[Proj] NADCON spec

[Richard didier]

Le Mercredi 9 Septembre 2009 16:44, Clifford J Mugnier a écrit :
> Contact Mr. David Doyle, Chief Geodesist at the National Geodetic Survey
> for an official copy of the suite of Fortran source code at: 
> Dave.Doyle at noaa.gov <mailto:Dave.Doyle at noaa.gov>   Note that the
> documentation is a bit sketchy since it was developed for internal use of
> the NGS scientific staff, and not as a "user-friendly package" for the
> general public.
>

Thanks a lot Clifford for the contact person information. I am forwarding this 
hint to our geodesists.

> However, I am pretty confident that they have not developed a tranlator
> from NTV2 to NADCON since the latter is the senior technique developed by
> LTCDR Warren Dewhurst for his dissertation at Ohio State University in the
> early 1980s.
>

We will then develop the converter from our internal format (ascii) to NADCON.


> Bon chance,
>

Merci beaucoup,

Regards,

didier
> Clifford J. Mugnier, C.P., C.M.S.
> Past National Director (2006-2008),
> Photogrammetric Applications Division
> American Society for Photogrammetry and Remote Sensing
> and
> Chief of Geodesy,
> CENTER FOR GEOINFORMATICS
> Department of Civil Engineering
> Patrick F. Taylor Hall 3223A
> LOUISIANA STATE UNIVERSITY
> Baton Rouge, LA  70803
> Voice and Facsimile:  (225) 578-8536 [Academic]
> Voice and Facsimile:  (225) 578-8925 [Research]
> Honorary Life Member of the
> Louisiana Society of Professional Surveyors
> Member Emeritus of the ASPRS
> Member of the Americas Petroleum Survey Group
> ======================================================
> http://www.asprs.org/resources/GRIDS/
> ======================================================
>
> ________________________________
>
> From: proj-bounces at lists.maptools.org on behalf of Richard didier
> Sent: Wed 09-Sep-09 04:04
> To: proj at lists.maptools.org
> Subject: [Proj] NADCON spec
>
>
>
> Hi all,
>
> I need to produce NADCON grid from our NTV2 grid.
>
> I have searched the web for NADCON grids specs and only found that a NADCON
> grid is a bundle including the data AND the software that reads them ... I,
> also, found that there are two files needed (one for longitudes, another
> one for latitudes) and that longitudes/latitudes must be round even values
> ... But, I am not sure of all of that.
>
> On the other hand, PROJ.4 includes a reader for converting lla (ascii) to
> binary ... and lla is mentioned in some web pages.
>
> So, is there "real" specifications for NADCON Grids ? and could someone
> point me to them ?
>
> Sincerely,
> --
> Didier RICHARD, chef du pôle technique Géoportail pour l'IGN
> Institut Geographique National           tel: +33/0 1.43.98.83.23
> 2/4 Avenue Pasteur                       fax: +33/0 1.43.98.80.88
> F-94165 St-Mande Cedex                e-mail: Didier.Richard at ign.fr
>
> _______________________________________________
> Proj mailing list
> Proj at lists.maptools.org
> http://lists.maptools.org/mailman/listinfo/proj

-- 
Didier RICHARD, chef du pôle technique Géoportail pour l'IGN
Institut Geographique National           tel: +33/0 1.43.98.83.23
2/4 Avenue Pasteur                       fax: +33/0 1.43.98.80.88
F-94165 St-Mande Cedex                e-mail: Didier.Richard at ign.fr