x2sys_datalist - A generic data-extractor ascii or binary files
x2sys_datalist file(s) [ -Ddeffile ] [ -Fname1,name2,... ] [ -H ] [
-M[flag] ] [ -Rwest/east/south/north ] [ -S ] [ -TTAG ] [ -V ] [ -bo ]
x2sys_datalist reads one or more files and produces an ASCII [or
binary] table. The files can be of any format, which must be descriped
and passed with the -D option (or, alternatively, the \-T option). You
may limit the output to a geographic region, and insist that the output
from several files be separated by a multiple segment header. Only the
named data fields will be output [Default is all columns].
files Can be one or more binary or ASCII data files. To give a list of
names, use ‘cat list_of_files‘.
No space between the option flag and the associated arguments
-D Definition file for this data set. [x2sys.def]
-F Give a comma-separated list of column names as defined in the
definition file. [Default is all data columns].
-H Input file(s) has Header record(s). Number of header records can
be changed by editing your .gmtdefaults4 file. If used, GMT
default is 1 header record. Use -Hi if only input data should
have header records [Default will write out header records if
the input data have them].
-S Suppress output records where all the data columns are NaN
[Default will output all records].
-T Sets the data set TAG which among other things sets the defini-
-V Selects verbose mode, which will send progress reports to stderr
[Default runs "silently"].
-bo Selects binary output. Append s for single precision [Default is
To extract all data from the old-style GMT MGG file c2104.gmt:
x2sys_datalist c2104.gmt -Dgmt > myfile
To make x,y,topo input for blockmean and surface using all the files
listed in the file tracks.lis, but only the data that are inside the
specified area, and make output binary, run
x2sys_datalist ‘cat tracks.lis‘ -Fx,y,topo -R-40/-30/25/35 -bo > all-
Man(1) output converted with