Alexandre,

What numerical techniques are important to you?  How large are the typical data 
sets, grids, etc?  I do a lot of processing on 500,000 sample signals, so 
Smalltalk is out for most of that number crunching (FFT, DWT, norms, etc.) and 
visualization.  So far, I could probably get away with Smalltalk curve fitting, 
but that won't always be the case.  One option would be to tell NR and GSL 
"thanks but no thanks" and find or start an MIT numerics library.  In my mind, 
it should be C-callable C++; the trick to that is proper use of extern "C".

Just to make it clear, I have large parts of GSL mapped into Pharo.  My concern 
now is how to release that w/o being adversely affected by GPL; help with 
understanding "GPL compatible licenses" would be appreciated.  Like I said, I 
don't care what anyone else does with the code, but I won't have years of my 
work rendered useless to me for commercial interests.  Nothing in GSL is worth 
taking that risk.  There should not be any problem releasing the function 
definitions; the question is over how much, if any, of the wrappers I can 
release w/o losing it all to GPL.

Bill


________________________________________
From: [email protected] 
[[email protected]] On Behalf Of Alexandre Bergel 
[[email protected]]
Sent: Friday, November 05, 2010 7:24 AM
To: [email protected]
Subject: Re: [Pharo-project] Pharo and Astronomy?

Thanks Bill. I am at the stage of convincing Astronomers to use Pharo to do 
their soft, but this is not easy

Cheers,
Alexandre


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