Re: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically
Dear all, thank you for the many contributions to this discussion. Some background: If you have not done so, please watch the address by Calvin Metcalf on Proj [0]. From his reflections and the discussion that ensued it became apparent to me that presently there is no CRS/projection registry in the public domain under maintenance. Take the EPSG registry for instance: not exactly open and does not provide essential information, particular on projections. I myself have struggled recently to find information in the public domain on recent projections such as Eckart's or Snyder's. Digging into scientific publications is pretty much the only way to go (something not every one can do). The original message by Manfred was just a catalyst to this idea of an OSGeo sponsored/sanctioned registry. My idea is to use GitHub and its pull request mechanism as way to force human verification of contributions. Contrary to other registries, this would be a completely transparent process. The end result would be a structure of MD files hooked up with ReadTheDocs. It just happens the Proj4 documentation that Even linked to [1] is already a step in this direction. I agree that any new initiative should not overlap with ongoing projects - in particular since Proj4 is an OSGeo project. Therefore the route action right now would be to contribute to the Proj4 documentation, as Even suggests. There is though a major issue to solve, the Proj4 handles. They are ambiguous in some cases (as Calvin reports) and do not cover all projections out there. So, there is some hard rock to break. Regards, Luís [0] http://ftp5.gwdg.de/pub/misc/openstreetmap/FOSS4G-2016/foss4g-2016-1163-nobody_cares_about_your_datum_or_the_kleinstaaterei_of_spatial_reference_systems-hd.webm [1] http://proj4.org/projections/index.html___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically
Hi Manfred, OSGeo members are elected [0]. But I wouldn't see a problem in having you integrating the project. I would just ask you to register at the OSGeo Wiki [1], and describe in your user page your work and how it relates to FOSS4G. Regards, Luís [0] http://www.osgeo.org/membership [1] https://wiki.osgeo.org/wiki/Special:RequestAccount Original Message Subject: Re: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically Local Time: August 31, 2016 9:26 AM UTC Time: August 31, 2016 7:26 AM From: manf...@egger-gis.at To: luis.de.so...@protonmail.ch moquet.jul...@gmail.com,discuss@lists.osgeo.org https://github.com/maegger Until today i am no member of OSGeo. So is there a way to get a member of OSGeo? Best regards Manfred___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically
Hi Nikos, I would like to create a core group composed mostly by (but not restricted to) charter members to steer the project. Therefore, even if you are not able to contribute much, you can always help with knowledge and decision making. Over the weekend I will create a GitHub group and a project to start drafting procedures and the templates. Once that is done I will address the board for the support. Regards, Luís Original Message Subject: Re: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically Local Time: August 31, 2016 10:45 AM UTC Time: August 31, 2016 8:45 AM From: nikos.alexand...@unige.ch To: luis.de.so...@protonmail.ch manf...@egger-gis.at,discuss@lists.osgeo.org Luís de Sous: >Good, three is already a group! > >The strategy will be to define the data model and the templates while >in parallel requiring formal endorsement from OSGeo. A project like >this can only succeed if backed by the foundation. > >Please send me your GitHub handles. I would also ask you to link to >your OSGeo member page in your bio (Wiki user page). Dear Luis, is this open to anyone (OSGeo members at least)? I'd like to be able to follow this, though not very regularly. Merci, Nikos___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically
Good, three is already a group! The strategy will be to define the data model and the templates while in parallel requiring formal endorsement from OSGeo. A project like this can only succeed if backed by the foundation. Please send me your GitHub handles. I would also ask you to link to your OSGeo member page in your bio (Wiki user page). Luís Original Message Subject: Re: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically Local Time: 30 August 2016 8:13 PM UTC Time: 30 August 2016 18:13 From: manf...@egger-gis.at To: moquet.jul...@gmail.com luis.de.so...@protonmail.ch,discuss@lists.osgeo.org OK. I want to join the new github group, too. Best regards, Manfred -Original Message- From: "Julien Moquet" Sent: Tuesday, August 30, 2016 1:04pm To: "Luís de Sousa" Cc: discuss@lists.osgeo.org, manf...@egger-gis.at Subject: Re: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically Set me into ! Julien. Le 30 août 2016 11:34, "Luís de Sousa" a écrit : > Hi Julien et al., > > My experience with Wikis is mostly negative, however, the GitHub > "database" could work very well. The project could be hooked up to > ReadTheDocs and folk would just commit their .rst and .md files. > Preparatory work would go around defining the templates to submit > projections, data and systems. > > Who wants to join? I will create a group at GitHub and get this going in > the coming days. > > Cheers, > > Luís > > > Original Message > Subject: Re: [OSGeo-Discuss] Detect and define the coordinate system of > gis data with no projection information automatically > Local Time: 29 August 2016 11:03 PM > UTC Time: 29 August 2016 21:03 > From: moquet.jul...