <CALF61u7xg0CCDSVkomf5VJTe4c2ie5W3nqtQv5iDp0f-EjUfjg@mail.gmail.com>
 <5543C7AF.5040305@unc.edu>
Message-ID: <0B898DA328415849A2E04230F6315CCC820360CE@ITS-MSXMBS4M.ad.unc.edu>

Github also hosts hundreds of free programming books, including several dozen for Python alone.

https://github.com/vhf/free-programming-books/blob/master/free-programming-books.md#python

--
Brian Frizzelle
Director of Spatial Analysis
Carolina Population Center
University of North Carolina at Chapel Hill
206 W. Franklin St.
Chapel Hill, NC 27516
Voice: 919-962-6163
Fax: 919-445-0740
Email: brian_frizzelle at unc.edu


-----Original Message-----
From: TriZPUG [mailto:trizpug-bounces+brian_frizzelle=unc.edu at python.org] On Behalf Of Chris Calloway
Sent: Friday, May 01, 2015 2:37 PM
To: trizpug at python.org
Subject: Re: [TriPython] Two Free Python Books

On 5/1/2015 2:13 PM, David Burton wrote:
> Google finds lots and lots of free Python books, tutorials, etc.  
> (Some are probably pirated; beware of phishing, fake-Flashplayer 
> trojans, etc.)  Here are some sample Google searches:

That's why I was pointing those two in particular out. I received the links from someone who vetted them for another user group. Then I went and vetted them and thought they would be useful to this group, particularly the stats book. Part of the problem is that there are too many, particularly free, resources. That was why I put forward those two. They address things that people coming to project nights commonly ask about.

--
Sincerely,

Chris Calloway, Applications Analyst
UNC Renaissance Computing Institute
100 Europa Drive, Suite 540, Chapel Hill, NC 27517
(919) 599-3530
_______________________________________________
TriZPUG mailing list
TriZPUG at python.org
https://mail.python.org/mailman/listinfo/trizpug
http://tripython.org is the Triangle Python Users Group

From aikimark at aol.com  Sat May  2 12:48:34 2015
From: aikimark at aol.com (Mark Hutchinson)
Date: Sat, 2 May 2015 06:48:34 -0400
Subject: [TriPython] best-of suggestion
Message-ID: <14d143df686-7e83-44794@webstg-a07.mail.aol.com>

Last year, I suggested that we might create a page of best-of Python videos.  Maybe we should include a section on books as well.  What do you think of that inclusion?


Mark Hutchinson

From tdsimpson at gmail.com  Mon May  4 15:08:54 2015
From: tdsimpson at gmail.com (Troy S)
Date: Mon, 4 May 2015 09:08:54 -0400
Subject: [TriPython] best-of suggestion
In-Reply-To: <14d143df686-7e83-44794@webstg-a07.mail.aol.com>
References: <14d143df686-7e83-44794@webstg-a07.mail.aol.com>
Message-ID: <CAD_NLdyjYLEZpMxJMjXvawus7c+2=pk2i58a0yb6KLv9uf5YmQ@mail.gmail.com>

Books, Yes.

On Sat, May 2, 2015 at 6:48 AM, Mark Hutchinson via TriZPUG <
trizpug at python.org> wrote:

> Last year, I suggested that we might create a page of best-of Python
> videos.  Maybe we should include a section on books as well.  What do you
> think of that inclusion?
>
>
> Mark Hutchinson
> _______________________________________________
> TriZPUG mailing list
> TriZPUG at python.org
> https://mail.python.org/mailman/listinfo/trizpug
> http://tripython.org is the Triangle Python Users Group
>



-- 
Troy Simpson
Phone: 919-627-7755

From devin at nacredata.com  Mon May  4 17:03:12 2015
From: devin at nacredata.com (Devin Ceartas)
Date: Mon, 04 May 2015 11:03:12 -0400
Subject: [TriPython] best-of suggestion
In-Reply-To: <CAD_NLdyjYLEZpMxJMjXvawus7c+2=pk2i58a0yb6KLv9uf5YmQ@mail.gmail.com>
References: <14d143df686-7e83-44794@webstg-a07.mail.aol.com>
 <CAD_NLdyjYLEZpMxJMjXvawus7c+2=pk2i58a0yb6KLv9uf5YmQ@mail.gmail.com>
Message-ID: <13B4B7E3-6D51-460E-99F0-DE647631BAC5@nacredata.com>

Personally I fear "best" might be a bit too vague/general. I often find 
it challenging to find books well targeted at where I'm at: a 
professional programmer with more than two decades of experience who 
happens to be relatively new to Python (always learning new things). For 
me, there are always way too many beginner books which reiterate what a 
"for" loop is...

So maybe if there were just a bit more info.. best for whom? What about 
a given book is best?



On 4 May 2015, at 9:08, Troy S wrote:

> Books, Yes.
>
> On Sat, May 2, 2015 at 6:48 AM, Mark Hutchinson via TriZPUG <
> trizpug at python.org> wrote:
>
>> Last year, I suggested that we might create a page of best-of Python
>> videos.  Maybe we should include a section on books as well.  What do 
>> you
>> think of that inclusion?
>>
>>
>> Mark Hutchinson
>> _______________________________________________
>> TriZPUG mailing list
>> TriZPUG at python.org
>> https://mail.python.org/mailman/listinfo/trizpug
>> http://tripython.org is the Triangle Python Users Group
>>
>
>
>
> -- 
> Troy Simpson
> Phone: 919-627-7755
> _______________________________________________
> TriZPUG mailing list
> TriZPUG at python.org
> https://mail.python.org/mailman/listinfo/trizpug
> http://tripython.org is the Triangle Python Users Group



devin
--
contact info: http://nacredata.com/devin

Ask me about Google Apps for Work: hosting your domain-branded email, 
calendar and cloud storage on Google's infrastructure.

From cbc at unc.edu  Mon May  4 22:55:30 2015
From: cbc at unc.edu (Chris Calloway)
Date: Mon, 4 May 2015 16:55:30 -0400
Subject: [TriPython] best-of suggestion
In-Reply-To: <14d143df686-7e83-44794@webstg-a07.mail.aol.com>
References: <14d143df686-7e83-44794@webstg-a07.mail.aol.com>
Message-ID: <5547DCC2.6080207@unc.edu>

On 5/2/2015 6:48 AM, Mark Hutchinson via TriZPUG wrote:
> Last year, I suggested that we might create a page of best-of Python videos.  Maybe we should include a section on books as well.  What do you think of that inclusion?

I couldn't find your suggestion from last year. May I just put you in 
charge of this page and you can just go nuts however you want with it?:

http://tripython.org/up-to-speed

That page needs some serious love. It has a section for online books and 
a section for videos, though. You can populate it with whatever you 
think is best. Best-of pages require frequent gardening to stay relevant 
and I feel like there are so many best-of Python pages now that we might 
need a best-of Python best-of list.

