Re: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically
Are there other members of this discussion list who want to talk about the special topic described in Aarons mail (look below)? If there are more than two it would make sense to start a separate group. Best regards, Manfred -Original Message- From: "Aaron Racicot" Sent: Friday, September 2, 2016 2:20pm To: "Even Rouault" Cc: discuss@lists.osgeo.org Subject: Re: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discussYes... this conversation has kind of morphed. The projfinder.com idea started as a side project in collaboration with the cugos.org group. The idea is simple... Given a dataset with an unknown projection: 1) Have the end user give a "rough estimate" of the geo-location of the dataset by centering a map on that location 2) Have the user give one X,Y pair of coordinates from the dataset From this information we can try to "guess" the projection of the data. I presented this idea at FOSS4G NA 2013 and the slides are located here: http://media.reprojected.com/presentations/Presentations/foss4g-na-2013/projfinder.pdf Manfred has taken this concept and created a desktop tool with a similar goal... help people determine the projection of existing data using some spatial context given by the user. It is true that this idea requires a spatial database of projections (and bounding boxes of projection validity). The test server that this old (circa 2013) projfinder service is running on is small and not meant to be a production system. It is based on EPSG data loaded into postgis to do the processing. For clarity it seems to me we have multiple conversations going (and probably can migrate them someplace other than the general OSGeo Discuss list): 1) Discussion of open and authoritative projection databases 2) Discussion of services built around these databases 3) A more narrow conversation on the validity of a service like projfinder.com and its future (where it is served, etc). Anyway, I have not really chimed in as I am not so involved in #1 and #2... but if people want to take a conversation about #3 elsewhere... I am happy to follow. Aaron On Fri, Sep 2, 2016 at 12:50 AM, Even Rouault wrote: > Foks, > > I read through the emails of this thread and I'm still not sure to > understand > what the exact focus would be. It seems it might go beyond the title of > this > email thread. > > Is it about documentation about projections ? If so, I guess improving > proj.4 > documentation could be appreciated. There has been a new commit just last > night ( http://lists.maptools.org/pipermail/proj/2016-September/ > 007480.html ) > to add the chart of each projection : > http://proj4.org/projections/index.html . There are only images extracted > from > ftp://ftp.remotesensing.org/proj/OF90-284.pdf for now but that would be > great > to extend them with formulas, etc... > > Is it about having a catalog of spatial reference systems (and all related > information: projections, projection parameters, ellipsoids, datums, prime > meridians, area of use, transformations, etc...) ? Then there are different > projects already tackling that. For example GDAL starts with the EPSG > catalog > + some algorithms to detect one of the many datum shifts to WGS84 (this > part > is controversial and could/should be improved), and that is the source from > which the proj.4 'espg' catalog (the whole process is documented at > https://svn.osgeo.org/metacrs/geotiff/trunk/libgeotiff/csv/README). This > process > is a bit cumbersome and we had some discussions last year about perhaps > adopting a SQLite3 database instead (see thread starting at > https://lists.osgeo.org/pipermail/metacrs/2015-August/000846.html) : this > hasn't made progress yet. > GDAL has also a few extra catalogs from (somewhat old) ESRI definitions, > and > other vendors. There are also catalogs for SRS of other planets : > https://trac.osgeo.org/gdal/ticket/6623 (interestingly Peter Baumann > mentionned that the EPSG service might host this catalog in the future) > A tricky part about all this catalogs is the intellectual property behind > as > there are often not completely "free" in the meaning we generally give to > that > term for software (redistribution is OK, but most often modifying > definitions > is not allowed). But beyond that, as raised by Carl Reed, adding new > spatial > reference system definitions, or editing existing ones, is something that > needs > some form of validation at some point (unless you decide that anyone can > modify anything, but that opens the door to voluntary or unvoluntary > mess). It > is similar to when someone submits a patch/pull request for code: someone > needs to make a decision if it is appropriate or not. > > You've also identified spatialreference.org (now somewhat abandonned due > to > l
Re: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically
Hello Peter,
Sorry, I have never heard of this standard. Is there a existing sample
application using this database by OGC? Is there a simple way to get the WKT
like:
http://www.epsg-registry.org/
To Luís: Maybe before we start with a new datamodel and templates, we should
look what solutions exist and collect them in the github project and then
decide?
Best regards,
Manfred
-Original Message-
From: "Peter Baumann"
Sent: Thursday, September 1, 2016 3:20am
To: "Luís de Sousa" , "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
Hi all,
a public registry of all EPSG CRSs and their definitions is provided by OGC
since many years under http://www.opengis.net/ . For example, WGS 84 is
accessible through http://www.opengis.net/def/crs/EPSG/0/4326 .
This service is kept in sync with EPSG releases and adds further CRS families,
such as Index CRSs and height CRSs and in future, once definitions are resolved
by OGC, also time ("temporal") CRSs. Arrangement has been made to also host
Planetary CRS definitions of the International Astronomical Union (IAU).
Repeating (part of) this comprehensive (and authoritative) work may be less
fruitful, but building additional services on top of that might make a lot of
sense indeed.
my 2 cents,
Peter
On 08/28/2016 08:39 PM, Luís de Sousa wrote:
> 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
>>
>> ___
>
Re: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically
OK. I will send a request in the next days to OSGeo about my wiki-page. One question about github: Is it possible to run something like a "servlet" on github, which answers requests? I think not? Maybe we have later to setup a additional webserver, which uses github as database. So thats not the main problem. Best regards, Manfred -Original Message- From: "Luís de Sousa" Sent: Wednesday, August 31, 2016 3:05pm To: "discuss@lists.osgeo.org" Subject: Re: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discussHi 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
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 -Original Message- From: "Luís de Sousa" Sent: Wednesday, August 31, 2016 2:17am To: "manf...@egger-gis.at" Cc: "Julien Moquet" , discuss@lists.osgeo.org Subject: 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 >> Subj
Re: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically
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". URL to poster: >> http://www.egger-gis.at/app/download/13175253496/POSTER_EGGE >> R_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 >
Re: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically
Hi, should there not be a decision by OSGeo to promote a database before we start to collect data in github? Best regards, Manfred -Original Message- From: "Luís de Sousa" Sent: Tuesday, August 30, 2016 5:34am To: "Julien Moquet" Cc: "manf...@egger-gis.at" , discuss@lists.osgeo.org Subject: 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 PRO
Re: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically
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 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
[OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically
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
