NAD2BIN(1) General Commands Manual NAD2BIN(1)
nad2bin – convert nad ASCII files into binary format usable by nad2nad
This command is undocumented upstream. This very rough documentation
was quickly assembled by your friendly Debian maintainer (who doesn’t
use this command, and so is not the best person to document it!).
The proj package includes the nad2nad binary, the North American Datum
conversion filter used to convert data between North America Datum 1927
(NAD27) and North American Datum 1983, and cs2cs a binary that performs
transformation between the source and destination cartographic coordi‐
nate system on a set of input points. The coordinate system transfor‐
mation can include translation between projected and geographic coordi‐
nates as well as the application of datum shifts.
See the nad2nad(1) and cs2cs man pages for more information.
nad2nad and cs2cs need arch-dependent conversion data files in a
library directory, /usr/share/proj/ Those files are included in the
proj Debian package since 4.6.1-5. To produce/update them yourself,
get the *.lla files from
and then run nad2bin to produce the binary files used by nad2nad and
cs2cs like so:
# nad2bin < conus.lla /usr/share/proj/conus Test nad2nad with the following example: $ nad2nad -i 83 -o 27 -r conus << EOF 71d14'58.27"W 44d20'15.227"N EOF It should produce: 71d15'W 44d20'15"N
This manual page by Peter S Galbraith