1CS2CS(1) PROJ.4 CS2CS(1)
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6 cs2cs - Cartographic coordinate system filter
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9 cs2cs [ -eEfIlrstvwW [ args ] ] [ +opts[=arg] ] [ +to [+opts[=arg]]
10 ] file[s]
11
13 cs2cs performs transformation between the source and destination carto‐
14 graphic coordinate system on a set of input points. The coordinate sys‐
15 tem transformation can include translation between projected and geo‐
16 graphic coordinates as well as the application of datum shifts.
17 The following control parameters can appear in any order:
19 -I Method to specify inverse translation, convert from +to coordi‐
21 nate system to the primary coordinate system defined.
22 -t<a> Where a specifies a character employed as the first character to
24 denote a control line to be passed through without processing.
25 This option applicable to ASCII input only. (# is the default
26 value).
27 -d <n>
29 New in version 5.2.0: Specify the number of decimals in the output.
31 -e <string>
34 Where string is an arbitrary string to be output if an error is
35 detected during data transformations. The default value is a
36 three character string: *\t*.
37 -E Causes the input coordinates to be copied to the output line
39 prior to printing the converted values.
40 -l<[=id]>
42 List projection identifiers that can be selected with +proj.
43 cs2cs -l=id gives expanded description of projection id, e.g.
44 cs2cs -l=merc.
45 -lp List of all projection id that can be used with the +proj param‐
47 eter. Equivalent to cs2cs -l.
48 -lP Expanded description of all projections that can be used with
50 the +proj parameter.
51 -le List of all ellipsoids that can be selected with the +ellps
53 parameters.
54 -lu List of all distance units that can be selected with the +units
56 parameter.
57 -ld List of datums that can be selected with the +datum parameter.
59 -r This options reverses the order of the expected input from lon‐
61 gitude-latitude or x-y to latitude-longitude or y-x.
62 -s This options reverses the order of the output from x-y or longi‐
64 tude-latitude to y-x or latitude-longitude.
65 -f <format>
67 Where format is a printf format string to control the form of
68 the output values. For inverse projections, the output will be
69 in degrees when this option is employed. If a format is speci‐
70 fied for inverse projection the output data will be in decimal
71 degrees. The default format is "%.2f" for forward projection and
72 DMS for inverse.
73 -w<n> Where n is the number of significant fractional digits to employ
75 for seconds output (when the option is not specified, -w3 is
76 assumed).
77 -W<n> Where n is the number of significant fractional digits to employ
79 for seconds output. When -W is employed the fields will be con‐
80 stant width with leading zeroes.
81 -v Causes a listing of cartographic control parameters tested for
83 and used by the program to be printed prior to input data.
84 The +args run-line arguments are associated with cartographic parame‐
86 ters.
87 The cs2cs program requires two coordinate system definitions. The first
89 (or primary is defined based on all projection parameters not appearing
90 after the +to argument. All projection parameters appearing after the
91 +to argument are considered the definition of the second coordinate
92 system. If there is no second coordinate system defined, a geographic
93 coordinate system based on the datum and ellipsoid of the source coor‐
94 dinate system is assumed. Note that the source and destination coordi‐
95 nate system can both be projections, both be geographic, or one of each
96 and may have the same or different datums.
97 Additional projection control parameters may be contained in two auxil‐
99 iary control files: the first is optionally referenced with the
100 +init=file:id and the second is always processed after the name of the
101 projection has been established from either the run-line or the con‐
102 tents of +init file. The environment parameter PROJ_LIB establishes the
103 default directory for a file reference without an absolute path. This
104 is also used for supporting files like datum shift files.
105 One or more files (processed in left to right order) specify the source
107 of data to be transformed. A - will specify the location of processing
108 standard input. If no files are specified, the input is assumed to be
109 from stdin. For input data the two data values must be in the first
110 two white space separated fields and when both input and output are
111 ASCII all trailing portions of the input line are appended to the out‐
112 put line.
113 Input geographic data (longitude and latitude) must be in DMS or deci‐
115 mal degrees format and input cartesian data must be in units consistent
116 with the ellipsoid major axis or sphere radius units. Output geographic
117 coordinates will normally be in DMS format (use -f %.12f for decimal
118 degrees with 12 decimal places), while projected (cartesian) coordi‐
119 nates will be in linear (meter, feet) units.
120
122 The following script
123 cs2cs +proj=latlong +datum=NAD83 +to +proj=utm +zone=10 +datum=NAD27 -r <<EOF
125 45d15'33.1" 111.5W
126 45d15.551666667N -111d30
127 +45.25919444444 111d30'000w
128 EOF
129 will transform the input NAD83 geographic coordinates into NAD27 coor‐
131 dinates in the UTM projection with zone 10 selected. The geographic
132 values of this example are equivalent and meant as examples of various
133 forms of DMS input. The x-y output data will appear as three lines of:
134 1402285.98 5076292.42 -0.00
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138 proj(1), cct(1), geod(1), gie(1)
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141 A list of know bugs can be found at
142 https://github.com/OSGeo/proj.4/issues where new bug reports can be
143 submitted to.
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146 https://proj4.org/
147
149 Frank Warmerdam
150
152 1983-2018
1535.2.0 Sep 10, 2018 CS2CS(1)