True, I didn't pay much attention to licencing. In light of it though, here are a couple more links to a couple of gentlemen who may be worth grovelling to should the need arise. No specific licencing is mentioned. <http://mahi.ucsd.edu/parker/Software/> The documentation says the contouring code was written by this guy who is the director of the SETI@home project: <http://setiweb.ssl.berkeley.edu/~davea/resume.html> regards, Gary *********** REPLY SEPARATOR *********** On 28/10/2004 at 09:25 John Hunter wrote: > >>>>> "gary" == gary ruben <gr...@bi...> writes: > > gary> Some more possible contour generating code links: > > [1] http://www.geog.uni-hannover.de/grass/ > [2] http://www.triplexware.huckfinn.de/geogfix.html > [3] http://www.triplexware.huckfinn.de/contweber.html > [4] http://astronomy.swin.edu.au/~pbourke/projection/conrec/ > [5] http://members.bellatlantic.net/~vze2vrva/ > > Hi Gary, thanks for the tips. Note that [1] appears to be GPLd and > we're looking for a routine with licenses as permissive as the > PSF/matplotlib license. I believe [2] and [4] are both pointing to > the same algorithm, by Paul Bourke - this one has a C++ implementation > that includes the following license restriction > > Additionally, the authors grant permission to modify this software > and its documentation for any purpose, provided that such > modifications are not distributed without the explicit consent of > the authors and that existing copyright notices are retained in all > copies. Some of the algorithms implemented by this software are > patented, observe all applicable patent law. > > Since this code implements the Bourke algorithm, I assume the other > implementations have the same patent restrictions, but I haven't taken > a close look. > > [3] is released under the MPL - > http://www.mozilla.org/MPL/MPL-1.1.html, which as I understand has a > complex licensing history - it certainly takes a lawyer to read > through it - I'm not sure what the status is. > > [5] is certainly as possibility, if as you say, we contact the author > and see if he is willing to release it to us. > > Hopefully, all of this is moot, as I understand that STSci has been > working on a routine ripped from gist and Perry says they are close to > having a prototype. I still think it's worthwhile investigating > whether marching squares is patented or enforceable - Mr Horton's > response was not terribly enlightening. > > JDH > > > ------------------------------------------------------- > This SF.Net email is sponsored by: > Sybase ASE Linux Express Edition - download now for FREE > LinuxWorld Reader's Choice Award Winner for best database on Linux. > http://ads.osdn.com/?ad_id=5588&alloc_id=12065&op=click > _______________________________________________ > Matplotlib-devel mailing list > Mat...@li... > https://lists.sourceforge.net/lists/listinfo/matplotlib-devel ------------------------------------ Gary Ruben gr...@bi... <http://users.bigpond.net.au/gazzar>