[Geo4All] [geoforall-ab] Ideas invited from "Geo for All" community for Global Week to help demonstrate and raise awareness of "geo" in education at UNESCO

Maria Brovelli maria.brovelli at polimi.it
Tue Aug 16 00:26:09 PDT 2016

Thanks Patrick for your clear explanation. As Maxi asked, why don't you 
consider to get incubated into OSGeo? I hope to have some virtual globes 
in the OSGeo family and having Cesium (and obviously NASA WW, which I've 
better known) among the flag software of OSGeo would be fantastic!

Best regards,


Il 15/08/2016 16:24, Cozzi, Patrick ha scritto:
> Hi all,
> As an educator and open-source geospatial developer, I admire the 
> principles of Geo4All.
> At the University of Pennsylvania, all of my course projects are 
> open-source; I mentor projects and speak in Penn's open-source 
> software development course; and I advise independent study projects 
> that produce useful open-source software [1].  I also serve on 
> conference committees such as FOSS4G NA and FedGeoDay.
> At AGI, I started Cesium and open-source development in general, and 
> continue to lead these efforts. There's some misinformation about 
> Cesium in this thread that I would like to clear up.
> 1. Cesium is truly open-source as defined by the Open Source 
> Initiative [2].  Cesium uses the Apache 2.0 license (an OSI approved 
> license [3]), follows the Contributor Covenant's Code of Conduct [4], 
> has dozens of contributors not employed by AGI [5], has public roadmap 
> discussions where everyone is encouraged to participate [6], strictly 
> follows Contributor License Agreements [7], has tons of documentation 
> to create an inclusive community for new users and contributors [8, 
> 9], and is considered by many to be an open-source community success 
> story [10].
> 2. In addition to creating a genuinely useful software project that 
> has, for example, proved to be a successful successor to Google Earth 
> [11] and widely used at NASA (search for "NASA" in [12]), the Cesium 
> team is now creating an ecosystem including open formats to move the 
> 3D geospatial field forward without vendor lock-in.  These formats 
> include glTF for efficient 3D models [13], an open standard that we 
> created as part of The Khronos Group (who also maintain WebGL, OpenGL, 
> COLLADA, etc), and 3D Tiles for streaming massive heterogeneous 3D 
> geospatial datasets [14]. We've fostered these formats in openness by 
> having spec development, editing, and discussion in GitHub repos.
> 3. The existence of a Cesium Pro version does not imply that 
> open-source Cesium is a distant second. Cesium Pro could more 
> literally be named "Cesium with niche aerospace features."  It serves 
> a narrow market that creates funding for the sustainability and rapid 
> development of the broad open-source Cesium.  AGI is passionately 
> supporting open-source Cesium for the long-haul as all our new 
> initiatives are built on it.  We would, for example, never make the 
> core terrain and imagery engine faster in Cesium Pro, but not 
> open-source Cesium.  The tangled fork alone would be too much work to 
> maintain.  Open-source Cesium will remain first rate and use only open 
> formats so, for example, data sources can come from any vendor, with 
> open- or closed-source software.
> Please let me know if you have specific questions about Cesium.  I'm 
> happy to provide info and respect that ultimately the decision to use 
> Cesium for Geo4All, MapStory, etc. is up to you.
> Also, one thought for criteria for Geo4All's endorsement: consider a 
> minimal first requirement of only using projects with OSI approved 
> licenses as this comes with many guarantees about the open use of the 
> project [3].
> Finally, I suggest avoiding terms like "license free" since if a 
> project does not have a license, it is technically "all rights 
> reserved."  I would also try to avoid "commercial" in some contexts 
> since, at least in the US government's eyes, open-source software is 
> commercial software [15].
> Thanks,
> Patrick
> http://www.seas.upenn.edu/~pcozzi/
> [1] http://www.seas.upenn.edu/~pcozzi/projects.html
> [2] https://opensource.org/osd-annotated
> [3] https://opensource.org/licenses
> [4] 
> https://github.com/AnalyticalGraphicsInc/cesium/blob/master/CONTRIBUTING.md#code-of-conduct
> [5] 
> https://github.com/AnalyticalGraphicsInc/cesium/blob/master/CONTRIBUTORS.md
> [6] https://groups.google.com/forum/#!topic/cesium-dev/jGgNInY2Fqo
> [7] 
> https://github.com/AnalyticalGraphicsInc/cesium/blob/master/CONTRIBUTING.md#contributor-license-agreement-cla
> [8] http://cesiumjs.org/tutorials.html
> [9] 
> https://github.com/AnalyticalGraphicsInc/cesium/blob/master/Documentation/Contributors/README.md
> [10] 
> http://cesiumjs.org/publications.html#growing-an-open-source-community-lessons
> [11] http://cesiumjs.org/for-google-earth-developers.html
> [12] http://cesiumjs.org/demos.html
> [13] https://www.khronos.org/gltf
> [14] https://github.com/AnalyticalGraphicsInc/3d-tiles
> [15] 
> http://dodcio.defense.gov/Open-Source-Software-FAQ/#Q:_Is_open_source_software_commercial_software.3F_Is_it_COTS.3F
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Prof. Maria Antonia Brovelli
Vice Rector for Como Campus and GIS Professor
Politecnico di Milano

ISPRS WG IV/5 "Web and Cloud Based Geospatial Services and Applications"; OSGeo; ICA-OSGeo-ISPRS AB; NASA WorldWind Europa Challenge; SIFET
Sol Katz Award 2015
Via Natta, 12/14 - 22100 COMO (ITALY)
Tel. +39-031-3327336 - Mob. +39-328-0023867 - fax. +39-031-3327321
e-mail1: maria.brovelli at polimi.it
e-mail2: prorettrice at como.polimi.it

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