<div dir="ltr"><div><div><div><div><div>Hi Peter,<br><br></div>How open is the OGC registry ?<br>If data came from EPSG, it will not be really open : they never answer the request I sent.<br></div>I think it's a human scalability problem (not really maintained).<br></div><div><br>The idea is to make an open registry.<br></div>May be it can use OGC registry, but projects might want to superseed it when request are not taken into account.<br></div>Github offer an easy way to fork data, for free.<br><br></div>Are you with us so ?<br><br><div><div>Regards,<br></div><div>Julien.<br></div><div><div><div><br></div></div></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">2016-09-01 21:29 GMT+02:00 Peter Baumann <span dir="ltr"><<a href="mailto:p.baumann@jacobs-university.de" target="_blank">p.baumann@jacobs-university.de</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Manfred,<br>
<span class=""><br>
On 09/01/2016 05:55 PM, <a href="mailto:manfred@egger-gis.at">manfred@egger-gis.at</a> wrote:<br>
> Hello Peter,<br>
><br>
> Sorry, I have never heard of this standard.<br>
<br>
</span>it is not a standard, it is a service offered by OGC (and based on standards).<br>
<span class=""><br>
> Is there a existing sample application using this database by OGC? Is there a simple way to get the WKT like:<br>
> <a href="http://www.epsg-registry.org/" rel="noreferrer" target="_blank">http://www.epsg-registry.org/</a><br>
<br>
</span>the link below yields GML. Other representations can be added - for example, the<br>
activist group establishing here might submit WKT representations; better,<br>
though, would be a tool for converting from GML as EPSG does updates every now<br>
and then. Such a tool might get extended at some time to also deliver JSON<br>
representations. Ideally it would do that on the fly whenever a CRS definition<br>
is requested. But now I am jumping ahead - obviously there is good room for<br>
extension and further services, at the same time avoiding duplication of effort.<br>
<br>
cheers,<br>
Peter<br>
<br>
PS: note that this service endpoint is mainly for m2m requests, not so much for<br>
human inspection. Another facet for discussion.<br>
<br>
PS2: the underlying service software is open-source (LGPL), might be of<br>
interest, too.<br>
<div class="HOEnZb"><div class="h5"><br>
<br>
> 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?<br>
><br>
> Best regards,<br>
><br>
> Manfred<br>
><br>
><br>
><br>
> -----Original Message-----<br>
> From: "Peter Baumann" <<a href="mailto:p.baumann@jacobs-university.de">p.baumann@jacobs-university.<wbr>de</a>><br>
> Sent: Thursday, September 1, 2016 3:20am<br>
> To: "Luís de Sousa" <<a href="mailto:luis.de.sousa@protonmail.ch">luis.de.sousa@protonmail.ch</a>>, "<a href="mailto:manfred@egger-gis.at">manfred@egger-gis.at</a>" <<a href="mailto:manfred@egger-gis.at">manfred@egger-gis.at</a>><br>
> Cc: <a href="mailto:discuss@lists.osgeo.org">discuss@lists.osgeo.org</a><br>
> Subject: Re: [OSGeo-Discuss] Detect and define the coordinate system of gis data with no projection information automatically<br>
><br>
> Hi all,<br>
><br>
> a public registry of all EPSG CRSs and their definitions is provided by OGC<br>
> since many years under <a href="http://www.opengis.net/" rel="noreferrer" target="_blank">http://www.opengis.net/</a> . For example, WGS 84 is<br>
> accessible through <a href="http://www.opengis.net/def/crs/EPSG/0/4326" rel="noreferrer" target="_blank">http://www.opengis.net/def/<wbr>crs/EPSG/0/4326</a> .<br>
><br>
> This service is kept in sync with EPSG releases and adds further CRS families,<br>
> such as Index CRSs and height CRSs and in future, once definitions are resolved<br>
> by OGC, also time ("temporal") CRSs. Arrangement has been made to also host<br>
> Planetary CRS definitions of the International Astronomical Union (IAU).<br>
><br>
> Repeating (part of) this comprehensive (and authoritative) work may be less<br>
> fruitful, but building additional services on top of that might make a lot of<br>
> sense indeed.<br>
><br>
> my 2 cents,<br>
><br>
> Peter<br>
><br>
><br>
><br>
> On 08/28/2016 08:39 PM, Luís de Sousa wrote:<br>
>> Dear Manfred,<br>
>><br>
>> The projection finder project is not entirely clear to me, however, the<br>
>> suggestion for a new coordinate system database is indeed pertinent. This was<br>
