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int usage(int retval, bool brief) {
if (brief)
( retval ? std::cerr : std::cout ) << "Usage:\n"
" CartConvert [ -r ] [ -l lat0 lon0 h0 ] [ -e a f ] [ -w ] [ -p prec ] [\n"
" --comment-delimiter commentdelim ] [ --version | -h | --help ] [\n"
" --input-file infile | --input-string instring ] [ --line-separator\n"
" linesep ] [ --output-file outfile ]\n"
"\n"
"For full documentation type:\n"
" CartConvert --help\n"
"or visit:\n"
" https://geographiclib.sourceforge.io/C++/2.6/CartConvert.1.html\n";
else
( retval ? std::cerr : std::cout ) << "Man page:\n"
" cartesian\n"
"\n"
"SYNOPSIS\n"
" CartConvert [ -r ] [ -l lat0 lon0 h0 ] [ -e a f ] [ -w ] [ -p prec ] [\n"
" --comment-delimiter commentdelim ] [ --version | -h | --help ] [\n"
" --input-file infile | --input-string instring ] [ --line-separator\n"
" linesep ] [ --output-file outfile ]\n"
"\n"
"DESCRIPTION\n"
" Convert geodetic coordinates to either geocentric or local cartesian\n"
" coordinates. Geocentric coordinates have the origin at the center of\n"
" the earth, with the z axis going thru the north pole, and the x axis\n"
" thru latitude = 0, longitude = 0. By default, the conversion is to\n"
" geocentric coordinates. Specifying -l lat0 lon0 h0 causes a local\n"
" coordinate system to be used with the origin at latitude = lat0,\n"
" longitude = lon0, height = h0, z normal to the ellipsoid and y due\n"
" north.\n"
"\n"
" Geodetic coordinates are provided on standard input as a set of lines\n"
" containing (blank separated) latitude, longitude (decimal degrees or\n"
" degrees, minutes and seconds), and height above the ellipsoid (meters);\n"
" for details on the allowed formats for latitude and longitude, see the\n"
" \"GEOGRAPHIC COORDINATES\" section of GeoConvert(1). For each set of\n"
" geodetic coordinates, the corresponding cartesian coordinates x, y, z\n"
" (meters) are printed on standard output.\n"
"\n"
"OPTIONS\n"
" -r perform the reverse projection. x, y, z are given on standard\n"
" input and each line of standard output gives latitude, longitude,\n"
" height. In general there are multiple solutions and the result\n"
" which minimizes the absolute value of height is returned, i.e.,\n"
" (latitude, longitude) corresponds to the closest point on the\n"
" ellipsoid.\n"
"\n"
" -l lat0 lon0 h0\n"
" specifies conversions to and from a local cartesion coordinate\n"
" systems with origin lat0 lon0 h0, instead of a geocentric\n"
" coordinate system. The -w flag can be used to swap the default\n"
" order of the 2 geographic coordinates, provided that it appears\n"
" before -l.\n"
"\n"
" -e a f\n"
" specify the ellipsoid via the equatorial radius, a and the\n"
" flattening, f. Setting f = 0 results in a sphere. Specify f < 0\n"
" for a prolate ellipsoid. A simple fraction, e.g., 1/297, is\n"
" allowed for f. By default, the WGS84 ellipsoid is used, a =\n"
" 6378137 m, f = 1/298.257223563.\n"
"\n"
" -w toggle the longitude first flag (it starts off); if the flag is on,\n"
" then on input and output, longitude precedes latitude (except that,\n"
" on input, this can be overridden by a hemisphere designator, N, S,\n"
" E, W).\n"
"\n"
" -p prec\n"
" set the output precision to prec (default 6). prec is the number\n"
" of digits after the decimal point for geocentric and local\n"
" cartesion coordinates and for the height (in meters). For\n"
" latitudes and longitudes (in degrees), the number of digits after\n"
" the decimal point is prec + 5.\n"
"\n"
" --comment-delimiter commentdelim\n"
" set the comment delimiter to commentdelim (e.g., \"#\" or \"//\"). If\n"
" set, the input lines will be scanned for this delimiter and, if\n"
" found, the delimiter and the rest of the line will be removed prior\n"
" to processing and subsequently appended to the output line\n"
" (separated by a space).\n"
"\n"
" --version\n"
" print version and exit.\n"
"\n"
" -h print usage and exit.\n"
"\n"
" --help\n"
" print full documentation and exit.\n"
"\n"
" --input-file infile\n"
" read input from the file infile instead of from standard input; a\n"
" file name of \"-\" stands for standard input.\n"
"\n"
" --input-string instring\n"
" read input from the string instring instead of from standard input.\n"
" All occurrences of the line separator character (default is a\n"
" semicolon) in instring are converted to newlines before the reading\n"
" begins.\n"
"\n"
" --line-separator linesep\n"
" set the line separator character to linesep. By default this is a\n"
" semicolon.\n"
"\n"
" --output-file outfile\n"
" write output to the file outfile instead of to standard output; a\n"
" file name of \"-\" stands for standard output.\n"
"\n"
"EXAMPLES\n"
" echo 33.3 44.4 6000 | CartConvert\n"
" => 3816209.60 3737108.55 3485109.57\n"
" echo 33.3 44.4 6000 | CartConvert -l 33 44 20\n"
" => 37288.97 33374.29 5783.64\n"
" echo 30000 30000 0 | CartConvert -r\n"
" => 6.483 45 -6335709.73\n"
"\n"
"ERRORS\n"
" An illegal line of input will print an error message to standard output\n"
" beginning with \"ERROR:\" and causes CartConvert to return an exit code\n"
" of 1. However, an error does not cause CartConvert to terminate;\n"
" following lines will be converted.\n"
"\n"
"SEE ALSO\n"
" The algorithm for converting geocentric to geodetic coordinates is\n"
" given in Appendix B of C. F. F. Karney, Geodesics on an ellipsoid of\n"
" revolution, Feb. 2011; preprint <https://arxiv.org/abs/1102.1215>.\n"
"\n"
"AUTHOR\n"
" CartConvert was written by Charles Karney.\n"
"\n"
"HISTORY\n"
" CartConvert was added to GeographicLib,\n"
;
return retval;
}
|