May I show you how to edit this page at a project night?

-- 
Sincerely,

Chris Calloway, Applications Analyst
UNC Renaissance Computing Institute
100 Europa Drive, Suite 540, Chapel Hill, NC 27517
(919) 599-3530

From cbc at unc.edu  Mon May  4 23:00:56 2015
From: cbc at unc.edu (Chris Calloway)
Date: Mon, 4 May 2015 17:00:56 -0400
Subject: [TriPython] Raleigh Project Night
Message-ID: <5547DE08.200@unc.edu>

Tomorrow (Tuesday) is Raleigh Project Night. Pizza will be in attendance.

http://tripython.org/Members/sgambino/may-15-rpn

When: Tuesday May 5, 6-9pm
Where: WebAssign, NCSU Centennial Campus
        1791 Varsity Drive, Suite 200, Raleigh

"""
Raleigh Project Night meets on first Tuesdays. Have a project you want 
to show off, share, seek help with, or just get some work done 
surrounded by like minded Python lovers? Join us for our monthly project 
night and do just that! Don't have something to work on? Just need some 
help with Python? Show up and enjoy the energy, sprint on an open source 
project, find something interesting to contribute to or be inspired by! 
The setting is informal and there is no schedule, so don't worry if you 
show up past the start time. Whether you are a Python newbie needing 
help or have an open source project you want to share, come hang out and 
hack. Plenty of free after hours parking is available in the upper level 
of the deck behind WebAssign (turn through the median just before the 
intersection of Varsity and Main Campus Drives). If the door is locked, 
call the number posted on the door.
"""

-- 
Sincerely,

Chris Calloway, Applications Analyst
UNC Renaissance Computing Institute
100 Europa Drive, Suite 540, Chapel Hill, NC 27517
(919) 599-3530

From yucel.gunes at gmail.com  Tue May  5 18:12:26 2015
From: yucel.gunes at gmail.com (Gunes Yucel)
Date: Tue, 5 May 2015 12:12:26 -0400
Subject: [TriPython] CityCampNC 2015 is June 11-13
Message-ID: <CABgMHepdNhqZ-vZFa5Ta7MzzUybs4n7oF_mDTb8J7Gt5JDx20g@mail.gmail.com>

Hi All,

I would like to sharing the following event with all of you.
Thank you.
Gunes


************************

CityCampNC 2015 is June 11-13

We're excited to announce that this year's event will take place June 11-13
in Raleigh.

CityCamp NC is three days of open sourced talks, workshops, and hands-on
problem solving, to re-imagine the way the web, applications, technology,
and participation will shape the future of NC cities. CityCamp brings
together government, business, neighborhood, non-profit, and academic
communities to work toward next generation solutions for local
municipalities.

**Event Schedule and Location**

On Thursday, June 11, join us for lightning talks and the ?Taste of
CityCamp? at HQ Raleigh.

The conference continues at the Wake County Commons building on Friday and
Saturday, June 12-13 with a GIS panel, the keynote presentation (featuring
Mark Headd), unconference workshops, and hackathon. Information will
continue to be made available as we continue planning the event at
http://citycampnc.org... <http://citycampnc.org/>? (http://citycampnc.org...
<http://citycampnc.org/>?)

Registration will open within the next couple of weeks, so stay tuned!

**Interesting in Helping Out with CityCampNC 2015?**

We have an awesome group of volunteers for this year's event so far, and
we'd love your help, too. We're holding a virtual meeting every Monday
until the event. You can RSVP for the meetings at http://www.meetup.com...
<http://www.meetup.com/Triangle-Code-for-America/>? where all of the
CityCamp NC meetings are posted.

We look forward to seeing you there! If you have questions, please reply to
armcclelland at gmail.com. If you haven't already, you can also follow
@citycampnc (http://twitter.com/ci... <http://twitter.com/citycampnc>?) on
Twitter for regular updates.

Thank you.

See you there!

Ashley McClelland
armcclelland at gmail.com

From chad.vawter at gmail.com  Wed May  6 15:52:53 2015
From: chad.vawter at gmail.com (Chad Vawter)
Date: Wed, 6 May 2015 09:52:53 -0400
Subject: [TriPython] Spark and Python
Message-ID: <02da01d08803$f324d0a0$d96e71e0$@gmail.com>

Hello, everyone.

 

I've just joined the TriPUG and am looking forward to participating.  I've
been working with Spark and Python for scalable, streaming, in-memory data
analytics lately.  If anyone's interested in an overview, please let me
know.

 

Regards,

Chad

 

Chad Vawter

chad.vawter at gmail.com <mailto:chad.vawter at gmail.com> 

 


From cbc at unc.edu  Wed May  6 17:50:17 2015
From: cbc at unc.edu (Chris Calloway)
Date: Wed, 6 May 2015 11:50:17 -0400
Subject: [TriPython] Spark and Python
In-Reply-To: <02da01d08803$f324d0a0$d96e71e0$@gmail.com>
References: <02da01d08803$f324d0a0$d96e71e0$@gmail.com>
Message-ID: <554A3839.4090509@unc.edu>

On 5/6/2015 9:52 AM, Chad Vawter wrote:
> I've just joined the TriPUG and am looking forward to participating.  I've
> been working with Spark and Python for scalable, streaming, in-memory data
> analytics lately.  If anyone's interested in an overview, please let me
> know.

Hi, Chad. Welcome to TriPython. You can find lots of information about 
the group here:

http://tripython.org

As I asked you in a meetup message, I am very interested in hearing what 
you have to say about Python and Spark (and hopefully PySpark).

TriPython is a do-acracy. Like Python, we don't ask for permission. Each 
person decides for themselves and does. If you want to give us a Spark 
and Python overview, you can just announce so here. Then we will help 
you schedule and publicize it.

To help schedule your overview, which sounds like a feature length 
monthly meeting presentation (or I would hope it is), you just need to 
let us know on this list which meeting date (that is not already 
scheduled) you would like to claim for your presentation. You can look 
at our meetings page to see that May and June are already claimed:

http://tripython.org/meetings/

Would you like to make a presentation at our July meeting in Chapel Hill?

Thank you again for joining and for being so ready to participate and 
contribute.

