colmeta
Usage:
colmeta [-name <name>] [-units <units>] [-ucd <ucd>]
[-utype <utype>] [-xtype <xtype>] [-desc <descrip>]
[-shape <n>[,<n>...][,*]] [-elsize <n>]
<colid-list>
Modifies the metadata of one or more columns.
Some or all of the name, units, ucd, utype, xtype, description,
shape and elementsize of
the column(s), identified by <colid-list>
can be set by using some or all of the listed flags.
Typically, <colid-list> will simply be
the name of a single column.
The -name, -units,
-ucd, -utype, -xtype
and -desc flags just take textual arguments.
The -shape flag can also be used,
but is intended only for array-valued columns,
e.g. -shape 3,3 to declare a 3x3 array.
The final entry only in the shape list
may be a "*" character
to indicate unknown extent.
Array values with no specified shape effectively have a
shape of "*".
The -elsize flag may be used to specify the length
of fixed length strings; use with non-string columns
is not recommended.
Syntax for the <colid-list> argument is described in Section 6.3.