[MetaCRS] gsb grids in Proj4js

Tue Mar 19 08:46:45 PDT 2013

Didier,

Did you test to see if you have commit access for proj4js?  If you can 
commit your patches, I'll endeavour to clean up what's left and then we 
can put out a new point release.   I'm also working on a version to work 
with the Closure compiler (to be released as version 1.2) but it would 
be good to have the existing tickets fixed before that happens.

Mike

On 19/03/2013 11:16 AM, Juan Pedro Pérez Alcántara wrote:
> Thanks for the reply, Richard. Again, forgive me for being ignorant 
> about the development process. Will your ticket be part of the 
> official code? Do you have any idea when it will be accepted? From the 
> time being, we can cope very well with a 7-parameter datum shifting, 
> but being able to incorporate the GSB will be definitively a very good 
> point for very precise applications.
>
> Thanks,
> Juan Pedro Pérez Alcántara
> Technical Director
> jp.alcantara at geographica.gs <mailto:alberto.asuero at geographica.gs>
> +34 670 786 422
> Rodio 35
> 41007 Sevilla
> Spain
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>
> T +34  954 437 818
> F +34  955 110 441
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>
> On Fri, Mar 15, 2013 at 2:41 PM, RICHARD Didier <didier.richard at ign.fr 
> <mailto:didier.richard at ign.fr>> wrote:
>
>     > Hello everyone,
>     >
>
>     Hi Juan Pedro,
>
>     > I'm new to the list and to Proj4js. I've managed to do 7 parameters
>     > transformations between ED50 and ETRS89 (specifically, between
>     EPSG:23030
>     > (ED50 UTM30N) and EPSG:25830 (ETRS89 UTM30N) and works like a charm,
>     > congratulations to the Proj4js dev team. I was wondering if gsb
>     grids
>     > datum
>     > shifting is already in the stable trunk. I've seen there is a
>     ticket in
>     > TRAC regarding this but, not being completely familiar with TRAC
>     and the
>     > development process, I don't know if this support is already in
>     the stable
>     > trunk. I've seen also that a gsb.js file is added to the
>     definitions.
>
>
>     I have not yet committed ticket 81 to truck for the moment. But, i can
>     write that it is used in production for our openlayers' based webapp.
>
>     > Would
>     > you please drop a hint on how this file is created from the
>     original gsb
>     > file?
>     >
>
>     The structure of the gsb grid is detailled in the ticket: (CTABLE
>     based). I didnot convert my gsb to this format, but i am sure it
>     can be
>     done via a PROJ4 dedicated app.
>
>     Regards,
>
>     Didier
>     > Besides, if the dev team consider it useful, I can provide the
>     23030 and
>     > 25830 EPSG.js definition files for the source trunk, with the
>     > transformation parameters applicable for the almost the entirety
>     of the
>     > Iberian Peninsula (only the northwest (Galician sector) uses a
>     different
>     > set of parameters).
>     >
>     > Thanks, and keep up with the great work!
>     >
>     > Regards,
>     > Juan Pedro Pérez Alcántara
>     > Technical Director
>     > jp.alcantara at geographica.gs <mailto:jp.alcantara at geographica.gs>
>     <alberto.asuero at geographica.gs <mailto:alberto.asuero at geographica.gs>>
>     > +34 670 786 422 <tel:%2B34%20670%20786%20422>
>     > Rodio 35
>     > 41007 Sevilla
>     > Spain
>     >
>     <http://maps.google.es/maps?f=q&source=s_q&hl=es&geocode=&q=rodio+35,+sevilla+espa%C3%B1a&sll=40.396764,-3.713379&sspn=10.787528,19.753418&ie=UTF8&hq=&hnear=Calle+Rodio,+35,+41007+Sevilla,+Andaluc%C3%ADa&t=h&z=16>
>     > T +34 954 437 818 <tel:%2B34%20%20954%20437%20818>
>     > F +34 955 110 441 <tel:%2B34%20%20955%20110%20441>
>     > Visit our web
>     > *www.geographica.gs <http://www.geographica.gs>*
>     > <http://www.geographica.gs/>
>     > Follow us on Twitter
>     > *@Geographica_ST*
>     > <https://twitter.com/#%21/Geographica_GS>
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>
>     --
>     RICHARD Didier - Chef du pôle technique du Géoportail
>     2/4, avenue Pasteur - 94165 Saint Mandé Cedex
>     Tél : +33 (0) 1 43 98 83 23
>     <tel:%2B33%20%280%29%201%2043%2098%2083%2023>
>
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