/usr/share/doc/gmt/html/man/x2sys_list.html is in gmt-doc 4.5.12-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 | <!-- Creator : groff version 1.22.2 -->
<!-- CreationDate: Thu Feb 27 18:15:40 2014 -->
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta name="generator" content="groff -Thtml, see www.gnu.org">
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<meta name="Content-Style" content="text/css">
<style type="text/css">
p { margin-top: 0; margin-bottom: 0; vertical-align: top }
pre { margin-top: 0; margin-bottom: 0; vertical-align: top }
table { margin-top: 0; margin-bottom: 0; vertical-align: top }
h1 { text-align: center }
</style>
<title>X2SYS_LIST</title>
</head>
<body bgcolor="#ffffff">
<h1 align="center">X2SYS_LIST</h1>
<a href="#NAME">NAME</a><br>
<a href="#SYNOPSIS">SYNOPSIS</a><br>
<a href="#DESCRIPTION">DESCRIPTION</a><br>
<a href="#OPTIONS">OPTIONS</a><br>
<a href="#EXAMPLES">EXAMPLES</a><br>
<a href="#SEE ALSO">SEE ALSO</a><br>
<hr>
<h2>NAME
<a name="NAME"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">x2sys_list
− Output a subset of crossovers from data base</p>
<h2>SYNOPSIS
<a name="SYNOPSIS"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em"><b>x2sys_list
−C</b><i>column</i> <b>−T</b><i>TAG</i> [
<i>coedbase.txt</i> ] [ <b>−A</b><i>asymm_max</i> ] [
<b>−F</b><i>acdhiInNtTvwxyz</i> ] [
<b>−I</b>[<i>list</i>] ] [
<b>−L</b>[<i>corrtable</i>] ] [
<b>−N</b><i>nx_min</i> ] [ <b>−Qe</b>|<b>i</b> ]
[
<b>−R</b><i>west</i>/<i>east</i>/<i>south</i>/<i>north</i>[<b>r</b>]
] [ <b>−S</b>[<b>+</b>]<i>track</i> ] [
<b>−V</b> ] [ <b>−W</b>[<i>list</i>] ] [
<b>−bo</b>[<b>s</b>|<b>S</b>|<b>d</b>|<b>D</b>[<i>ncol</i>]|<b>c</b>[<i>var1</i><b>/</b><i>...</i>]]
] [ <b>−m</b>[<i>flag</i>] ]</p>
<h2>DESCRIPTION
<a name="DESCRIPTION"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em"><b>x2sys_list</b>
will read the crossover ASCII data base <i>coedbase.txt</i>
(or <i>stdin</i>) and extract a subset of the crossovers
based on the other arguments. The output may be ASCII or
binary.</p>
<table width="100%" border="0" rules="none" frame="void"
cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p><b>−C</b></p></td>
<td width="8%"></td>
<td width="78%">
<p>Specify which data column you want to process.
Crossovers related to this column name must be present in
the crossover data base.</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p><b>−T</b></p></td>
<td width="8%"></td>
<td width="78%">
<p>Specify the x2sys <i>TAG</i> which tracks the attributes
of this data type.</p></td></tr>
</table>
<h2>OPTIONS
<a name="OPTIONS"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">No space
between the option flag and the associated arguments.
<i><br>
coedbase.txt</i></p>
<p style="margin-left:22%;">The name of the input ASCII
crossover error data base as produced by <b><A HREF="x2sys_cross.html">x2sys_cross</A></b>.
If not given we read standard input instead.</p>
<table width="100%" border="0" rules="none" frame="void"
cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p><b>−A</b></p></td>
<td width="7%"></td>
<td width="78%">
<p>Specifies maximum asymmetry in the distribution of
crossovers relative to the mid point in time (or distance,
if time is not available). Asymmetry is computed as (n_right
- n_left)/(n_right + n_left), referring the the number of
crossovers that falls in the left or right half of the
range. Symmetric distributions will have values close to
zero. If specified, we exclude tracks whose asymmetry
exceeds the specify cutoff in absolute value [1, i.e.,
include all].</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p><b>−F</b></p></td>
<td width="7%"></td>
<td width="78%">
<p>Specify your desired output using any combination of
<i>acdhiInNtTvwxyz</i>, in any order. Do not use space
between the letters, and note your selection is
case-sensitive. The output will be ASCII (or binary, see
<b>−bo</b>) columns of values. Description of codes:
<b>a</b> is the angle (< 90) defined by the crossing
tracks, <b>c</b> is crossover value of chosen observation
(see <b>−C</b>), <b>d</b> is distance along track,
<b>h</b> is heading along track, <b>i</b> is the signed time
interval between the visit at the crossover of the two
tracks involved, <b>I</b> is same as <b>i</b> but is
unsigned, <b>n</b> is the names of the two tracks, <b>N</b>
is the id numbers of the two tracks, <b>t</b> is time along
track in <i>date</i><b>T</b><i>clock</i> format (NaN if not
available), <b>T</b> is elapsed time since start of track
along track (NaN if not available), <b>v</b> is speed along
track, <b>w</b> is the composite weight, <b>x</b> is
<i>x</i>-coordinate (or longitude), <b>y</b> is
<i>y</i>-coordinate (or latitude), and <b>z</b> is observed
value (see <b>−C</b>) along track. If <b>−S</b>
is not specified then <b>d,h,n,N,t,T,v</b> results in two
output columns each: first for track one and next for track
two (in lexical order of track names); otherwise, they refer
to the specified track only (except for <b>n,N</b> which
then refers to the other track). The sign convention for
<b>c,i</b> is track one minus track two (lexically sorted).
