1X2SYS_REPORT(1) GMT X2SYS_REPORT(1)
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6 x2sys_report - Report statistics from crossover data base
7
9 x2sys_report -Ccolumn -TTAG [ coedbase.txt ] [ -A ] [ -I[list] ] [
10 -L[corrtable] ] [ -Nnx_min ] [ -Qe|i ] [ [ -Rregion ] [ -Strack ] [
11 -V[level] ]
12 Note: No space is allowed between the option flag and the associated
14 arguments.
15
17 x2sys_report will read the input crossover ASCII data base coedbase.txt
18 (or stdin) and report on the statistics of crossovers (n, mean, stdev,
19 rms, weight) for each track. Options are available to let you exclude
20 tracks and limit the output.
21
23 coedbase.txt
24 The name of the input ASCII crossover error data base as pro‐
25 duced by x2sys_cross. If not given we read standard input
26 instead.
27 -Ccolumn
29 Specify which data column you want to process. Crossovers
30 related to this column name must be present in the crossover
31 data base.
32 -TTAG Specify the x2sys TAG which tracks the attributes of this data
34 type.
35
37 -A Eliminate COEs by distributing the COE between the two tracks in
38 proportion to track weight and producing (dist, adjustment)
39 spline knots files for each track (for the selected column).
40 Such adjustments may be used by x2sys_datalist. The adjustment
41 files are called track.column.adj and are placed in the
42 $X2SYS_HOME/TAG directory. For background information on how
43 these adjustments are designed, see Mittal [1984].
44 -I[list]
46 Name of ASCII file with a list of track names (one per record)
47 that should be excluded from consideration [Default includes all
48 tracks].
49 -L[corrtable]
51 Apply optimal corrections to the chosen observable. Append the
52 correction table to use [Default uses the correction table
53 TAG_corrections.txt which is expected to reside in the
54 $X2SYS_HOME/TAG directory]. For the format of this file, see
55 x2sys_solve.
56 -Nnx_min
58 Only report data from tracks involved in at least nx_min
59 crossovers [all tracks].
60 -Qe|i Append e for external crossovers or i for internal crossovers
62 only [Default is external].
63 -Rwest/east/south/north[/zmin/zmax][+r][+uunit]
65 west, east, south, and north specify the region of interest, and
66 you may specify them in decimal degrees or in
67 [±]dd:mm[:ss.xxx][W|E|S|N] format Append +r if lower left and
68 upper right map coordinates are given instead of w/e/s/n. The
69 two shorthands -Rg and -Rd stand for global domain (0/360 and
70 -180/+180 in longitude respectively, with -90/+90 in latitude).
71 Alternatively for grid creation, give Rcodelon/lat/nx/ny, where
72 code is a 2-character combination of L, C, R (for left, center,
73 or right) and T, M, B for top, middle, or bottom. e.g., BL for
74 lower left. This indicates which point on a rectangular region
75 the lon/lat coordinate refers to, and the grid dimensions nx and
76 ny with grid spacings via -I is used to create the corresponding
77 region. Alternatively, specify the name of an existing grid
78 file and the -R settings (and grid spacing, if applicable) are
79 copied from the grid. Appending +uunit expects projected (Carte‐
80 sian) coordinates compatible with chosen -J and we inversely
81 project to determine actual rectangular geographic region. For
82 perspective view (-p), optionally append /zmin/zmax. In case of
83 perspective view (-p), a z-range (zmin, zmax) can be appended to
84 indicate the third dimension. This needs to be done only when
85 using the -Jz option, not when using only the -p option. In the
86 latter case a perspective view of the plane is plotted, with no
87 third dimension. For Cartesian data just give
88 xmin/xmax/ymin/ymax. This option bases the statistics on those
89 COE that fall inside the specified domain.
90 -Strack
92 Name of a single track. If given we restrict output to those
93 crossovers involving this track [Default output is crossovers
94 involving any track pair].
95 -V[level] (more ...)
97 Select verbosity level [c].
98 -^ or just -
100 Print a short message about the syntax of the command, then
101 exits (NOTE: on Windows just use -).
102 -+ or just +
104 Print an extensive usage (help) message, including the explana‐
105 tion of any module-specific option (but not the GMT common
106 options), then exits.
107 -? or no arguments
109 Print a complete usage (help) message, including the explanation
110 of all options, then exits.
111
113 To report statistics of all the external magnetic crossovers associated
114 with the tag MGD77 from the file COE_data.txt, restricted to occupy a
115 certain region in the south Pacific, try
116 gmt x2sys_report COE_data.txt -V -TMGD77 -R180/240/-60/-30 -Cmag >
118 mag_report.txt
119 To report on the faa crossovers globally that involves track 12345678,
121 try
122 gmt x2sys_report COE_data.txt -V -TMGD77 -Cfaa -S2345678 > faa_report.txt
124
126 Mittal, P. K. (1984), Algorithm for error adjustment of potential field
127 data along a survey network, Geophysics, 49(4), 467-469.
128
130 x2sys_binlist x2sys_cross x2sys_datalist x2sys_get x2sys_init
131 x2sys_list x2sys_put x2sys_solve
132
134 2019, P. Wessel, W. H. F. Smith, R. Scharroo, J. Luis, and F. Wobbe
1355.4.5 Feb 24, 2019 X2SYS_REPORT(1)