-- 
Sincerely,

Chris Calloway, Applications Analyst
UNC Renaissance Computing Institute
100 Europa Drive, Suite 540, Chapel Hill, NC 27517
(919) 599-3530

From cbc at unc.edu  Wed May  6 22:08:12 2015
From: cbc at unc.edu (Chris Calloway)
Date: Wed, 6 May 2015 16:08:12 -0400
Subject: [TriPython] TriPython May 2015 Meeting: Deploying Python
	Applications with HTTPD
Message-ID: <554A74AC.7000801@unc.edu>

http://tripython.org/Members/sgambino/may-15-mtg/

When: Thursday, May 28, 7pm
Where: WebAssign, NCSU Centennial Campus
        1791 Varsity Drive, Suite 200, Raleigh

We are very lucky this month to hear from Jeff Trawick, a 15-year Apache 
committer veteran, who will share his expertise concerning the different 
ways Python applications may be deployed on httpd, the pros and cons of 
the various techniques, and recommendations for how to deploy 
applications generated with common Python web frameworks. Extemporaneous 
"lightning talks" of 5-10 minute duration are also welcome and don't 
need to be pre-announced. Plenty of free after hours parking is 
available in the upper level of the deck behind WebAssign (turn through 
the median just before the intersection of Varsity and Main Campus 
Drives). If the door is locked, call the number posted on the door. An 
after-meeting location for food and beverage will be decided at the 
meeting (usually BaDa Wings for the Thursday night draught specials).

-- 
Sincerely,

Chris Calloway, Applications Analyst
UNC Renaissance Computing Institute
100 Europa Drive, Suite 540, Chapel Hill, NC 27517
(919) 599-3530

From chad.vawter at gmail.com  Thu May  7 23:41:39 2015
From: chad.vawter at gmail.com (Chad Vawter)
Date: Thu, 7 May 2015 17:41:39 -0400
Subject: [TriPython] PySpark Presentation
Message-ID: <05e801d0890e$9a6cbf70$cf463e50$@gmail.com>


Thanks, Chris.  I like the group's approach to things.

I'll go through an overview of "PySpark for In-Memory Data Analytics" at the
July meeting in Chapel Hill.  

Regards,
Chad

-----Original Message-----
From: TriZPUG [mailto:trizpug-bounces+chad.vawter=gmail.com at python.org] On
Behalf Of trizpug-request at python.org
Sent: Thursday, May 07, 2015 6:00 AM
To: trizpug at python.org
Subject: TriZPUG Digest, Vol 85, Issue 6

Send TriZPUG mailing list submissions to
	trizpug at python.org

To subscribe or unsubscribe via the World Wide Web, visit
	https://mail.python.org/mailman/listinfo/trizpug
or, via email, send a message with subject or body 'help' to
	trizpug-request at python.org

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	trizpug-owner at python.org

When replying, please edit your Subject line so it is more specific than
"Re: Contents of TriZPUG digest..."


Today's Topics:

   1. Spark and Python (Chad Vawter)
   2. Re: Spark and Python (Chris Calloway)
   3. TriPython May 2015 Meeting: Deploying Python	Applications
      with HTTPD (Chris Calloway)


----------------------------------------------------------------------

Message: 1
Date: Wed, 6 May 2015 09:52:53 -0400
From: "Chad Vawter" <chad.vawter at gmail.com>
To: <trizpug at python.org>
Subject: [TriPython] Spark and Python
Message-ID: <02da01d08803$f324d0a0$d96e71e0$@gmail.com>
Content-Type: text/plain;	charset="us-ascii"

Hello, everyone.

 

I've just joined the TriPUG and am looking forward to participating.  I've
been working with Spark and Python for scalable, streaming, in-memory data
analytics lately.  If anyone's interested in an overview, please let me
know.

 

Regards,

Chad

 

Chad Vawter

chad.vawter at gmail.com <mailto:chad.vawter at gmail.com> 

 



------------------------------

Message: 2
Date: Wed, 6 May 2015 11:50:17 -0400
From: Chris Calloway <cbc at unc.edu>
To: <trizpug at python.org>
Subject: Re: [TriPython] Spark and Python
Message-ID: <554A3839.4090509 at unc.edu>
Content-Type: text/plain; charset="windows-1252"; format=flowed

On 5/6/2015 9:52 AM, Chad Vawter wrote:
> I've just joined the TriPUG and am looking forward to participating.  
> I've been working with Spark and Python for scalable, streaming, 
> in-memory data analytics lately.  If anyone's interested in an 
> overview, please let me know.

Hi, Chad. Welcome to TriPython. You can find lots of information about the
group here:

http://tripython.org

As I asked you in a meetup message, I am very interested in hearing what you
have to say about Python and Spark (and hopefully PySpark).

TriPython is a do-acracy. Like Python, we don't ask for permission. Each
person decides for themselves and does. If you want to give us a Spark and
Python overview, you can just announce so here. Then we will help you
schedule and publicize it.

To help schedule your overview, which sounds like a feature length monthly
meeting presentation (or I would hope it is), you just need to let us know
on this list which meeting date (that is not already
scheduled) you would like to claim for your presentation. You can look at
our meetings page to see that May and June are already claimed:

http://tripython.org/meetings/

Would you like to make a presentation at our July meeting in Chapel Hill?

Thank you again for joining and for being so ready to participate and
contribute.

--
Sincerely,

Chris Calloway, Applications Analyst
UNC Renaissance Computing Institute
100 Europa Drive, Suite 540, Chapel Hill, NC 27517
(919) 599-3530


------------------------------

Message: 3
Date: Wed, 6 May 2015 16:08:12 -0400
From: Chris Calloway <cbc at unc.edu>
To: <trizpug at python.org>
Subject: [TriPython] TriPython May 2015 Meeting: Deploying Python
	Applications with HTTPD
Message-ID: <554A74AC.7000801 at unc.edu>
Content-Type: text/plain; charset="utf-8"; format=flowed

http://tripython.org/Members/sgambino/may-15-mtg/

When: Thursday, May 28, 7pm
Where: WebAssign, NCSU Centennial Campus
        1791 Varsity Drive, Suite 200, Raleigh

We are very lucky this month to hear from Jeff Trawick, a 15-year Apache
committer veteran, who will share his expertise concerning the different
ways Python applications may be deployed on httpd, the pros and cons of the
various techniques, and recommendations for how to deploy applications
generated with common Python web frameworks. Extemporaneous "lightning
talks" of 5-10 minute duration are also welcome and don't need to be
pre-announced. Plenty of free after hours parking is available in the upper
level of the deck behind WebAssign (turn through the median just before the
intersection of Varsity and Main Campus Drives). If the door is locked, call
the number posted on the door. An after-meeting location for food and
beverage will be decided at the meeting (usually BaDa Wings for the Thursday
night draught specials).

--
Sincerely,

Chris Calloway, Applications Analyst
UNC Renaissance Computing Institute
100 Europa Drive, Suite 540, Chapel Hill, NC 27517
(919) 599-3530


------------------------------

Subject: Digest Footer

_______________________________________________
TriZPUG mailing list
TriZPUG at python.org
https://mail.python.org/mailman/listinfo/trizpug
http://tripython.org is the Triangle Python Users Group


------------------------------

End of TriZPUG Digest, Vol 85, Issue 6
**************************************


From cbc at unc.edu  Fri May  8 00:14:45 2015
From: cbc at unc.edu (Chris Calloway)
Date: Thu, 7 May 2015 18:14:45 -0400
Subject: [TriPython] PySpark Presentation
In-Reply-To: <05e801d0890e$9a6cbf70$cf463e50$@gmail.com>
References: <05e801d0890e$9a6cbf70$cf463e50$@gmail.com>
Message-ID: <554BE3D5.5070408@unc.edu>

On 5/7/2015 5:41 PM, Chad Vawter wrote:
> Thanks, Chris.  I like the group's approach to things.
>
> I'll go through an overview of "PySpark for In-Memory Data Analytics" at the
> July meeting in Chapel Hill.