Time intervals will be returned according to the
<b><A HREF="gmtdefaults.html#TIME_UNIT">TIME_UNIT</A></b> GMT defaults setting.</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p><b>−I</b></p></td>
<td width="7%"></td>
<td width="78%">
<p>Name of ASCII file with a list of track names (one per
record) that should be excluded from consideration [Default
includes all tracks].</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p><b>−L</b></p></td>
<td width="7%"></td>
<td width="78%">
<p>Apply optimal corrections to the chosen observable.
Append the correction table to use [Default uses the
correction table <i>TAG</i>_corrections.txt which is
expected to reside in the <b>$X2SYS_HOME</b>/<i>TAG</i>
directory]. For the format of this file, see
<b><A HREF="x2sys_solve.html">x2sys_solve</A></b>.</p> </td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p><b>−N</b></p></td>
<td width="7%"></td>
<td width="78%">
<p>Only report data from pairs that generated at least
<i>nx_min</i> crossovers between them [use all pairs].</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p><b>−Q</b></p></td>
<td width="7%"></td>
<td width="78%">
<p>Append <b>e</b> for external crossovers or <b>i</b> for
internal crossovers only [Default is all crossovers].</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p><b>−R</b></p></td>
<td width="7%"></td>
<td width="78%">
<p><i>west, east, south,</i> and <i>north</i> specify the
Region of interest, and you may specify them in decimal
degrees or in [+-]dd:mm[:ss.xxx][W|E|S|N] format. Append
<b>r</b> if lower left and upper right map coordinates are
given instead of w/e/s/n. The two shorthands
<b>−Rg</b> and <b>−Rd</b> stand for global
domain (0/360 and -180/+180 in longitude respectively, with
-90/+90 in latitude). Alternatively, specify the name of an
existing grid file and the <b>−R</b> settings (and
grid spacing, if applicable) are copied from the grid. For
Cartesian data just give <i>xmin/xmax/ymin/ymax</i>. This
option limits the COEs to those that fall inside the
specified domain.</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p><b>−S</b></p></td>
<td width="7%"></td>
<td width="78%">
<p>Name of a single track. If given we restrict output to
those crossovers involving this track [Default output is
crossovers involving any track pair]. Prepend a
’+’ to make it print info relative to both
tracks [Default is selected track]. This applies only to
common information such as distance, time, heading (see
<b>−F</b> for details).</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p><b>−V</b></p></td>
<td width="7%"></td>
<td width="78%">
<p>Selects verbose mode, which will send progress reports
to stderr [Default runs "silently"].</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p><b>−W</b></p></td>
<td width="7%"></td>
<td width="78%">
<p>Name of ASCII file with a list of track names and their
relative weights (one track per record) that should be used
to calculate the composite crossover weight (output code
<b>w</b> above). [Default sets weights to 1].</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p><b>−bo</b></p></td>
<td width="7%"></td>
<td width="78%">
<p>Selects binary output. Append <b>s</b> for single
precision [Default is <b>d</b> (double)]. Uppercase <b>S</b>
or <b>D</b> will force byte-swapping. Optionally, append
<i>ncol</i>, the number of desired columns in your binary
output file.</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="4%">
<p><b>−m</b></p></td>
<td width="7%"></td>
<td width="78%">
<p>Multiple segment output format. Segments with crossovers
for a single track pair are separated by a record whose
first character is <i>flag</i> and contains the two track
names. [Default is ’>’].</p></td></tr>
</table>
<h2>EXAMPLES
<a name="EXAMPLES"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">To find all the
magnetic crossovers associated with the tag MGD77 from the
file COE_data.txt, restricted to occupy a certain region in
the south Pacific, and return location, time, and crossover
value, try</p>
<p style="margin-left:11%; margin-top: 1em"><b>x2sys_list</b>
COE_data.txt <b>−V −T</b> MGD77 <b>−R</b>
180/240/-60/-30 <b>−C</b> mag <b>−F</b> xytz
> mag_coe.txt</p>
<p style="margin-left:11%; margin-top: 1em">To find all the
faa crossovers globally that involves track 12345678 and
output time since start of the year, using a binary double
precision format, try</p>
<p style="margin-left:11%; margin-top: 1em"><b>x2sys_list</b>
COE_data.txt <b>−V −T</b> MGD77 <b>−C</b>
faa <b>−S</b> 12345678 <b>−F</b> Tz
<b>−bod</b> > faa_coe.b</p>
<h2>SEE ALSO
<a name="SEE ALSO"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em"><i><A HREF="x2sys_binlist.html">x2sys_binlist</A></i>(1),
<i><A HREF="x2sys_cross.html">x2sys_cross</A></i>(1), <i><A HREF="x2sys_datalist.html">x2sys_datalist</A></i>(1),
<i><A HREF="x2sys_get.html">x2sys_get</A></i>(1), <i><A HREF="x2sys_init.html">x2sys_init</A></i>(1),
<i><A HREF="x2sys_put.html">x2sys_put</A></i>(1), <i><A HREF="x2sys_report.html">x2sys_report</A></i>(1),
<i><A HREF="x2sys_solve.html">x2sys_solve</A></i>(1)</p>
<hr>
</body>
</html>
|