Re: [Fwd: RE: [OSGeo-Discuss] GDAL and ESRI]
[...] HI Ravi, There is a nice term describing how GPL works - viral effect. If you touch GPL you will be GPeLd to GPL yourself. Unlike the flue ... there is not cure (-; Best regards: RAf I suggest to not use the term viral effect but rather call it a vaccine. Viral effect reeks of FUD intended to make .us look like bacilli. Vaccine is more appropriate because people generally consciously choose to get it knowing perfectly well what they are doing. Viruses instead are nasty and jump on you without politely asking beforehand. It may be unconventional to fight a well known Meme like viral effect but that does not make is any more appropriate. :-) Will need to add this to [[Category:Advocacy]] some day... -- Arnulf Christl President OSGeo http://www.osgeo.org ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [Fwd: RE: [OSGeo-Discuss] GDAL and ESRI]
Arnulf Christl ha scritto: I suggest to not use the term viral effect but rather call it a vaccine. or inherited, possibly more appropriate: you cannot get infected by free software, but if you derive from it, i.e. you share a common ancestor, you also get some of its properties (i.e. licencing). All the best. -- Paolo Cavallini: http://www.faunalia.it/pc ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
RE: [OSGeo-Discuss] GDAL and ESRI
HI Ravi, There is a nice term describing how GPL works - viral effect. If you touch GPL you will be GPeLd to GPL yourself. Unlike the flue ... there is not cure (-; Best regards: RAf Dr. Rafal Wawer K.U.Leuven RD Division SADL (Spatial Application Division) Celestijnenlaan 200e bus 2224 BE-3001 Leuven-Heverlee Belgium tel. 0032 16 329731 From: discuss-boun...@lists.osgeo.org [mailto:discuss-boun...@lists.osgeo.org] On Behalf Of Andrew Ross Sent: 08 November 2009 16:50 To: OSGeo Discussions Subject: Re: [OSGeo-Discuss] GDAL and ESRI Hi All, Adding to this discussion, there are a spectrum of open source licenses measured in terms of what they allow to derivative works. At one end of the spectrum, the GPL stipulates that if you base your software on a component that is licensed with the GPL license *and* distribute it, that derivative work must be licensed under the GPL license. On the other end of the spectrum, there are licenses that are very liberal in terms of what they allow - BSD and MIT are good examples of this. Reusing a component licensed under the BSD or MIT license does affect a derivative work. In terms of the GPL, distribution is a key. If you do not distribute your derivative work, then it does not become GPL. An example of this would be strictly in-house use, or developing a web based service. The exception, be aware there is a different class of the GPL, the Affero GPL that applies in the case of web services. With this license, you do not have to redistribute to trigger the GPL contamination - building a web service is enough to do so. There's a good video on what you should look out for and relative merits of various licenses here: http://www.fosslc.org/drupal/node/523 The 3 licenses discussed in this video are at opposite ends and roughly in the middle of the above spectrum. Andrew 2009/11/7 Yves Jacolin (free) yjaco...@free.frmailto:yjaco...@free.fr Le samedi 07 novembre 2009, Ravi a écrit : How come ESRI uses GDAL too, does open source support closed source too. Hi, It depends the OS Licence. GDAL licence is BSD-Like [1]. Some other are usinng GPL-LIKe licence. This kind of licence does not allow closed source to user open source licence. They need to open their source using a GPL-Like licence [2]. This is quiet complicated ;) Y. [1] http://en.wikipedia.org/wiki/BSD_licenses [2] http://en.wikipedia.org/wiki/GNU_General_Public_License -- Yves Jacolin - Donner la liberté aux individus ne suffit pas, il faut aussi leur donner du pouvoir, de la puissance d'agir. M Gauchet Give freedom to people is not enough, we also have to give them the power to use this freedom, to act. M Gauchet - http://yjacolin.gloobe.org http://softlibre.gloobe.org ___ Discuss mailing list Discuss@lists.osgeo.orgmailto:Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss -- Andrew ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] GDAL and ESRI
