From y.copin at ipnl.in2p3.fr Mon Jul 16 09:13:09 2007 From: y.copin at ipnl.in2p3.fr (Yannick Copin) Date: Mon, 16 Jul 2007 15:13:09 +0200 Subject: [AstroPy] Porting "IDL Astronomy User's Library" to numpy Message-ID: <469B6EE5.2050908@ipnl.in2p3.fr> Hi, I'd be interested in some astronomical utilities from the IDL Astronomy User's Library (http://idlastro.gsfc.nasa.gov/contents.html) converted to python/numpy. I had a look to idl2python (http://software.pseudogreen.org/i2py/), but the automatic translation fails, mostly because (I think) the conversion is Numeric-oriented, and because of the intrinsic differences in the function argument management between IDL and python. So, before pursuing in this direction, I'd like to know if this exercice has already been done, at least partially. Cheers. -- .~. Yannick COPIN (o:>* Doctus cum libro /V\ Institut de physique nucleaire de Lyon (IN2P3 - France) // \\ Tel: (33/0) 472 431 968 AIM: YnCopin ICQ: 236931013 /( )\ http://snovae.in2p3.fr/ycopin/ ^`~'^ From perry at stsci.edu Mon Jul 16 12:03:46 2007 From: perry at stsci.edu (Perry Greenfield) Date: Mon, 16 Jul 2007 12:03:46 -0400 Subject: [AstroPy] Porting "IDL Astronomy User's Library" to numpy In-Reply-To: <469B6EE5.2050908@ipnl.in2p3.fr> References: <469B6EE5.2050908@ipnl.in2p3.fr> Message-ID: <1F2751F6-60DF-4306-B254-D3814F1EF885@stsci.edu> On Jul 16, 2007, at 9:13 AM, Yannick Copin wrote: > Hi, > > I'd be interested in some astronomical utilities from the IDL > Astronomy User's > Library (http://idlastro.gsfc.nasa.gov/contents.html) converted to > python/numpy. I had a look to idl2python > (http://software.pseudogreen.org/i2py/), but the automatic > translation fails, > mostly because (I think) the conversion is Numeric-oriented, and > because of > the intrinsic differences in the function argument management > between IDL and > python. > > So, before pursuing in this direction, I'd like to know if this > exercice has > already been done, at least partially. > We have the idea of doing it, but not in a very literal sense (translating idl routines to Python counterparts). There has been some work in this area on our part, but because of budget pressures, much less over the last 2 years than hoped (things are looking better now, but it may be some months before activity picks up on this front again). Work so far on our part has centered on: Coordinate transformation utilities Synthetic photometry So if you are interested in doing more literal translations, please feel free to go right ahead. There is even a place to put such stuff: http://www.scipy.org/AstroLib Perry From William.T.Bridgman.1 at gsfc.nasa.gov Mon Jul 16 13:19:05 2007 From: William.T.Bridgman.1 at gsfc.nasa.gov (W.T. Bridgman) Date: Mon, 16 Jul 2007 13:19:05 -0400 Subject: [AstroPy] Porting "IDL Astronomy User's Library" to numpy In-Reply-To: <1F2751F6-60DF-4306-B254-D3814F1EF885@stsci.edu> References: <469B6EE5.2050908@ipnl.in2p3.fr> <1F2751F6-60DF-4306-B254-D3814F1EF885@stsci.edu> Message-ID: <9DF78AC3-C057-489D-84FB-393371DAAC6A@gsfc.nasa.gov> Perry, I believe some of those documents are getting a bit dated. They still refer to only supporting numarray vs Numeric. Don't those need to be updated to specify numpy? Newcomers to the list might be confused if not familiar with the history, especially considering the numpy begat numeric begat numarray begat numpy timeline. Tom On Jul 16, 2007, at 12:03 PM, Perry Greenfield wrote: > > On Jul 16, 2007, at 9:13 AM, Yannick Copin wrote: > >> Hi, >> >> I'd be interested in some astronomical utilities from the IDL >> Astronomy User's >> Library (http://idlastro.gsfc.nasa.gov/contents.html) converted to >> python/numpy. I had a look to idl2python >> (http://software.pseudogreen.org/i2py/), but the