Thank you, Chad. I'll create a meeting announcement and have you review 
it before publication.

-- 
Sincerely,

Chris Calloway, Applications Analyst
UNC Renaissance Computing Institute
100 Europa Drive, Suite 540, Chapel Hill, NC 27517
(919) 599-3530

From cbc at unc.edu  Tue May 12 22:07:32 2015
From: cbc at unc.edu (Chris Calloway)
Date: Tue, 12 May 2015 16:07:32 -0400
Subject: [TriPython] Deadline for Send Luke to SciPy Conference Fundraiser
Message-ID: <55525D84.3030905@unc.edu>

The deadline for early bird registration for SciPy Conference is Friday. 
Therefore, we need to wrap up the fundraiser to send Luke to this 
conference. Thank you to everyone who had contributed thus far. You 
understand that many small contributions achieves the goal. Thank you. 
If you haven't yet contributed, please do so very soon at:

http://www.gofundme.com/vispyqtgraph2015

-- 
Sincerely,

Chris Calloway, Applications Analyst
UNC Renaissance Computing Institute
100 Europa Drive, Suite 540, Chapel Hill, NC 27517
(919) 599-3530

From cbc at unc.edu  Tue May 12 22:21:02 2015
From: cbc at unc.edu (Chris Calloway)
Date: Tue, 12 May 2015 16:21:02 -0400
Subject: [TriPython] Chapel Hill Project Night
Message-ID: <555260AE.90401@unc.edu>

Reminder that we have a Chapel Hill project night tomorrow (Wednesday) 
from 6-9pm. Bring your laptop. Show/leave at your leisure. Pizza will be 
provided.

http://tripython.org/Members/cbc/may-15-chpn

When: Wednesday May 13, 6-9pm
Where: Renaissance Computing Institute (RENCI)
        Biltmore Conference Room, 5th Floor Europa Center
        100 Europa Drive, Suite 590, Chapel Hill

"""
Chapel Hill Project Night meets on second Wednesdays. Have a project you 
want to show off, share, seek help with, or just get some work done 
surrounded by like minded Python lovers? Join us for our monthly project 
night and do just that! Don't have something to work on? Just need some 
help with Python? Show up and enjoy the energy, sprint on an open source 
project, find something interesting to contribute to or be inspired by! 
The setting is informal and there is no schedule, so don't worry if you 
show up past the start time. Whether you are a Python newbie needing 
help or have an open source project you want to share, come hang out and 
hack. Plenty of free after hours parking is available in the RENCI 
parking deck.
"""

-- 
Sincerely,

Chris Calloway, Applications Analyst
UNC Renaissance Computing Institute
100 Europa Drive, Suite 540, Chapel Hill, NC 27517
(919) 599-3530

From trawick at gmail.com  Sun May 17 14:58:56 2015
From: trawick at gmail.com (Jeff Trawick)
Date: Sun, 17 May 2015 08:58:56 -0400
Subject: [TriPython] Nice Ansible e-book for $9.99 (via coupon)
Message-ID: <CAKUrXK41mg5f29qEHKtSzqm-Y-6yWrwGLc-H3O6r1C9ZLCSQsw@mail.gmail.com>

This is "Ansible for Devops" published on LeanPub.  I've had it a couple of
weeks and made good use of it, though in some cases I was left scouring the
internet for particular puzzles I had with a deployment that weren't
covered in the book.  I expect to work through the book over time both to
improve my Ansible use as well as to understand more high-level deployment
patterns.  I think it is pretty well written, and it has plenty of good
case studies.

The set of topics is quite expansive and there are some which haven't been
fleshed out yet, so this is a work in progress with free updates.  (Frankly
I doubt anyone would notice if the small number of incomplete topics were
not mentioned.)  The book covers basic coverage of related tools like
Vagrant and Docker, at a level that you can actually accomplish something
with them.  (One of the examples manages a Flask app with several Docker
containers.)

In the inbox today was a notification of an update to the e-book along with
this coupon link to share:

http://bit.ly/a4d-drupalcon

(I don't know this person, just a happy customer, HTH, etc.)

-- 
Born in Roswell... married an alien...
http://emptyhammock.com/

From cbc at unc.edu  Mon May 18 17:26:45 2015
From: cbc at unc.edu (Chris Calloway)
Date: Mon, 18 May 2015 11:26:45 -0400
Subject: [TriPython] Reminder: Durham Project Night Tonight!
Message-ID: <555A04B5.6050208@unc.edu>

We have a project night tonight at Caktus. It looks it's going to be a 
big one with several new people. If you have helping skills, 
particularly with machine learning, you may be needed. See you there.

http://tripython.org/Members/markdlavin/may-15-dpn

When: Monday, May 18, 6-9pm
Where: Caktus Group, 108 Morris St., Durham
        (come around to the parking lot on the side,
         the door in the far back corner,
         knock loudly if locked or
         look for posted phone number)

"""
Durham Project Night meets on third Mondays. Have a project you want to 
show off, share, seek help with, or just get some work done surrounded 
by like minded Python lovers? Join us for our monthly project night and 
do just that! Don't have something to work on? Just need some help with 
Python? Show up and enjoy the energy, sprint on an open source project, 
find something interesting to contribute to or be inspired by! The 
setting is informal and there is no schedule, so don't worry if you show 
up past the start time. Whether you are a Python newbie needing help or 
have an open source project you want to share, come hang out and hack. 
Park in the municipal deck on the other side of the Arts Council across 
W. Morgan St. The Caktus entrance on Morris St. is labeled "Suite C1" 
near the Civil Right's mural. Just knock or call the number posted on 
the door.
"""

-- 
Sincerely,

Chris Calloway, Applications Analyst
UNC Renaissance Computing Institute
100 Europa Drive, Suite 540, Chapel Hill, NC 27517
(919) 599-3530

From cbc at unc.edu  Tue May 19 23:38:06 2015
From: cbc at unc.edu (Chris Calloway)
Date: Tue, 19 May 2015 17:38:06 -0400
Subject: [TriPython] PyCruise
Message-ID: <555BAD3E.8020200@unc.edu>

 From Katie Cunningham:

http://www.pycruise.com

-- 
Sincerely,

Chris Calloway, Applications Analyst
UNC Renaissance Computing Institute
100 Europa Drive, Suite 540, Chapel Hill, NC 27517
(919) 599-3530

From brad.crittenden at gmail.com  Wed May 20 01:26:15 2015
From: brad.crittenden at gmail.com (Bradley A. Crittenden)
Date: Tue, 19 May 2015 19:26:15 -0400
Subject: [TriPython] PyCruise
In-Reply-To: <555BAD3E.8020200@unc.edu>
References: <555BAD3E.8020200@unc.edu>
Message-ID: <0E6BB5B2-CA9F-4B3B-9278-6064407C7E1D@gmail.com>


> On May 19, 2015, at 17:38 , Chris Calloway <cbc at unc.edu> wrote:
> 
> From Katie Cunningham:
> 
> http://www.pycruise.com

I was hoping for a more southerly route so they might come to port here.

