2011

Table Of Contents
DescriptionFile
QLD_1299.gsb. Default fallback datum:
ASTRLA84-7P.
Grid Data Catalog file for determining the
geoid height for any position in the United
GeoidHeight.gdc
States. Default data files are
GEO96AN.GEO, GEO96AS.GEO,
GEO96HW.GEO, GEO96NC.GEO,
GEO96NE.GEO, GEO96NW.GEO,
GEO96PR.GEO, GEO96SC.GEO,
GEO96SE.GEO, and GEO96SW.GEO. Fall-
back datum definition is not recommen-
ded.
Grid Data Catalog file for transformations
within North America. Default data files:
Nad27ToNad83.gdc
Conus.l?s, Alaska.l?s, PrVi.l?s, Hawaii.l?s,
STGEORGE.l?s, STLRNC.l?s, and ST-
PAUL.l?s. Default fallback datum: NAD27-
48.
Grid Data Catalog file for transformations
within North America. Default grid data
Nad83ToHarn.gdc
files: alhpgn.l?s, azhpgn.l?s, cnhpgn.l?s,
cohpgn.l?s, cshpgn.l?s, emhpgn.l?s, ethp-
gn.l?s, flhpgn.l?s, gahpgn.l?s, hihpgn.l?s,
kshpgn.l?s, kyhpgn.l?s, lahpgn.l?s, mdhp-
gn.l?s, mehpgn.l?s, mihpgn.l?s, mshp-
gn.l?s, nbhpgn.l?s, ndhpgn.l?s, nehpgn.l?s,
nmhpgn.l?s, nvhpgn.l?s, nyhpgn.l?s, ohh-
pgn.l?s, okhpgn.l?s, pvhpgn.l?s, sdhp-
gn.l?s, tnhpgn.l?s, uthpgn.l?s, vahpgn.l?s,
wihpgn.l?s, wmhpgn.l?s, wohpgn.l?s,
wthpgn.l?s, wvhpgn.l?s, and wyhpgn.l?s.
Fallback datum definition is not recommen-
ded.
Grid Data Catalog file for transformations
within New Zealand. Default grid data file:
Nzgd49ToNzgd2K.gdc
nzgd2kgrid9911.gsb. Default fallback
datum: NZGD49-7P.
114 | Chapter 2 Setting Up