On Sat, Feb 12, 2011 at 11:57 AM, Tal Galili <tal.gal...@gmail.com> wrote: > Hi all, > I'm not sure who to ask this, so I'm posting this here. > > I just ran: > Â require(KernSmooth) > And got (I bolded the text): > Loading required package: KernSmooth > KernSmooth 2.23 loaded > *Copyright M. P. Wand 1997-2009* > Warning message: > package 'KernSmooth' was built under R version 2.12.1 > > What does that mean?
There are many licenses used on CRAN, such as BSD, MIT, GPL, LGPL, and public domain. There are even some that aren't really open source at all such as 'akima' and 'SparseM'. These packages make additional restrictions such as that a license is only granted for academic / non-commercial use. It's particularly annoying that many other packages without such restrictions depend on these packages, making it pretty difficult to ensure license compliance for companies using R. The fact that the code is Copyright by that author is somewhat orthogonal to the license he chooses to distribute it under. See the LICENSE file. In this case, it's much more open than GPL -- it is completely unrestricted / public domain. After reading the license for the package you are interested in, you may like to read how those licenses are interpreted by e.g. http://www.opensource.org/licenses/index.html - Murray ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
