VERTCON

VERTCON is a computer program that computes the modeled difference in orthometric height between North American Vertical Datum of 1988 (NAVD 88) and the National Geodetic Vertical Datum of 1929 (NGVD 29) for a location in the contiguous United States.[1] The parameters required are the latitude and longitude of the location.

The program was created by the National Geodetic Survey (NGS) and is available as an online tool,[2] or PC executable package.[3] The package contains the Perl source code. The NGS is the government agency charged with responsibility for the National Spatial Reference System.[4]

References

  1. ^ "National Geodetic Survey (NGS) Height Conversion Methodology". National Geodetic Survey. http://www.ngs.noaa.gov/TOOLS/Vertcon/vert_method.html. 
  2. ^ "VERTCON". National Geodetic Survey. http://www.ngs.noaa.gov/cgi-bin/VERTCON/vert_con.prl. 
  3. ^ "PC Software Download - VERTCON". National Geodetic Survey. http://www.ngs.noaa.gov/PC_PROD/VERTCON/. 
  4. ^ "NGS Toolkit, Part 9: The National Geodetic Survey VERTCON Tool". Professional Surveyor Magazine. http://www.profsurv.com/magazine/article.aspx?i=1214.