?bac


From cbc at unc.edu  Wed May 20 16:21:22 2015
From: cbc at unc.edu (Chris Calloway)
Date: Wed, 20 May 2015 10:21:22 -0400
Subject: [TriPython] PyCruise
In-Reply-To: <0E6BB5B2-CA9F-4B3B-9278-6064407C7E1D@gmail.com>
References: <555BAD3E.8020200@unc.edu>
 <0E6BB5B2-CA9F-4B3B-9278-6064407C7E1D@gmail.com>
Message-ID: <555C9862.6010805@unc.edu>

On 5/19/2015 7:26 PM, Bradley A. Crittenden wrote:
> I was hoping for a more southerly route so they might come to port here.

Late June is hot down south. Whereas June in Nova Scotia is some kind of 
beautiful. Spring flowers with puffins and seals.

-- 
Sincerely,

Chris Calloway, Applications Analyst
UNC Renaissance Computing Institute
100 Europa Drive, Suite 540, Chapel Hill, NC 27517
(919) 599-3530

From aikimark at aol.com  Thu May 21 14:50:28 2015
From: aikimark at aol.com (Mark Hutchinson)
Date: Thu, 21 May 2015 08:50:28 -0400
Subject: [TriPython] Nova Scotia
Message-ID: <14d76866322-2406-be9@webstg-a03.mail.aol.com>

Chris


"puffins and seals"
Does that mean this cruise has your seal of approval?


Mark

From cbc at unc.edu  Thu May 21 18:51:32 2015
From: cbc at unc.edu (Chris Calloway)
Date: Thu, 21 May 2015 12:51:32 -0400
Subject: [TriPython] Nova Scotia
In-Reply-To: <14d76866322-2406-be9@webstg-a03.mail.aol.com>
References: <14d76866322-2406-be9@webstg-a03.mail.aol.com>
Message-ID: <555E0D14.8090406@unc.edu>

On 5/21/2015 8:50 AM, Mark Hutchinson via TriZPUG wrote:
> "puffins and seals"
> Does that mean this cruise has your seal of approval?

Not in the least. It could be a complete disaster for all I know. I do 
know the person organizing it, though. And I know she has good 
intentions. People have talked about wanting this for a long time and 
Katie has now been the one to make it happen. I thought it would be the 
right thing to do to pass the information along and let people decide 
for themselves. I think it sounds like fun.

-- 
Sincerely,

Chris Calloway, Applications Analyst
UNC Renaissance Computing Institute
100 Europa Drive, Suite 540, Chapel Hill, NC 27517
(919) 599-3530

From aikimark at aol.com  Thu May 21 19:50:34 2015
From: aikimark at aol.com (Mark Hutchinson)
Date: Thu, 21 May 2015 13:50:34 -0400
Subject: [TriPython] Ex Machina Python code
Message-ID: <14d77992573-2406-277e@webstg-a03.mail.aol.com>

There is a scene in the new movie, Ex Machina, where one of the characters writes some code.  I recognized the language as Python, but it appeared on screen too briefly to understand what it did, if anything.  Now the Python code has been demystified.  Enjoy.


http://www.blastr.com/2015-5-20/ex-machina-buried-insanely-cool-easter-egg-deep-its-source-code-literally


Mark

From ncaidin at gmail.com  Thu May 21 20:07:38 2015
From: ncaidin at gmail.com (Neal Caidin)
Date: Thu, 21 May 2015 14:07:38 -0400
Subject: [TriPython] Ex Machina Python code
In-Reply-To: <14d77992573-2406-277e@webstg-a03.mail.aol.com>
References: <14d77992573-2406-277e@webstg-a03.mail.aol.com>
Message-ID: <CAB3B4A3my+8zmOGKs8SaXT_ocL2oMc57DKSWXBQxMA8XPorVJw@mail.gmail.com>

Cool.

Thanks for sharing.


On Thu, May 21, 2015 at 1:50 PM, Mark Hutchinson via TriZPUG <
trizpug at python.org> wrote:

> There is a scene in the new movie, Ex Machina, where one of the characters
> writes some code.  I recognized the language as Python, but it appeared on
> screen too briefly to understand what it did, if anything.  Now the Python
> code has been demystified.  Enjoy.
>
>
>
> http://www.blastr.com/2015-5-20/ex-machina-buried-insanely-cool-easter-egg-deep-its-source-code-literally
>
>
> Mark
> _______________________________________________
> TriZPUG mailing list
> TriZPUG at python.org
> https://mail.python.org/mailman/listinfo/trizpug
> http://tripython.org is the Triangle Python Users Group
>

From melewis at dayspring.net  Thu May 21 19:40:22 2015
From: melewis at dayspring.net (Morris Lewis)
Date: Thu, 21 May 2015 13:40:22 -0400
Subject: [TriPython] Python Opportunity in the Triangle
Message-ID: <555E1886.9050907@dayspring.net>

What are some good ideas to rapidly develop Python coding skills, doing 
meaningful work for pay in the Triangle Area?

I've been a very prolific programer many years ago (using Ancient 
Languages that many of you will not even recognize), but want to build 
current skills centered around Python and become expert level with it.  
I realize I could "invent" programming assignments and work 
independently, but I would prefer a collaborated project(s) working with 
others, accomplishing solutions to real problems for real customers, and 
being compensated at least modestly for the time invested.  Doesn't need 
to be full time work, but I want something challenging that will drive 
the learning process at the fastest possible rate.  I took a couple of 
online college courses on the language, and I did well.  Ready for the 
next level.

THANKS in advance for any suggestions you might have.

