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<DIV dir=ltr><FONT face="Times New Roman" color=#000000 size=2>Contact Mr. David Doyle, Chief Geodesist at the National Geodetic Survey for an official copy of the suite of Fortran source code at: <A href="mailto:Dave.Doyle@noaa.gov"><FONT size=3>Dave.Doyle@noaa.gov</FONT></A> 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.</FONT></DIV>
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<DIV dir=ltr><FONT size=2>However, I am pretty confident that they have not developed a tranlator <STRONG>from </STRONG>NTV2 <STRONG>to </STRONG>NADCON since the latter is the senior technique developed by LTCDR Warren Dewhurst for his dissertation at Ohio State University in the early 1980s.</FONT></DIV>
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<DIV dir=ltr><FONT size=2>Bon chance,</FONT></DIV>
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<DIV dir=ltr><SPAN style="FONT-SIZE: 10pt">Clifford J. Mugnier, C.P., C.M.S.<BR>Past National Director (2006-2008),<BR>Photogrammetric Applications Division<BR>American Society for Photogrammetry and Remote Sensing <BR>and <BR>Chief of Geodesy,<BR>CENTER FOR GEOINFORMATICS <BR>Department of Civil Engineering <BR>Patrick F. Taylor Hall 3223A<BR>LOUISIANA STATE UNIVERSITY <BR>Baton Rouge, LA 70803<BR>Voice and Facsimile: (225) 578-8536 [Academic] <BR>Voice and Facsimile: (225) 578-8925 [Research] <BR>Honorary Life Member of the <BR>Louisiana Society of Professional Surveyors <BR>Member Emeritus of the ASPRS <BR>Member of the Americas Petroleum Survey Group<BR>======================================================<BR></SPAN><A href="https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.lsu.edu/exchweb/bin/redir.asp?URL=https://email.ls" target=_blank><SPAN style="FONT-SIZE: 10pt">http://www.asprs.org/resources/GRIDS/</SPAN></A><BR><SPAN style="FONT-SIZE: 10pt">======================================================</SPAN></DIV></DIV>
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<FONT face=Tahoma size=2><B>From:</B> proj-bounces@lists.maptools.org on behalf of Richard didier<BR><B>Sent:</B> Wed 09-Sep-09 04:04<BR><B>To:</B> proj@lists.maptools.org<BR><B>Subject:</B> [Proj] NADCON spec<BR></FONT><BR></DIV>
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<P><FONT size=2>Hi all,<BR><BR>I need to produce NADCON grid from our NTV2 grid.<BR><BR>I have searched the web for NADCON grids specs and only found that a NADCON<BR>grid is a bundle including the data AND the software that reads them ... I,<BR>also, found that there are two files needed (one for longitudes, another one<BR>for latitudes) and that longitudes/latitudes must be round even values ...<BR>But, I am not sure of all of that.<BR><BR>On the other hand, PROJ.4 includes a reader for converting lla (ascii) to<BR>binary ... and lla is mentioned in some web pages.<BR><BR>So, is there "real" specifications for NADCON Grids ? and could someone point<BR>me to them ?<BR><BR>Sincerely,<BR>--<BR>Didier RICHARD, chef du pôle technique Géoportail pour l'IGN<BR>Institut Geographique National tel: +33/0 1.43.98.83.23<BR>2/4 Avenue Pasteur fax: +33/0 1.43.98.80.88<BR>F-94165 St-Mande Cedex e-mail: Didier.Richard@ign.fr<BR><BR>_______________________________________________<BR>Proj mailing list<BR>Proj@lists.maptools.org<BR><A href="http://lists.maptools.org/mailman/listinfo/proj">http://lists.maptools.org/mailman/listinfo/proj</A><BR></FONT></P></DIV></BODY></HTML>