automatic >> translation fails, >> mostly because (I think) the conversion is Numeric-oriented, and >> because of >> the intrinsic differences in the function argument management >> between IDL and >> python. >> >> So, before pursuing in this direction, I'd like to know if this >> exercice has >> already been done, at least partially. >> > We have the idea of doing it, but not in a very literal sense > (translating idl routines to Python counterparts). There has been > some work in this area on our part, but because of budget pressures, > much less over the last 2 years than hoped (things are looking better > now, but it may be some months before activity picks up on this front > again). > > Work so far on our part has centered on: > > Coordinate transformation utilities > Synthetic photometry > > So if you are interested in doing more literal translations, please > feel free to go right ahead. There is even a place to put such stuff: > http://www.scipy.org/AstroLib > > Perry > _______________________________________________ > AstroPy mailing list > AstroPy at scipy.org > http://lists.astropy.scipy.org/mailman/listinfo/astropy > -- Dr. William T."Tom" Bridgman Scientific Visualization Studio Global Science & Technology, Inc. NASA/Goddard Space Flight Center Email: William.T.Bridgman.1 at gsfc.nasa.gov Code 610.3 Phone: 301-286-1346 Greenbelt, MD 20771 FAX: 301-286-1634 http://svs.gsfc.nasa.gov/ From perry at stsci.edu Mon Jul 16 13:25:22 2007 From: perry at stsci.edu (Perry Greenfield) Date: Mon, 16 Jul 2007 13:25:22 -0400 Subject: [AstroPy] Porting "IDL Astronomy User's Library" to numpy In-Reply-To: <9DF78AC3-C057-489D-84FB-393371DAAC6A@gsfc.nasa.gov> References: <469B6EE5.2050908@ipnl.in2p3.fr> <1F2751F6-60DF-4306-B254-D3814F1EF885@stsci.edu> <9DF78AC3-C057-489D-84FB-393371DAAC6A@gsfc.nasa.gov> Message-ID: On Jul 16, 2007, at 1:19 PM, W.T. Bridgman wrote: > Perry, > > I believe some of those documents are getting a bit dated. They > still refer to only supporting numarray vs Numeric. Don't those need > to be updated to specify numpy? > Yes, that's certainly true. Having said that, it's probably going to be a month or two before I can get to updating them (hopefully I can find a couple hours before then). I'll see if I can find someone else to do that sooner. > Newcomers to the list might be confused if not familiar with the > history, especially considering the numpy begat numeric begat > numarray begat numpy timeline. > > Tom > From chanley at stsci.edu Mon Jul 23 15:14:52 2007 From: chanley at stsci.edu (Christopher Hanley) Date: Mon, 23 Jul 2007 15:14:52 -0400 Subject: [AstroPy] SciPy 2007 conference BOF Message-ID: <46A4FE2C.4040004@stsci.edu> Greetings, I have a question for those planning on attending the SciPy 2007 conference in a few weeks. I have been approached regarding the possibility about having a BOF meeting to discuss PyFITS. I was wondering if there would be an interest in this, or more generally, about astronomy software development. We at the Space Telescope Science Institute could talk about our future plans. Please let me know if you are interested in having a BOF meeting. If there is enough interest I will arrange a session for Thursday evening. Cheers, Chris Hanley -- Christopher Hanley Systems Software Engineer Space Telescope Science Institute 3700 San Martin Drive Baltimore MD, 21218 (410) 338-4338 From chanley at stsci.edu Mon Jul 23 21:24:11 2007 From: chanley at stsci.edu (Christopher Hanley) Date: Mon, 23 Jul 2007 21:24:11 -0400 Subject: [AstroPy] Astronomy / PyFITS BOF at SciPy Message-ID: <46A554BB.6090908@stsci.edu> Hi, It looks like we have more than enough interest for an astronomy BOF Thursday evening after dinner. I look forward to seeing everyone. Cheers, Chris