On 5/13/2008 7:46 AM, Serge Merzliakov wrote:
This is exactly what I would like to do. There would be some text editor
type functionality which would then be run through R and the outpur
displayed.
In your original post, you asked for feedback from the core development
team. But what you really need is feedback from a lawyer who
understands copyright and the GPL.
I would assume that some copyright holder will aggressively enforce the
GPL. It is not enough for one or two copyright holders to tell you to
go ahead, you have to have agreement from all of them if you are
violating the GPL. The copyright in R is held quite widely, so I would
guess it is not practical to get that sort of permission. Similarly, I
don't think it would be practical to get permission from a subset of the
copyright holders and rewrite the parts you don't have permission to use.
On the other hand, if what you are doing falls within the GPL, then you
already have permission to do it.
The core development team does not know about subtleties of copyright
law so it is not in a position to tell you whether what you want to do
is GPL compatible or not. If you're not sure that what you are doing is
legal, ask a lawyer, don't ask us.
Duncan Murdoch
Gavin Simpson wrote:
I am not a lawyer, but at important distinction here is what one means
by "linked". You're not linking against R if you just run some R code
through it and capture the output for example. This is how Brodgar, for
example, does what Serge wants to achieve --- see their statement on R,
Brodgar and the GPL:
www.brodgar.com
http://www.brodgar.com/brodgar.htm#2.%20Brodgar%20and%20R
Whilst, from a personal point of view agree with Michael's statement
about producing an open source app and then sell support, we all don;t
have to follow that moral.
G
On Tue, 2008-05-13 at 02:05 -0700, Michael Lawrence wrote:
Well, there's a big question as to whether non-GPL can link to GPL code.
It's never been really tested in court. If I were you, I'd just make it
open-source and sell your support for it.
On Sun, May 11, 2008 at 5:19 AM, Serge Merzliakov <[EMAIL PROTECTED]>
wrote:
All,
I am interested in devloping a commercial java-based (why the language is
important is discussed later) GUI for R. The app would allow the GUI to edit
R commands and the results displayed in varios means. I have investigated
various java based libraries to invoke R and they follow the apache license
model (friendlier to commercial software developers). I understand the that
R is released under the GPL license, which I have a reasonable understanding
of. SO my question is simple, Can I develop a a commerical GUI for R (which
would require R to be isntalled separately on the machine) without having to
also release my source code ?
I am hoping that some of core R development team see this and can provide
useful feedback.
Regards,
Serge
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