@gmail.com > To: manf...@egger-gis.at > luis.de.so...@protonmail.ch,discuss@lists.osgeo.org > > Hi all, > > I am agree with manfred and Luis : we can improve spatial reference data a > lot ! > It is a good idea to extend it to mathematical definitions, but its sounds > like a wiki. > I propose to start checking up wikipedia's data over projection references > and mathematical models, up to the proj4's communities (I mean using the > projection issues from them). It is costless, easy to share and manage, and > may be we can get feed back faster than emailing epsg group ! > And I guess, lot of people do so ! > > On the other hand, I learn from proj4php, that a github project could be a > good database. > As many of us see things differently, they will fork it their way. > What do you think of ? > I will tell if it is working, on spatialreference mailing list. > > Julien2512, > > 2016-08-29 14:45 GMT+02:00 manf...@egger-gis.at : > >> Dear Luis, >> >> Which concrete detail is not clear about the projection finder project? >> >> Maybe a look at the testservice of Aaron will help to understand this >> idea: www.projfinder.com ? >> >> Best regards, >> >> Manfred >> >> -Original Message- >> From: "Luís de Sousa" >> Sent: Sunday, August 28, 2016 2:39pm >> To: "manf...@egger-gis.at" >> Cc: discuss@lists.osgeo.org >> Subject: Re: [OSGeo-Discuss] Detect and define the coordinate system of >> gis data with no projection information automatically >> >> Dear Manfred, >> >> >> The projection finder project is not entirely clear to me, however, the >> suggestion for a new coordinate system database is indeed pertinent. This >> was referred in other addresses at the conference: spatialreference.org >> has not been maintained for several years; parts of proj4 are not, or >> poorly, maintained. >> >> Besides a reference system database, it would also be quite useful to >> have a projection data base, including mathematical definitions, map >> sketches of their ouput and some clues or guidelines to its implementation >> (e.g. pseudo-code algorithms). This information is today very dispersed in >> the web. >> >> Regards, >> >> Luís >> >> >> >> >> >> >> Original Message >> Subject: [OSGeo-Discuss] Detect and define the coordinate system of gis >> data with no projection information automatically >> Local Time: August 28, 2016 6:05 PM >> UTC Time: August 28, 2016 4:05 PM >> From: manf...@egger-gis.at >> To: discuss@lists.osgeo.org >> >> Hello, >> >> At FOSS4G 2016 in Bonn i talked with Venkatesh Raghavan about my poster >> presentation "SHAPEFILE PROJECTIONFINDER&quo
Re: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically
Hi Julien et al., My experience with Wikis is mostly negative, however, the GitHub "database" could work very well. The project could be hooked up to ReadTheDocs and folk would just commit their .rst and .md files. Preparatory work would go around defining the templates to submit projections, data and systems. Who wants to join? I will create a group at GitHub and get this going in the coming days. Cheers, Luís Original Message Subject: Re: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically Local Time: 29 August 2016 11:03 PM UTC Time: 29 August 2016 21:03 From: moquet.jul...@gmail.com To: manf...@egger-gis.at luis.de.so...@protonmail.ch,discuss@lists.osgeo.org Hi all, I am agree with manfred and Luis : we can improve spatial reference data a lot ! It is a good idea to extend it to mathematical definitions, but its sounds like a wiki. I propose to start checking up wikipedia's data over projection references and mathematical models, up to the proj4's communities (I mean using the projection issues from them). It is costless, easy to share and manage, and may be we can get feed back faster than emailing epsg group ! And I guess, lot of people do so ! On the other hand, I learn from proj4php, that a github project could be a good database. As many of us see things differently, they will fork it their way. What do you think of ? I will tell if it is working, on spatialreference mailing list. Julien2512, 2016-08-29 14:45 GMT+02:00 manf...@egger-gis.at : Dear Luis, Which concrete detail is not clear about the projection finder project? Maybe a look at the testservice of Aaron will help to understand this idea: www.projfinder.com ? Best regards, Manfred -Original Message----- From: "Luís de Sousa" Sent: Sunday, August 28, 2016 2:39pm To: "manf...@egger-gis.at" Cc: discuss@lists.osgeo.org Subject: Re: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically Dear Manfred, The projection finder project is not entirely clear to me, however, the suggestion for a new coordinate system database is indeed pertinent. This was referred in other addresses at the conference: spatialreference.org has not been maintained for several years; parts of proj4 are not, or poorly, maintained. Besides a reference system database, it would also be quite useful to have a projection data base, including mathematical definitions, map sketches of their ouput and some clues or guidelines to its implementation (e.g. pseudo-code algorithms). This information is today very dispersed in the web. Regards, Luís Original Message Subject: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically Local Time: August 28, 2016 6:05 PM UTC Time: August 28, 2016 4:05 PM From: manf...