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all functions - j
jc
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jc, file, ncyc
jump to the record of FILE nearest the specified NCYC.
interpreted function, defined at i0/std.i line 2374
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SEE ALSO:
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jt,
_jc,
edit_times,
show,
jr
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jr
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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 2397
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SEE ALSO:
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jt,
jc,
edit_times,
show
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jt
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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 2337
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SEE ALSO:
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jc,
_jt,
edit_times,
show,
jr
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