otp.Source.switch#

Source.switch(expr, cases, default=False)#

The method splits data using passed expression for several outputs by passed cases. This method is an alias for Source.split() method.

Parameters

expr (Operation) – column or column based expression
cases (list) – list of values or onetick.py.range objects to split by
default (bool) – True adds the default output
self (Source) –

Return type

Outputs according to passed cases, number of outputs is number of cases plus one if default=True

Examples

>>> data = otp.Ticks(X=[0.33, -5.1, otp.nan, 9.4])
>>> r1, r2, r3 = data.switch(data['X'], [otp.nan, otp.range(0, 100)], default=True)
>>> otp.run(r1)
                     Time   X
0 2003-12-01 00:00:00.002 NaN
>>> otp.run(r2)
                     Time     X
0 2003-12-01 00:00:00.000  0.33
1 2003-12-01 00:00:00.003  9.40
>>> otp.run(r3)
                     Time    X
0 2003-12-01 00:00:00.001 -5.1