Provided by: gmt_4.5.11-1build1_amd64 bug


       x2sys_report - Report statistics from crossover data base


       x2sys_report  -Ccolumn  -TTAG  [  coedbase.txt  ]  [ -A ] [ -I[list] ] [ -L[corrtable] ] [
       -Nnx_min ] [ -Qe|i ] [ -Rwest/east/south/north[r] ] [ -Strack ] [ -V ]


       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.


       No space between the option flag and the associated arguments.

              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

       -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

       -R     west, east, south, and north specify the Region of interest, and  you  may  specify
              them  in  decimal  degrees  or  in [+-]dd:mm[][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


       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,

       x2sys_report COE_data.txt -V -T MGD77 -R 180/240/-60/-30 -C mag > mag_report.txt

       To report on the faa crossovers globally that involves track 12345678, try

       x2sys_report COE_data.txt -V -T MGD77 -C faa -S 12345678  > faa_report.txt


       Mittal,  P.  K.  (1984),  Algorithm  for  error adjustment of potential field data along a
       survey network, Geophysics, 49(4), 467-469.


       x2sys_binlist(1) x2sys_cross(1) x2sys_datalist(1) x2sys_get(1) x2sys_init(1) x2sys_list(1)
       x2sys_put(1) x2sys_solve(1)