gmtconvert - Convert between ASCII and binary 1-D tables gmtconvert [ inputfiles ] [ -H [ nrec ] ] [ -M [ flag ] ] [ -V ] [ -: ] [ -bi [ s ] n ] [ -bo [ s ] ] gmtconvert reads its standard input [or inputfiles] and writes out the information to standard output. ... Input (and hence output) may have multiple subheaders if -M is selected. datafile ( s ) ASCII (or binary, see -bi ) file(s) holding a number of data columns. ... If used, GMT default is 1 header record. M Multiple segment file(s). ...