>> referred in other addresses at the conference: <a href="http://spatialreference.org" rel="noreferrer" target="_blank">spatialreference.org</a> has not<br>
>> been maintained for several years; parts of proj4 are not, or poorly, maintained.<br>
>><br>
>> Besides a reference system database, it would also be quite useful to have a<br>
>> projection data base, including mathematical definitions, map sketches of<br>
>> their ouput and some clues or guidelines to its implementation (e.g.<br>
>> pseudo-code algorithms). This information is today very dispersed in the web.<br>
>><br>
>> Regards,<br>
>><br>
>> Luís<br>
>><br>
>><br>
>><br>
>><br>
>>> -------- Original Message --------<br>
>>> Subject: [OSGeo-Discuss] Detect and define the coordinate system of gis data<br>
>>> with no projection information automatically<br>
>>> Local Time: August 28, 2016 6:05 PM<br>
>>> UTC Time: August 28, 2016 4:05 PM<br>
>>> From: <a href="mailto:manfred@egger-gis.at">manfred@egger-gis.at</a><br>
>>> To: <a href="mailto:discuss@lists.osgeo.org">discuss@lists.osgeo.org</a><br>
>>><br>
>>> Hello,<br>
>>><br>
>>> At FOSS4G 2016 in Bonn i talked with Venkatesh Raghavan about my poster<br>
>>> presentation "SHAPEFILE PROJECTIONFINDER". URL to poster:<br>
>>> <a href="http://www.egger-gis.at/app/download/13175253496/POSTER_EGGER_FOSS4G.pdf?t=1469787116" rel="noreferrer" target="_blank">http://www.egger-gis.at/app/<wbr>download/13175253496/POSTER_<wbr>EGGER_FOSS4G.pdf?t=1469787116</a><br>
>>><br>
>>> He recommended to start a discussion in this mailing list about the topic<br>
>>> mentioned in the mail subject.<br>
>>><br>
>>> I also talked in Bonn with Petr Pridal about <a href="http://epsg.io" rel="noreferrer" target="_blank">http://epsg.io</a>. Some days before<br>
>>> Bonn i wrote emails to Aaaron Racicot and the mailing list of<br>
>>> <a href="http://spatialrefrence.org" rel="noreferrer" target="_blank">http://spatialrefrence.org</a>.<br>
>>><br>
>>> Please read first carefully on my website, what i plan to do:<br>
>>><br>
>>> <a href="http://www.egger-gis.at/shapefile-projectionfinder/" rel="noreferrer" target="_blank">http://www.egger-gis.at/<wbr>shapefile-projectionfinder/</a><br>
>>><br>
>>> There are two problems to solve before tools like SHAPEFILE PROJECTIONFINDER<br>
>>> can be developed as a sustainable solution:<br>
>>><br>
>>> 1. Until today there is no stable free service running like<br>
>>> <a href="http://www.projfinder.com" rel="noreferrer" target="_blank">www.projfinder.com</a> by Aaron Racicot, which can be used by all developers.<br>
>>><br>
>>> 2. Until today there is no open source database which includes all coordinate<br>
>>> system with epsg-code and additionally user and esri definded grids.<br>
>>><br>
>>> There are open source solutions like:<br>
>>><br>
>>> - <a href="http://spatialrefrence.org" rel="noreferrer" target="_blank">spatialrefrence.org</a><br>
>>> - <a href="http://epsg.io" rel="noreferrer" target="_blank">epsg.io</a><br>
>>><br>
>>> But in the detail both solutions have problems to update their database with<br>
>>> low costs.<br>
>>><br>
>>> Maybe OSGeo can promote a stable service with load balancing on the base of<br>
>>> an existing solution like <a href="http://epsg.io" rel="noreferrer" target="_blank">epsg.io</a> including Aarons idea?<br>
>>><br>
>>> Maybe organisation like UN, a university or EU (INTERREG) are possible<br>
>>> project partners/sponsors for such a solution?<br>
>>><br>
>>> The goal is: Tools like SHAPEFILE PROJECTIONFINDER, a Q-GIS-Plugin or a<br>
>>> mobile application can use a stable free gis-service updated daily and help<br>
>>> gis users to solve projection troubles faster. I think gis users working not<br>
>>> everyday with gis will be happy about this solutions?<br>
>>><br>
>>> What do you think about my idea?<br>
>>><br>
>>> Best regards,<br>
>>><br>
>>> Manfred Egger<br>
>>><br>
>>> Alois-Schrott-Str. 34<br>
>>> 6020 Innsbruck<br>
>>> Austria<br>
>>><br>
>>> Web: <a href="http://egger-gis.at" rel="noreferrer" target="_blank">http://egger-gis.at</a><br>
>>><br>
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>><br>
>><br>
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<br>
--<br>
Dr. Peter Baumann<br>
- Professor of Computer Science, Jacobs University Bremen<br>
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