Home Manual Packages Global Index Keywords Quick Reference | # functions in std.i - j
jc |
                 jc, file, ncyc

         jump to the record of FILE nearest the specified NCYC.

    interpreted function, defined at i0/std.i   line 2241
SEE ALSO: | jt, _jc, edit_times, show, jr
jr |
                 jr, file, i
              or _jr(file, i)

         Jump to a particular record number I (from 1 to n_records) in a
         binary file FILE.  The function returns 1 if such a record exists,
         0 if there is no such record.  In the latter case, no action is
         taken; the program halts with an error only if jr was invoked
         as a subroutine.  Record numbering wraps like array indices; use
         jr, file, 0  to jump to the last record, -1 to next to last, etc.

    interpreted function, defined at i0/std.i   line 2264
SEE ALSO: | jt, jc, edit_times, show
jt |
                 jt, time
              or jt, file, time
              or jt, file
              or jt, file, -

         jump to the record nearest the specified TIME.  If no FILE is
         specified, the current record of all open binary files containing
         records is shifted.
         If both FILE and TIME are specified and jt is called as a function,
         it returns the actual time of the new current record.
       N.B.: "jt, file" and "jt, file, -" are obsolete.  Use the jr function to
         step through a file one record at a time.
         If only the FILE is specified, increment the current record of that
         FILE by one.  If the TIME argument is - (the pseudo-index range
         function), decrement the current record of FILE by one.
         If the current record is the last, "jt, file" unsets the current record
         so that record variables will be inaccessible until another jt or jc.
         The same thing happens with "jt, file, -" if the current record was the
         first.
         If only FILE is specified, jt returns 1 if there is a new current
         record, 0 if the call resulted in no current record.  Thus "jt(file)"
         and "jt(file,-)" may be used as the condition in a while loop to step
         through every record in a file:
            file= openb("example.pdb");
            do {
    	  restore, file, interesting_record_variables;
    	  ...calculations...
    	} while (jt(file));

    interpreted function, defined at i0/std.i   line 2204
SEE ALSO: | jc, _jt, edit_times, show, jr