[AstroPy] ESA Summer of Code in Space 2013

Thøger Rivera-Thorsen thoger.emil@gmail....
Tue Jun 18 13:39:55 CDT 2013


I have been working on a fitting GUI for a while, although it is made 
with a specific task in mind.
However, it is not based on Matplotlib but on Traits/Traitsui/Chaco and 
Pandas. It is made for a specific projhect I'm working and as such not 
yet usable for more general cases, but it could be a starting point, if 
the dependencies don't conflict with astropy politics.

Especially, I am happy about the choice of Pandas for managing a quite 
complex data structure (the fitted and/or guessed values of an arbitrary 
number of transitions for an arbitrary number of rows or collapsed rows 
of a spatially resolved spectrum) of a), but also with the Traits-based 
interactive interface to build complex line profiles from single 
gaussians, good for fitting-by-eye and giving good initial guesses for 
fitting of complex line profiles. It hooks directly up to a wrapper I've 
made for lmfit, but given the modularity, it should be relatively easy 
to change to other backends.

It's still a work-in-progress, but there are some screenshots here: 
http://flic.kr/s/aHsjGaEMGg .
I know the choice and number of dependencies may be prohibitive but it 
saved a lot of work on the GUI, and Pandas means the difference between 
sanity and madness when it comes to keeping track of so many parameters.

Cheers,
Emil


On 2013-06-18 20:01, Wolfgang Kerzendorf wrote:
> Hi Jonathan,
>
> I think that's a fantastic idea! Are you raising your hand to put the 
> application in ? I'm happy to help with some of the sections. Maybe 
> Kelle is interested as well to join this effort. The workload divided 
> by three might be worth it.
>
> What do you guys think?
>
> Cheers
>     Wolfgang
> On 2013-06-18, at 1:54 PM, "Slavin, Jonathan" <jslavin@cfa.harvard.edu 
> <mailto:jslavin@cfa.harvard.edu>> wrote:
>
>> Hi all,
>>
>> Tom's post reminded me of what I was thinking after Kelle's post 
>> earlier today: a really good project for someone would be to create a 
>> matplotlib-based spectral line fitting package.  Maybe this ESA 
>> opportunity would work for that.  Like many others I have my own 
>> routines that I've written to do this, but they are neither general 
>> enough nor user-friendly enough to be widely usable.  I think that a 
>> focused effort on this could produce something that would be very 
>> helpful to many people.  The requirements would be (just off the top 
>> of my head):
>> - gui interface, for example for placement of line centers
>> - general methods for inputting data (fits, hdf5, ascii table)
>> - robust fitting routines that return error bars on fitted parameters
>> - a range of possible line shape functions (e.g. gaussian, lorentz, 
>> etc.) and continuum fitting
>> - able to deal with both emission and absorption lines
>>
>> I hope someone out there is interested in doing something like that.
>>
>> Jon
>>
>> ________________________________________________________
>> Jonathan D. Slavin Harvard-Smithsonian CfA
>> jslavin@cfa.harvard.edu <mailto:jslavin@cfa.harvard.edu> 60 Garden 
>> Street, MS 83
>> phone: (617) 496-7981       Cambridge, MA 02138-1516
>> fax: (617) 496-7577            USA
>> ________________________________________________________
>>
>>
>>
>> On Tue, Jun 18, 2013 at 1:00 PM, <astropy-request@scipy.org 
>> <mailto:astropy-request@scipy.org>> wrote:
>>
>>     Date: Tue, 18 Jun 2013 18:15:55 +0200
>>     From: Thomas Robitaille <thomas.robitaille@gmail.com
>>     <mailto:thomas.robitaille@gmail.com>>
>>     Subject: [AstroPy] ESA Summer of Code in Space 2013
>>     To: astropy mailing list <astropy@scipy.org
>>     <mailto:astropy@scipy.org>>,   astropy-dev mailing
>>             list <astropy-dev@googlegroups.com
>>     <mailto:astropy-dev@googlegroups.com>>
>>     Message-ID:
>>            
>>     <CAGMHX_3b6NfY-L-OHhZqjcNFSARf3K0EMOjE0u1QWnb4nYX_+Q@mail.gmail.com
>>     <mailto:CAGMHX_3b6NfY-L-OHhZqjcNFSARf3K0EMOjE0u1QWnb4nYX_%2BQ@mail.gmail.com>>
>>     Content-Type: text/plain; charset=ISO-8859-1
>>
>>     Hi everyone,
>>
>>     The deadline for mentoring organizations for the ESA Summer of
>>     Code in
>>     Space (SOCIS) 2013 is this coming Thursday.
>>
>>     http://sophia.estec.esa.int/socis2013/
>>
>>     Since we were successful with the Google Summer of Code, the Astropy
>>     project will not be participating as a whole, but if you are leading
>>     the development of a Python package for astronomy, and are interested
>>     in having a student work on your project, you should consider
>>     applying! As part of this program, students are paid 4000 euros.
>>
>>     Cheers,
>>     Tom
>>
>>
>>     ------------------------------
>>
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