NAD2NAD(1)                                                    General Commands Manual                                                   NAD2NAD(1)

NAME

       nad2nad - North American Datum conversion filter

SYNOPSIS

       nad2nad [ -eEfihortwW [ args ] ] [ +args ] file[s]

DESCRIPTION

       Program nad2nad is a filter to convert data between North America Datum 1927 (NAD27) and North American Datum 1983.  nad2nad can optionally
       process both State Plane Coordinate System (SPCS) and Universal Transverse Mercator (UTM) grid data as well as  geographic  data  for  both
       input and output.  This can also be accomplished with the cs2cs program.

       The following control parameters can appear in any order:

       -[i|o] keyword[,keyword]
              The  -i  and  -o  option  expect keyword arguments which define various characteristics and processing modes of the respective input
              data.  Usage allows multiple arguments to be included with a - operator when separated by commas.   Datum  conversion  requires  the
              data to be in geographic coordinates, but nad2nad will allow conversion of data to and from SPCS or UTM grid systems.  The following
              are keywords and arguments recognized by both the -i and -o that will apply to respective input and output conversion of  user  data
              to internal geographic coordinates:

                 27|83  datum of data

                 utm=n  UTM coordinates in meters for zone n

                 spcs=n for data in SPCS coordinates, where n is state zone number.

                 feet   data  units are in U.S. Surveyor's feet.  This is allowed only when the spcs option been previously used.  Default coordi-
                        nates are in meters.

                 bin    for data in binary form.

                 rev    data in lat-lon order rather than default lon-lat order.

                 hp=ss  use high precision conversion zone ss.  Certain States have ancillary correction tables to further refine the basic  conus
                        table.  Ss key and States are:
                      FL Florida
                      MD Maryland
                      TN Tennessee
                      WI Wisconsin
                      WO Washington, Oregon and northern part of California.

       -ta    A  specifies  a  character  employed  as the first character to denote a control line to be passed through without processing.  This
              option applicable to ascii input only.  (# is the default value).

       -e string
              String is an arbitrary string to be output if an error is detected during data transformations.  The default value is:  *	*.   Note
              that if the -o bin option is employed, an error is output as HUGE_VAL for both values.

       -r region
              specifies which regional conversion table to employ which are identified by the following:
            conus - conterminous 48 States
            alaska - State of Alaska
            hawaii - State of Hawaii
            prvi - Puerto Rico and Virgin Islands
            stgeorge - St. George Is, Alaska
            stpaul - St. Paul Is, Alaska
            stlrnc - St. Lawrence Is, Alaska

            -E     Input coordinates are echoed to output before ouput values.

       -f format
              Format  is  a printf format string to control the form of the output values.  For inverse projections, the output will be in degrees
              when this option is employed.  If a format is specified for inverse projection the output data will  be  in  decimal  degrees.   The
              default format is %.2f for forward projection and DMS for inverse.

       -[w|W]n
              N  is  the  number of significant fractional digits to employ for seconds output (when the option is not specified, -w3 is assumed).
              When -W is employed the fields will be constant width and with leading zeroes.

       One or more files (processed in left to right order) specify the source of data to be transformed.  A - will specify the location  of  pro-
       cessing  standard  input.  If no files are specified, the input is assumed to be from stdin.  For ASCII input data the two data values must
       be in the first two white space separated fields and when both input and output are ASCII all trailing  portions  of  the  input  line  are
       appended to the output line.

       Input  geographic  data  (longitude and latitude) must be in DMS format when neither utm nor spcs is specified, otherwise in meters or feet
       (feet option used).  Input data fields must be separated by white space and not have imbedded white space.

       Output data will be in tab separated fields of DMS or grid coordinates in meters or feet.

       Any data after the two input values are echoed after the two output data values.

SEE ALSO

       cs2cs(1U), proj(1U),
       Cartographic Projection Procedures for the UNIX Environment--A User's Manual, (Evenden, 1990, Open-file report 90-284).

HOME PAGE

       http://www.remotesensing.org/proj

                                                                2000/03/21 Rel. 4.4                                                     NAD2NAD(1)