Parent Topic: <A href="http://www.pcigeomatics.com/cgi-bin/pcihlp/PROJ|EARTH+MODELS|DATUMS|GRID+SHIFT+FILES">GRID SHIFT FILES</a><hr>
<br><b>NADCON files</b><br>
There are three sets of the U.S. NADCON (North American Datum Conversion)
grid-shift files provided in the $PCIHOME/etc directory:
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<PRE>
 Datum   Datum Name                                       Ellipsoid
 Code      Location                                       used
             (File in $PCIHOME/etc)
               Area covered

 &quot;D-01&quot;  NAD27 (USA, NADCON)                              &quot;E000&quot;
           Continental U.S.                                Clarke 1866
             (&quot;conus.los&quot;, &quot;conus.las&quot;)
               Longitudes:  63d W to 131d W;
               Latitudes:   20d N to  50d N;
               Resolution:  15 minutes

 &quot;D-02&quot;  NAD83 (USA, NADCON)                              &quot;E008&quot;
           Continental U.S.                                GRS 1980
             (&quot;conus.los&quot;, &quot;conus.las&quot;)
               Longitudes:  63d W to 131d W;
               Latitudes:   20d N to  50d N
               Resolution:  15 minutes

 &quot;D-05&quot;  NAD27 (USA, NADCON)                              &quot;E000&quot;
           Alaska                                          Clarke 1866
             (&quot;alaska.los&quot;, &quot;alaska.las&quot;)
               Longitudes: 128d W to 169d W;
               Latitudes:   50d N to  74d N

 &quot;D-06&quot;  NAD83 (USA, NADCON)                              &quot;E008&quot;
           Alaska                                          GRS 1980
             (&quot;alaska.los&quot;, &quot;alaska.las&quot;)
               Longitudes: 128d W to 169d W;
               Latitudes:   50d N to  74d N

 &quot;D-07&quot;  Old Hawaiian (USA, NADCON)                       &quot;E000&quot;
           Hawaii                                          Clarke 1866
             (&quot;hawaii.los&quot;, &quot;hawaii.las&quot;)
               Longitudes: 154d W to 161d W;
               Latitudes:   18d N to  23d N

 &quot;D-08&quot;  NAD83 (USA, NADCON)                              &quot;E008&quot;
           Hawaii                                          GRS 1980
             (&quot;hawaii.los&quot;, &quot;hawaii.las&quot;)
               Longitudes: 154d W to 161d W;
               Latitudes:   18d N to  23d N
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Other NADCON files (e.g. for Puerto Rico and the Vigin Islands;
the Alaskan islands of St. George, St. Lawrence, and St.Paul)
are available on the Internet at ftp://ftp.ngs.noaa.gov/pub/pcsoft/nadcon
or by FTP at ftp.ngs.noaa.gov in the pub/pcsoft/nadcon subdirectory.
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Parent Topic: <A href="http://www.pcigeomatics.com/cgi-bin/pcihlp/PROJ|EARTH+MODELS|DATUMS|GRID+SHIFT+FILES">GRID SHIFT FILES</a><br>
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