From cbc at unc.edu  Fri May 22 19:16:03 2015
From: cbc at unc.edu (Chris Calloway)
Date: Fri, 22 May 2015 13:16:03 -0400
Subject: [TriPython] PyLadies RDU Intro To Django
Message-ID: <555F6453.1020101@unc.edu>

I just found out about this this morning. I want to make sure you know 
about it as well:

PyLadies RDU will be offering a free four hour workshop on Django at 
Astro Code School in downtown Durham. It will be taught by Caktus Django 
developer Rebecca Conley. She will conduct it on Saturday May 30, 2015 
from 4pm to 8pm. For more information and to RSVP please join the 
Pyladies RDU meetup group:

http://www.meetup.com/pyladies-rdu/
http://www.meetup.com/pyladies-rdu/events/221860790/

-- 
Sincerely,

Chris Calloway, Applications Analyst
UNC Renaissance Computing Institute
100 Europa Drive, Suite 540, Chapel Hill, NC 27517
(919) 599-3530

From adolfo at dainf.ct.utfpr.edu.br  Fri May 22 20:19:01 2015
From: adolfo at dainf.ct.utfpr.edu.br (Adolfo Neto)
Date: Fri, 22 May 2015 15:19:01 -0300
Subject: [TriPython] Python Opportunity in the Triangle
In-Reply-To: <555E1886.9050907@dayspring.net>
References: <555E1886.9050907@dayspring.net>
Message-ID: <CANspyYW=0w-X3sGuzNgnZR77N449LtLb+2WeiQ1GQTDFg1izaQ@mail.gmail.com>

Hi Morris,

Why don't you organize a Coding Dojo
http://codingdojo.org/cgi-bin/index.pl?WhatIsCodingDojo for this?

Adolfo

On Thu, May 21, 2015 at 2:40 PM, Morris Lewis <melewis at dayspring.net> wrote:

> What are some good ideas to rapidly develop Python coding skills, doing
> meaningful work for pay in the Triangle Area?
>
> I've been a very prolific programer many years ago (using Ancient
> Languages that many of you will not even recognize), but want to build
> current skills centered around Python and become expert level with it.  I
> realize I could "invent" programming assignments and work independently,
> but I would prefer a collaborated project(s) working with others,
> accomplishing solutions to real problems for real customers, and being
> compensated at least modestly for the time invested.  Doesn't need to be
> full time work, but I want something challenging that will drive the
> learning process at the fastest possible rate.  I took a couple of online
> college courses on the language, and I did well.  Ready for the next level.
>
> THANKS in advance for any suggestions you might have.
> _______________________________________________
> TriZPUG mailing list
> TriZPUG at python.org
> https://mail.python.org/mailman/listinfo/trizpug
> http://tripython.org is the Triangle Python Users Group
>



-- 

******************************************
Adolfo Neto, PhD
Federal University of Technology, Paran?
Informatics Department
Av. Sete de Setembro, 3165, Rebou?as
Curitiba-PR Brasil 80230-901

http://www.dainf.ct.utfpr.edu.br/~adolfo/e

From cbc at unc.edu  Tue May 26 18:56:07 2015
From: cbc at unc.edu (Chris Calloway)
Date: Tue, 26 May 2015 12:56:07 -0400
Subject: [TriPython] Reminder: TriPython May 2015 Meeting: Deploying Python
 Applications with HTTPD
In-Reply-To: <554A74AC.7000801@unc.edu>
References: <554A74AC.7000801@unc.edu>
Message-ID: <5564A5A7.5030202@unc.edu>

Don't forget we have a meeting on Thursday in Raleigh. I'm really 
looking forward to it. Jeff has been working hard on his presentation:

On 5/6/2015 4:08 PM, Chris Calloway wrote:
> http://tripython.org/Members/sgambino/may-15-mtg/
>
> When: Thursday, May 28, 7pm
> Where: WebAssign, NCSU Centennial Campus
>         1791 Varsity Drive, Suite 200, Raleigh
>
> We are very lucky this month to hear from Jeff Trawick, a 15-year Apache
> committer veteran, who will share his expertise concerning the different
> ways Python applications may be deployed on httpd, the pros and cons of
> the various techniques, and recommendations for how to deploy
> applications generated with common Python web frameworks. Extemporaneous
> "lightning talks" of 5-10 minute duration are also welcome and don't
> need to be pre-announced. Plenty of free after hours parking is
> available in the upper level of the deck behind WebAssign (turn through
> the median just before the intersection of Varsity and Main Campus
> Drives). If the door is locked, call the number posted on the door. An
> after-meeting location for food and beverage will be decided at the
> meeting (usually BaDa Wings for the Thursday night draught specials).

-- 
Sincerely,

Chris Calloway, Applications Analyst
UNC Renaissance Computing Institute
100 Europa Drive, Suite 540, Chapel Hill, NC 27517
(919) 599-3530

From lesliehealray at gmail.com  Thu May 28 18:11:56 2015
From: lesliehealray at gmail.com (Leslie heal ray)
Date: Thu, 28 May 2015 12:11:56 -0400
Subject: [TriPython] PyLadies Intro to Django
Message-ID: <CAKyMesvEHuh9=yk5LOCc924ZwR-q8VYO8WL7YvT2qXKyxobetA@mail.gmail.com>

?Saturday May 30th 4:00 pm PyLadies is doing an Intro to Django Class
taught by Rebecca Conley at the Astro Code School in Durham. About 9 spots
are left and so I thought I would open the invite to this group in case
anyone (male/female) would be interested in joining us. It's a free class.
Join PyLadies meetup and then register for the class.?

Best,
Leslie Ray
PyLadies RDU
Organizer


* <http://www.lesliehealray.com>*

From trawick at gmail.com  Fri May 29 05:15:06 2015
From: trawick at gmail.com (Jeff Trawick)
Date: Thu, 28 May 2015 23:15:06 -0400
Subject: [TriPython] Spiral bound notebook left at meeting tonight
	(WebAssign)
Message-ID: <CAKUrXK7Dv+z1VhjLO0gSb-ZWvHM1zibmvXAZctaOstr0z9fknQ@mail.gmail.com>

The notebook has "Good Day Sun Shine" on the cover.

Please contact me to have it returned.

-- 
Born in Roswell... married an alien...
http://emptyhammock.com/

From livalencia at my.waketech.edu  Fri May 29 05:08:58 2015
From: livalencia at my.waketech.edu (Luis I. Valencia)
Date: Thu, 28 May 2015 23:08:58 -0400
Subject: [TriPython] PyLadies Intro to Django
Message-ID: <6pvku7i0pyjm9luojqyf8loc.1432868937409@email.android.com>

Oh. Awesome so non females are allowed to attend? I always thought it was strictly for the ladies.


Please excuse the typos....sent via the Samsung Galaxy S? III, an AT&T 4G LTE smartphone

<div>-------- Original message --------</div><div>From: Leslie heal ray <lesliehealray at gmail.com> </div><div>Date:05/28/2015  12:11 PM  (GMT-05:00) </div><div>To: trizpug at python.org </div><div>Subject: [TriPython] PyLadies Intro to Django </div><div>
</div>?Saturday May 30th 4:00 pm PyLadies is doing an Intro to Django Class
taught by Rebecca Conley at the Astro Code School in Durham. About 9 spots
are left and so I thought I would open the invite to this group in case
anyone (male/female) would be interested in joining us. It's a free class.
Join PyLadies meetup and then register for the class.?

