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Mancs2cs
Micah Cochran edited this page Feb 19, 2016
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CS2CS(1) General Commands Manual CS2CS(1)
NAME
cs2cs - cartographic coordinate system filter
SYNOPSIS
cs2cs [ -eEfIlrstvwW [ args ] ] [ +opts[=arg] ]
[ +to [+opts[=arg]] ] file[s]
DESCRIPTION
Cs2cs performs transformation between the source
and destination cartographic coordinate system
on a set of input points. The coordinate system
transformation can include translation between
projected and geographic coordinates as well as
the application of datum shifts.
The following control parameters can appear in
any order:
-I method to specify inverse translation,
convert from +to coordinate system to the
primary coordinate system defined.
-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 out‐
put if an error is detected during data
transformations. The default value is:
*\t*. Note that if the -b, -i or -o
options are employed, an error is
returned as HUGE_VAL value for both
return values.
-E causes the input coordinates to be copied
to the output line prior to printing the
converted values.
-l[p|P|=|e|u|d]id
List projection identifiers with -l, -lp
or -lP (expanded) that can be selected
with +proj. -l=id gives expanded
description of projection id. List
ellipsoid identifiers with -le, that can
be selected with +ellps, -lu list of
cartesian to meter conversion factors
that can be selected with +units or -ld
list of datums that can be selected with
+datum.
-r This options reverses the order of the
expected input from longitude-latitude or
x-y to latitude-longitude or y-x.
-s This options reverses the order of the
output from x-y or longitude-latitude to
y-x or latitude-longitude.
-f format
Format is a printf format string to con‐
trol 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 pro‐
jection the output data will be in deci‐
mal 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.
-v causes a listing of cartographic control
parameters tested for and used by the
program to be printed prior to input
data.
The +args run-line arguments are associated with
cartographic parameters and usage varies with
projection and for a complete description see
Cartographic Projection Procedures for the UNIX
Environment—A User's Manual and supplementary
documentation for Release 4.
The cs2cs program requires two coordinate system
definitions. The first (or primary is defined
based on all projection parameters not appearing
after the +to argument. All projection parame‐
ters appearing after the +to argument are con‐
sidered the definition of the second coordinate
system. If there is no second coordinate system
defined, a geographic coordinate system based on
the datum and ellipsoid of the source coordinate
system is assumed. Note that the source and
destination coordinate system can both be pro‐
jections, both be geographic, or one of each and
may have the same or different datums.
Additional projection control parameters may be
contained in two auxiliary control files: the
first is optionally referenced with the
+init=file:id and the second is always processed
after the name of the projection has been estab‐
lished from either the run-line or the contents
of +init file. The environment parameter
PROJ_LIB establishes the default directory for a
file reference without an absolute path. This
is also used for supporting files like datum
shift files.
One or more files (processed in left to right
order) specify the source of data to be trans‐
formed. A - will specify the location of pro‐
cessing standard input. If no files are speci‐
fied, the input is assumed to be from stdin.
For 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 trail‐
ing portions of the input line are appended to
the output line.
Input geographic data (longitude and latitude)
must be in DMS or decimal degrees format and
input cartesian data must be in units consistent
with the ellipsoid major axis or sphere radius
units. Output geographic coordinates will nor‐
mally be in DMS format (use -f %.12f for decimal
degrees with 12 decimal places), while projected
(cartesian) coordinates will be in linear
(meter, feet) units.
EXAMPLE
The following script
cs2cs +proj=latlong +datum=NAD83
+to +proj=utm +zone=10 +datum=NAD27
-r <<EOF
45d15'33.1" 111.5W
45d15.551666667N -111d30
+45.25919444444 111d30'000w
EOF
will transform the input NAD83 geographic coor‐
dinates into NAD27 coordinates in the UTM pro‐
jection with zone 10 selected. The geographic
values of this example are equivalent and meant
as examples of various forms of DMS input. The
x-y output data will appear as three lines of:
1402285.99 5076292.42 0.000
SEE ALSO
proj(1),
Cartographic Projection Procedures for the UNIX
Environment—A User's Manual, (Evenden, 1990,
Open-file report 90-284).
Map Projections Used by the U. S. Geological
Survey (Snyder, 1984, USGS Bulletin 1532).
Map Projections—A Working Manual (Snyder, 1988,
USGS Prof. Paper 1395).
An Album of Map Projections (Snyder & Voxland,
1989, USGS Prof. Paper 1453).
HOME PAGE
https://github.com/OSGeo/proj.4/wiki
2000/03/21 Rel. 4.4 CS2CS(1)