NAME

       x2sys_binlist - Create bin index listing from track data files

SYNOPSIS

       x2sys_binlist track(s)  -TTAG [  -D ] [  -E ] [  -V[level] ]

       Note: No space is allowed between the option flag and the associated arguments.

DESCRIPTION

       x2sys_binlist  reads  one or more track data files and produces a multisegment ASCII track bin-index file
       (tbf) with the track name in the header and one data record per bin crossed; these records  contain  lon,
       lat,  index, flags[, dist], where lon, lat are the coordinates of the center of the bin, the index is the
       1-D number of the bin, and flags is a bitflag that describes which data fields  were  available  in  this
       bin.  The  optional  dist requires  -D. The input files can be of any format, which must be described and
       passed with the
        -T option. The bin-index listing is a crude representation of where the track goes and is  used  by  the
       data archivist to build an x2sys track data base for miscellaneous track queries, such as when needing to
       determine  which tracks should be compared in a crossover analysis. You must run x2sys_init to initialize
       the tag before you can run the indexing.

REQUIRED ARGUMENTS

       tracks Can be one or more ASCII, native binary, or COARDS netCDF 1-D data files. To supply the data files
              via a text file with a list of tracks (one per record), specify the name of the track list after a
              leading equal-sign (e.g., =tracks.lis). If the names are missing  their  file  extension  we  will
              append  the  suffix  specified for this TAG. Track files will be searched for first in the current
              directory and second in all directories listed in $X2SYS_HOME/TAG/TAG_paths.txt  (if  it  exists).
              [If  $X2SYS_HOME  is not set it will default to $GMT_SHAREDIR/x2sys]. (Note: MGD77 files will also
              be  looked  for  via  MGD77_HOME/mgd77_paths.txt  and  *.gmt  files  will  be  searched  for   via
              $GMT_SHAREDIR/mgg/gmtfile_paths).

       -TTAG  Specify the x2sys TAG which tracks the attributes of this data type.

OPTIONAL ARGUMENTS

       -D     Calculate  the  length  of  track-line  segments  per  bin  [Default  skips this step]. The length
              fragments are given as the 5th output column (after the flags). The length units are obtained  via
              the TAB setting (see x2sys_init).

       -E     Convert  geographic  data  to  a cylindrical equal-area projection prior to binning. Basically, we
              apply the projection -JYlon0/37:04:17.166076/360, where lon0 is the mid-longitude of  the  region.
              Requires  -D, geographical data, and a global region (e.g., -Rg or -Rd). This option is useful for
              statistics related to track-line density but should not be used when preparing bin-index files for
              the x2sys track data bases.

       -V[level] (more …)
              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 explanation 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  create a bin index file from the MGD77 file 01030061.mgd77 using the settings associated with the tag
       MGD77, do

              gmt x2sys_binlist 01030061.mgd77 -TMGD77 > 01030061.tbf

       To create a track bin index file of all MGD77+ files residing in the current directory using the settings
       associated with the tag MGD77+ and calculate track distances, run

              gmt x2sys_binlist *.nc -TMGD77+ -D > all.tbf

SEE ALSO

       x2sys_cross, x2sys_datalist, x2sys_get, x2sys_init, x2sys_put, x2sys_report, x2sys_solve

COPYRIGHT

       2018, P. Wessel, W. H. F. Smith, R. Scharroo, J. Luis, and F. Wobbe

5.4.3                                             Jan 03, 2018                               X2SYS_BINLIST(1gmt)