@egger-gis.at To: discuss@lists.osgeo.org Hello, At FOSS4G 2016 in Bonn i talked with Venkatesh Raghavan about my poster presentation "SHAPEFILE PROJECTIONFINDER". URL to poster: http://www.egger-gis.at/app/download/13175253496/POSTER_EGGER_FOSS4G.pdf?t=1469787116 He recommended to start a discussion in this mailing list about the topic mentioned in the mail subject. I also talked in Bonn with Petr Pridal about http://epsg.io. Some days before Bonn i wrote emails to Aaaron Racicot and the mailing list of http://spatialrefrence.org. Please read first carefully on my website, what i plan to do: http://www.egger-gis.at/shapefile-projectionfinder/ There are two problems to solve before tools like SHAPEFILE PROJECTIONFINDER can be developed as a sustainable solution: 1. Until today there is no stable free service running like www.projfinder.com by Aaron Racicot, which can be used by all developers. 2. Until today there is no open source database which includes all coordinate system with epsg-code and additionally user and esri definded grids. There are open source solutions like: - spatialrefrence.org - epsg.io But in the detail both solutions have problems to update their database with low costs. Maybe OSGeo can promote a stable service with load balancing on the base of an existing solution like epsg.io including Aarons idea? Maybe organisation like UN, a university or EU (INTERREG) are possible project partners/sponsors for such a solution? The goal is: Tools like SHAPEFILE PROJECTIONFINDER, a Q-GIS-Plugin or a mobile application can use a stable free gis-service updated daily and help gis users to solve projection troubles faster. I think gis users working not everyday with gis will be happy about this solutions? What do you think about my idea? Best regards, Manfred Egger Alois-Schrott-Str. 34 6020 Innsbruck Austria Web: http://egger-gis.at ___ Discuss mailing list Disc
[OSGeo-Discuss] OSGeo Funding
Dear all, During the conferenced was referenced a budget to support FOSS4G projects and/or initiatives. To whom exactly should I address a concrete funding proposal? Thank you, Luís___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically
Dear Manfred, The projection finder project is not entirely clear to me, however, the suggestion for a new coordinate system database is indeed pertinent. This was referred in other addresses at the conference: spatialreference.org has not been maintained for several years; parts of proj4 are not, or poorly, maintained. Besides a reference system database, it would also be quite useful to have a projection data base, including mathematical definitions, map sketches of their ouput and some clues or guidelines to its implementation (e.g. pseudo-code algorithms). This information is today very dispersed in the web. Regards, Luís Original Message Subject: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically Local Time: August 28, 2016 6:05 PM UTC Time: August 28, 2016 4:05 PM From: manf...@egger-gis.at To: discuss@lists.osgeo.org Hello, At FOSS4G 2016 in Bonn i talked with Venkatesh Raghavan about my poster presentation "SHAPEFILE PROJECTIONFINDER". URL to poster: http://www.egger-gis.at/app/download/13175253496/POSTER_EGGER_FOSS4G.pdf?t=1469787116 He recommended to start a discussion in this mailing list about the topic mentioned in the mail subject. I also talked in Bonn with Petr Pridal about http://epsg.io. Some days before Bonn i wrote emails to Aaaron Racicot and the mailing list of http://spatialrefrence.org. Please read first carefully on my website, what i plan to do: http://www.egger-gis.at/shapefile-projectionfinder/ There are two problems to solve before tools like SHAPEFILE PROJECTIONFINDER can be developed as a sustainable solution: 1. Until today there is no stable free service running like www.projfinder.com by Aaron Racicot, which can be used by all developers. 2. Until today there is no open source database which includes all coordinate system with epsg-code and additionally user and esri definded grids. There are open source solutions like: - spatialrefrence.org - epsg.io But in the detail both solutions have problems to update their database with low costs. Maybe OSGeo can promote a stable service with load balancing on the base of an existing solution like epsg.io including Aarons idea? Maybe organisation like UN, a university or EU (INTERREG) are possible project partners/sponsors for such a solution? The goal is: Tools like SHAPEFILE PROJECTIONFINDER, a Q-GIS-Plugin or a mobile application can use a stable free gis-service updated daily and help gis users to solve projection troubles faster. I think gis users working not everyday with gis will be happy about this solutions? What do you think about my idea? Best regards, Manfred Egger Alois-Schrott-Str. 34 6020 Innsbruck Austria Web: http://egger-gis.at ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
