Creates a new datafile based on a new fmt specification, populating
the new file with data from an old datafile.
Usage: Vcol options
- -s source.dat
- -t target.dat
- -f target.fmt
- -k "'key1', 'key2', 'key3', ..."
NOTE: It's important that key names be included in double and
single quotes, exactly as shown.
ALSO: The first key in the key list will be used to fill the
start/stop values in target.dat's label. Many TES utilities assume
that the start/stop values refer to an integral key field.