onetick.py.Operation.__neg__

Operation.__neg__()

Return the negative value of float or int column.

Examples

>>> t = otp.Tick(A=1, B=2.3)
>>> t['A'] = -t['A']
>>> t['B'] = -t['B']
>>> otp.run(t)
        Time   A     B
0 2003-12-01  -1  -2.3