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
] [
-Rwest/
east/
south/
north[
r] ] [
-Strack ] [
-V ]
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.
- -C
- Specify which data column you want to process. Crossovers
related to this column name must be present in the crossover data
base.
- -T
- Specify the x2sys TAG which tracks the attributes of
this data type.
OPTIONS¶
No space between the option flag and the associated arguments.
- coedbase.txt
- The name of the input ASCII crossover error data base as
produced by x2sys_cross. If not given we read standard input
instead.
- -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
- Name of ASCII file with a list of track names (one per
record) that should be excluded from consideration [Default includes all
tracks].
- -L
- 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.
- -N
- Only report data from tracks involved in at least
nx_min crossovers [all tracks].
- -Q
- Append e for external crossovers or i for
internal crossovers only [Default is external].
- -R
- west, east, south, and north 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 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, specify the name of an existing grid file and the -R
settings (and grid spacing, if applicable) are copied from the grid. For
Cartesian data just give xmin/xmax/ymin/ymax. This option bases the
statistics on those COE that fall inside the specified domain.
- -S
- 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
- Selects verbose mode, which will send progress reports to
stderr [Default runs "silently"].
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
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
x2sys_report COE_data.txt
-V -TMGD77
-Cfaa
-S12345678 > 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)