x2sys_report(1) GMT x2sys_report(1)
NAME
x2sys_report - Report statistics from crossover data base
SYNOPSIS
x2sys_report -Ccolumn -TTAG [ coedbase.txt ] [ -A ] [ -I[list] ] [
-L[corrtable] ] [ -Nnx_min ] [ -Qe|i ] [ [ -Rregion ] [ -Strack ] [
-V[level] ]
Note: No space is allowed between the option flag and the associated
arguments.
DESCRIPTION
x2sys_report will read the input crossover ASCII data base coedbase.txt
(or stdin) and report on the statistics of crossovers (n, mean, stdev,
rms, weight) for each track. Options are available to let you exclude
tracks and limit the output.
REQUIRED ARGUMENTS
coedbase.txt
The name of the input ASCII crossover error data base as pro-
duced by x2sys_cross. If not given we read standard input
instead.
-Ccolumn
Specify which data column you want to process. Crossovers
related to this column name must be present in the crossover
data base.
-TTAG Specify the x2sys TAG which tracks the attributes of this data
type.
OPTIONAL ARGUMENTS
-A Eliminate COEs by distributing the COE between the two tracks in
proportion to track weight and producing (dist, adjustment)
spline knots files for each track (for the selected column).
Such adjustments may be used by x2sys_datalist. The adjustment
files are called track.column.adj and are placed in the
$X2SYS_HOME/TAG directory. For background information on how
these adjustments are designed, see Mittal [1984].
-I[list]
Name of ASCII file with a list of track names (one per record)
that should be excluded from consideration [Default includes all
tracks].
-L[corrtable]
Apply optimal corrections to the chosen observable. Append the
correction table to use [Default uses the correction table
TAG_corrections.txt which is expected to reside in the
$X2SYS_HOME/TAG directory]. For the format of this file, see
x2sys_solve.
-Nnx_min
Only report data from tracks involved in at least nx_min
crossovers [all tracks].
-Qe|i Append e for external crossovers or i for internal crossovers
only [Default is external].
-Rwest/east/south/north[/zmin/zmax][+r][+uunit]
west, east, south, and north specify the region of interest, and
you may specify them in decimal degrees or in
[A+-]dd:mm[:ss.xxx][W|E|S|N] format Append +r if lower left and
upper right map coordinates are given instead of w/e/s/n. The
two shorthands -Rg and -Rd stand for global domain (0/360 and
-180/+180 in longitude respectively, with -90/+90 in latitude).
Alternatively for grid creation, give Rcodelon/lat/nx/ny, where
code is a 2-character combination of L, C, R (for left, center,
or right) and T, M, B for top, middle, or bottom. e.g., BL for
lower left. This indicates which point on a rectangular region
the lon/lat coordinate refers to, and the grid dimensions nx and
ny with grid spacings via -I is used to create the corresponding
region. Alternatively, specify the name of an existing grid
file and the -R settings (and grid spacing, if applicable) are
copied from the grid. Appending +uunit expects projected (Carte-
sian) coordinates compatible with chosen -J and we inversely
project to determine actual rectangular geographic region. For
perspective view (-p), optionally append /zmin/zmax. In case of
perspective view (-p), a z-range (zmin, zmax) can be appended to
indicate the third dimension. This needs to be done only when
using the -Jz option, not when using only the -p option. In the
latter case a perspective view of the plane is plotted, with no
third dimension. For Cartesian data just give
xmin/xmax/ymin/ymax. This option bases the statistics on those
COE that fall inside the specified domain.
-Strack
Name of a single track. If given we restrict output to those
crossovers involving this track [Default output is crossovers
involving any track pair].
-V[level] (more a|)
Select verbosity level [c].
-^ or just -
Print a short message about the syntax of the command, then
exits (NOTE: on Windows just use -).
-+ or just +
Print an extensive usage (help) message, including the explana-
tion of any module-specific option (but not the GMT common
options), then exits.
-? or no arguments
Print a complete usage (help) message, including the explanation
of all options, then exits.
EXAMPLES
To report statistics of all the external magnetic crossovers associated
with the tag MGD77 from the file COE_data.txt, restricted to occupy a
certain region in the south Pacific, try
gmt x2sys_report COE_data.txt -V -TMGD77 -R180/240/-60/-30 -Cmag >
mag_report.txt
To report on the faa crossovers globally that involves track 12345678,
try
gmt x2sys_report COE_data.txt -V -TMGD77 -Cfaa -S2345678 > faa_report.txt
REFERENCES
Mittal, P. K. (1984), Algorithm for error adjustment of potential field
data along a survey network, Geophysics, 49(4), 467-469.
SEE ALSO
x2sys_binlist(1), x2sys_cross(1), x2sys_datalist(1), x2sys_get(1),
x2sys_init(1), x2sys_list(1), x2sys_put(1), x2sys_solve(1)
COPYRIGHT
2017, P. Wessel, W. H. F. Smith, R. Scharroo, J. Luis, and F. Wobbe
5.4.2 Jun 24, 2017 x2sys_report(1)
gmt5 5.4.2 - Generated Thu Jun 29 18:25:10 CDT 2017