Best,
Leslie Ray
PyLadies RDU
Organizer


* <http://www.lesliehealray.com>*
_______________________________________________
TriZPUG mailing list
TriZPUG at python.org
https://mail.python.org/mailman/listinfo/trizpug
http://tripython.org is the Triangle Python Users Group

From willspearman at gmail.com  Fri May 29 21:30:16 2015
From: willspearman at gmail.com (Will Spearman)
Date: Fri, 29 May 2015 19:30:16 +0000
Subject: [TriPython] Time Series Matching
Message-ID: <CAPbmUL4B2MeMv5ZpMzAWW7ATnjHMm+8iNLahOj=w3pDETsFMcA@mail.gmail.com>

Python experts,

I am working on a library that handles time series data. For most
calculation operations I am using pandas.

I need to add a feature where I have as input two time series and I need to
return only samples that have a corresponding time bucket match in the
opposite set. I want to match up samples that are "close" to each other but
may not actually have the same timestamp since my timestamps are in
milliseconds and from different sources. For example:

Set 1 sampled at intervals of 5:

1 time 05
2 time 10
3 time 30
4 time 39

Set 2 samples at intervals of 5:

5 time 04
6 time 20
7 time 34
8 time 40
9 time 45

The result would be that 2, 6 and 9 would be eliminated.

This feels like a problem that would have already been solved very
efficiently, but I am not sure what to even search for in a solution. Any
suggestions?

From cbc at unc.edu  Fri May 29 21:53:13 2015
From: cbc at unc.edu (Chris Calloway)
Date: Fri, 29 May 2015 15:53:13 -0400
Subject: [TriPython] Time Series Matching
In-Reply-To: <CAPbmUL4B2MeMv5ZpMzAWW7ATnjHMm+8iNLahOj=w3pDETsFMcA@mail.gmail.com>
References: <CAPbmUL4B2MeMv5ZpMzAWW7ATnjHMm+8iNLahOj=w3pDETsFMcA@mail.gmail.com>
Message-ID: <5568C3A9.3090304@unc.edu>

On 5/29/2015 3:30 PM, Will Spearman wrote:
> I want to match up samples that are "close" to each other but
> may not actually have the same timestamp since my timestamps are in
> milliseconds and from different sources. For example:

The standard datetime module has a timedelta class. It is addable and 
subtractable from instances of the datetime class to make new datatime 
instances. Furthermore, datatime instances are comparable, so you can 
tell if a datetime instance is greater or less than another. Even 
further, a time series is sorted in time order, so there are a limited 
number of comparisons to perform between two time series. Seems plug and 
chug from there.

The calculation time would be dependent on the length of the series, but 
then all Pandas calculations are. The important thing is that because 
the series are already sorted, the calculation time is not exponentially 
exponentially dependent on the length of the series.

-- 
Sincerely,

Chris Calloway, Applications Analyst
UNC Renaissance Computing Institute
100 Europa Drive, Suite 540, Chapel Hill, NC 27517
(919) 599-3530

From cbc at unc.edu  Fri May 29 22:48:55 2015
From: cbc at unc.edu (Chris Calloway)
Date: Fri, 29 May 2015 16:48:55 -0400
Subject: [TriPython] Time Series Matching
In-Reply-To: <5568C3A9.3090304@unc.edu>
References: <CAPbmUL4B2MeMv5ZpMzAWW7ATnjHMm+8iNLahOj=w3pDETsFMcA@mail.gmail.com>
 <5568C3A9.3090304@unc.edu>
Message-ID: <5568D0B7.5030209@unc.edu>

On 5/29/2015 3:53 PM, Chris Calloway wrote:
> On 5/29/2015 3:30 PM, Will Spearman wrote:
>> I want to match up samples that are "close" to each other but
>> may not actually have the same timestamp since my timestamps are in
>> milliseconds and from different sources. For example:
>
> The standard datetime module has a timedelta class. It is addable and
> subtractable from instances of the datetime class to make new datatime
> instances. Furthermore, datatime instances are comparable, so you can
> tell if a datetime instance is greater or less than another. Even
> further, a time series is sorted in time order, so there are a limited
> number of comparisons to perform between two time series. Seems plug and
> chug from there.
>
> The calculation time would be dependent on the length of the series, but
> then all Pandas calculations are. The important thing is that because
> the series are already sorted, the calculation time is not exponentially
> exponentially dependent on the length of the series.

And doing due diligence, more recent Pandas has a new TimeDelta object 
that inherits from datatime.timedelta, is compatible with Pandas 
datetime64 objects, has the same arithmetic properties, and is able to 
form indices similar to a Pandas DataOffset:

http://pandas.pydata.org/pandas-docs/stable/timedeltas.html

-- 
Sincerely,

Chris Calloway, Applications Analyst
UNC Renaissance Computing Institute
100 Europa Drive, Suite 540, Chapel Hill, NC 27517
(919) 599-3530

From willspearman at gmail.com  Fri May 29 23:18:07 2015
From: willspearman at gmail.com (Will Spearman)
Date: Fri, 29 May 2015 21:18:07 +0000
Subject: [TriPython] Time Series Matching
In-Reply-To: <5568D0B7.5030209@unc.edu>
References: <CAPbmUL4B2MeMv5ZpMzAWW7ATnjHMm+8iNLahOj=w3pDETsFMcA@mail.gmail.com>
 <5568C3A9.3090304@unc.edu> <5568D0B7.5030209@unc.edu>
Message-ID: <CAPbmUL4NE61+621dTS=SVKxv3tJfcCTrHEPSyaCK7v4OWU0S+g@mail.gmail.com>

Comparing the time stamps is not an issue. In my case they are just
millisecond timestamp integers, so comparison is easy. I have already
written an algorithm in pure Python that is not very efficient, but I was
hoping for something existing that is closer to constant time with bucket
hashing before I try to implement it myself.