Hi All, Adding to this discussion, there are a spectrum of open source licenses measured in terms of what they allow to derivative works. At one end of the spectrum, the GPL stipulates that if you base your software on a component that is licensed with the GPL license *and* distribute it, that derivative work must be licensed under the GPL license. On the other end of the spectrum, there are licenses that are very liberal in terms of what they allow - BSD and MIT are good examples of this. Reusing a component licensed under the BSD or MIT license does affect a derivative work. In terms of the GPL, distribution is a key. If you do not distribute your derivative work, then it does not become GPL. An example of this would be strictly in-house use, or developing a web based service. The exception, be aware there is a different class of the GPL, the Affero GPL that applies in the case of web services. With this license, you do not have to redistribute to trigger the GPL contamination - building a web service is enough to do so. There's a good video on what you should look out for and relative merits of various licenses here: http://www.fosslc.org/drupal/node/523 The 3 licenses discussed in this video are at opposite ends and roughly in the middle of the above spectrum. Andrew 2009/11/7 Yves Jacolin (free) yjaco...@free.fr Le samedi 07 novembre 2009, Ravi a écrit : How come ESRI uses GDAL too, does open source support closed source too. Hi, It depends the OS Licence. GDAL licence is BSD-Like [1]. Some other are usinng GPL-LIKe licence. This kind of licence does not allow closed source to user open source licence. They need to open their source using a GPL-Like licence [2]. This is quiet complicated ;) Y. [1] http://en.wikipedia.org/wiki/BSD_licenses [2] http://en.wikipedia.org/wiki/GNU_General_Public_License -- Yves Jacolin - Donner la liberté aux individus ne suffit pas, il faut aussi leur donner du pouvoir, de la puissance d'agir. M Gauchet Give freedom to people is not enough, we also have to give them the power to use this freedom, to act. M Gauchet - http://yjacolin.gloobe.org http://softlibre.gloobe.org ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss -- Andrew ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] GDAL and ESRI
ARC-GIS 9.2 uses GDAL Need some pointers to Licensing or agreement there on. I am frequently asked questions on this. Example: ILWIS uses GDAL and became OpenGIS How come ESRI uses GDAL too, does open source support closed source too.. Ravi Kumar The INTERNET now has a personality. YOURS! See your Yahoo! Homepage. http://in.yahoo.com/ ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] GDAL and ESRI
Ravi wrote: ARC-GIS 9.2 uses GDAL Need some pointers to Licensing or agreement there on. I am frequently asked questions on this. Example: ILWIS uses GDAL and became OpenGIS How come ESRI uses GDAL too, does open source support closed source too.. You need to learn about the basic licencing models used by FOSS and FOSS4G. It is GPL, LGPL, BSD and MIT. GDAL is distributed under the terms of MIT license.: http://trac.osgeo.org/gdal/wiki/FAQGeneral#WhatlicensedoesGDALOGRuse After you know what's the difference between these licencing terms, you will understand how it is possible for ESRI to use GDAL. Best regards, -- Mateusz Loskot, http://mateusz.loskot.net Charter Member of OSGeo, http://osgeo.org ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] GDAL and ESRI
Le samedi 07 novembre 2009, Ravi a écrit : How come ESRI uses GDAL too, does open source support closed source too. Hi, It depends the OS Licence. GDAL licence is BSD-Like [1]. Some other are usinng GPL-LIKe licence. This kind of licence does not allow closed source to user open source licence. They need to open their source using a GPL-Like licence [2]. This is quiet complicated ;) Y. [1] http://en.wikipedia.org/wiki/BSD_licenses [2] http://en.wikipedia.org/wiki/GNU_General_Public_License -- Yves Jacolin - Donner la liberté aux individus ne suffit pas, il faut aussi leur donner du pouvoir, de la puissance d'agir. M Gauchet Give freedom to people is not enough, we also have to give them the power to use this freedom, to act. M Gauchet - http://yjacolin.gloobe.org http://softlibre.gloobe.org ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
