R licence

Duncan,

Letting you know then that I just don't see how the first paragraph here :

http://www.revolutionanalytics.com/downloads/gpl-sources.php

is compatible with clause 2(b) here :

http://www.gnu.org/licenses/gpl-2.0.html

Perhaps somebody could explain why it is?

Matthew


"Duncan Murdoch" <murdoch.duncan at gmail.com> wrote in message
news:4D9DA9FF.9020103 at gmail.com...

On 07/04/2011 7:47 AM, Matthew Dowle wrote:

Peter,

If the proprietary part of REvolution's product is ok, then surely
Stanislav's suggestion is too. No?

Revolution has said that they believe they follow the GPL, and they
haven't been challenged on that. ? If you think that they don't, you could
let an R copyright holder know what they're doing that's a license
violation.

My opinion of Stanislav's question is that he doesn't give enough
information to answer. ?If he is planning to distribute R as part of his
product, he needs to follow the GPL. ?If not, I don't think any R
copyright holder has anything to complain about.

Duncan Murdoch

Matthew


"peter dalgaard"<PDalgd at gmail.com> ?wrote in message
news:BE157CF5-9B4B-45A0-A7D4-363B774F114A at gmail.com...

?On Apr 7, 2011, at 09:45 , Stanislav Bek wrote:

?Hi,

?is it possible to use some statistic computing by R in proprietary
?software?
?Our software is written in c#, and we intend to use
?http://rdotnet.codeplex.com/
?to get R work there. Especially we want to use loess function.

?You need to take legal advice to be certain, but offhand I would say
that
?this kind of circumvention of the GPL is _not_ allowed.

?It all depends on whether the end product is a "derivative work", in
which
?case, the whole must be distributed under a GPL-compatible licence.
The
?situation around GPL-incompatible plug-ins or plug-ins interfacing to
R in
?GPL -incompatible software is legally murky, but using R as a
subroutine
?library for proprietary code is clearly crossing the line, as far as I
can
?tell.

?--
?Peter Dalgaard
?Center for Statistics, Copenhagen Business School
?Solbjerg Plads 3, 2000 Frederiksberg, Denmark
?Phone: (+45)38153501
?Email: pd.mes at cbs.dk ?Priv: PDalgd at gmail.com