On Fri, May 29, 2015 at 4:41 PM Chris Calloway <cbc at unc.edu> wrote:

> On 5/29/2015 3:53 PM, Chris Calloway wrote:
> > On 5/29/2015 3:30 PM, Will Spearman wrote:
> >> I want to match up samples that are "close" to each other but
> >> may not actually have the same timestamp since my timestamps are in
> >> milliseconds and from different sources. For example:
> >
> > The standard datetime module has a timedelta class. It is addable and
> > subtractable from instances of the datetime class to make new datatime
> > instances. Furthermore, datatime instances are comparable, so you can
> > tell if a datetime instance is greater or less than another. Even
> > further, a time series is sorted in time order, so there are a limited
> > number of comparisons to perform between two time series. Seems plug and
> > chug from there.
> >
> > The calculation time would be dependent on the length of the series, but
> > then all Pandas calculations are. The important thing is that because
> > the series are already sorted, the calculation time is not exponentially
> > exponentially dependent on the length of the series.
>
> And doing due diligence, more recent Pandas has a new TimeDelta object
> that inherits from datatime.timedelta, is compatible with Pandas
> datetime64 objects, has the same arithmetic properties, and is able to
> form indices similar to a Pandas DataOffset:
>
> http://pandas.pydata.org/pandas-docs/stable/timedeltas.html
>
> --
> Sincerely,
>
> Chris Calloway, Applications Analyst
> UNC Renaissance Computing Institute
> 100 Europa Drive, Suite 540, Chapel Hill, NC 27517
> (919) 599-3530
> _______________________________________________
> TriZPUG mailing list
> TriZPUG at python.org
> https://mail.python.org/mailman/listinfo/trizpug
> http://tripython.org is the Triangle Python Users Group
>

From cbc at unc.edu  Sat May 30 00:03:27 2015
From: cbc at unc.edu (Chris Calloway)
Date: Fri, 29 May 2015 18:03:27 -0400
Subject: [TriPython] Time Series Matching
In-Reply-To: <CAPbmUL4NE61+621dTS=SVKxv3tJfcCTrHEPSyaCK7v4OWU0S+g@mail.gmail.com>
References: <CAPbmUL4B2MeMv5ZpMzAWW7ATnjHMm+8iNLahOj=w3pDETsFMcA@mail.gmail.com>
 <5568C3A9.3090304@unc.edu> <5568D0B7.5030209@unc.edu>
 <CAPbmUL4NE61+621dTS=SVKxv3tJfcCTrHEPSyaCK7v4OWU0S+g@mail.gmail.com>
Message-ID: <5568E22F.4070706@unc.edu>

On 5/29/2015 5:18 PM, Will Spearman wrote:
> Comparing the time stamps is not an issue. In my case they are just
> millisecond timestamp integers, so comparison is easy. I have already
> written an algorithm in pure Python that is not very efficient, but I was
> hoping for something existing that is closer to constant time with bucket
> hashing before I try to implement it myself.

If the problem is that this is a hot spot, take advantage of the fact 
that a Pandas Series objects are backed with numpy arrays which are a C 
structs. Then use Cython to do something fast.

I'm sure there's something existing, because this sounds like a common 
time series problem (and Pandas is kind of weak on irregularly gridded 
data as a series). But you may need to cast a wider net than TriPython 
to find it. Pandas list?

-- 
Sincerely,

Chris Calloway, Applications Analyst
UNC Renaissance Computing Institute
100 Europa Drive, Suite 540, Chapel Hill, NC 27517
(919) 599-3530

From casey.goodlett at kitware.com  Fri May 29 23:59:55 2015
From: casey.goodlett at kitware.com (Casey Goodlett)
Date: Fri, 29 May 2015 17:59:55 -0400
Subject: [TriPython] Time Series Matching
In-Reply-To: <CAPbmUL4NE61+621dTS=SVKxv3tJfcCTrHEPSyaCK7v4OWU0S+g@mail.gmail.com>
References: <CAPbmUL4B2MeMv5ZpMzAWW7ATnjHMm+8iNLahOj=w3pDETsFMcA@mail.gmail.com>
 <5568C3A9.3090304@unc.edu> <5568D0B7.5030209@unc.edu>
 <CAPbmUL4NE61+621dTS=SVKxv3tJfcCTrHEPSyaCK7v4OWU0S+g@mail.gmail.com>
Message-ID: <CAOqyOuGqR7LvwF4D5Y4dtCaUqO-NmH8cr+AmqpOyaTtw9nTf1w@mail.gmail.com>

Will,

If you can treat your data as continuous you might also consider fitting a
model and then resampling at a new set of timepoints.  I've done this using
scipy
http://docs.scipy.org/doc/scipy/reference/generated/scipy.interpolate.interp1d.html#scipy.interpolate.interp1d
,
but I imagine there is a pandas equivalent.

-- 
Casey

From cbc at unc.edu  Sat May 30 04:32:22 2015
From: cbc at unc.edu (Chris Calloway)
Date: Fri, 29 May 2015 22:32:22 -0400
Subject: [TriPython] Time Series Matching
In-Reply-To: <CAOqyOuGqR7LvwF4D5Y4dtCaUqO-NmH8cr+AmqpOyaTtw9nTf1w@mail.gmail.com>
References: <CAPbmUL4B2MeMv5ZpMzAWW7ATnjHMm+8iNLahOj=w3pDETsFMcA@mail.gmail.com>
 <5568C3A9.3090304@unc.edu> <5568D0B7.5030209@unc.edu>
 <CAPbmUL4NE61+621dTS=SVKxv3tJfcCTrHEPSyaCK7v4OWU0S+g@mail.gmail.com>
 <CAOqyOuGqR7LvwF4D5Y4dtCaUqO-NmH8cr+AmqpOyaTtw9nTf1w@mail.gmail.com>
Message-ID: <55692136.90006@unc.edu>

On 5/29/2015 5:59 PM, Casey Goodlett wrote:
> If you can treat your data as continuous you might also consider fitting a
> model and then resampling at a new set of timepoints.  I've done this using
> scipy
> http://docs.scipy.org/doc/scipy/reference/generated/scipy.interpolate.interp1d.html#scipy.interpolate.interp1d
> ,
> but I imagine there is a pandas equivalent.

http://pandas.pydata.org/pandas-docs/stable/timeseries.html#timeseries-resampling
http://pandas.pydata.org/pandas-docs/stable/cookbook.html#resampling
http://pandas.pydata.org/pandas-docs/stable/missing_data.html#interpolation

All these methods depend on have regularly periodic data.

-- 
Sincerely,

Chris Calloway, Applications Analyst
UNC Renaissance Computing Institute
100 Europa Drive, Suite 540, Chapel Hill, NC 27517
(919) 599-3530

From kgrandis at gmail.com  Sat May 30 04:57:34 2015
From: kgrandis at gmail.com (Kurt Grandis)
Date: Fri, 29 May 2015 22:57:34 -0400
Subject: [TriPython] Time Series Matching
Message-ID: <CAEbsGXsXUf0VZc517b1Lkdf2au4Njd7UGMGSeOk=3bH0qE9caw@mail.gmail.com>

I'm not quite sure I follow the criteria for sameness or elimination
between the time series. Are each series independent sensor readings for
the same environment?

"Close" could mean a lot of things depending on how you're looking at the
data--what dimensions or time frames you're considering. Do you have an
idea of what the variance about each reading might be? Something so you can
model "closeness" around each point.

It sounds like you might want to explore transforming these readings into a
continuous representation maybe using the above distribution model about
each event. You can play with things like convolving the signals or using
something like lowpass filters to trim extraneous readings.

If you're looking to align the signals you can look into something like
cross-correlation. It sounds like another approach depending on how many
errant events there are is find the max cross correlation and remove the
timestamps without partners; repeat.

Not sure of the nature of the data you're dealing with, but hope something
above helps.