otp.Source.if_else#
- Source.if_else(condition, if_expr, else_expr)#
Shortcut for
apply()
with lambda if-else expression- Parameters
- Return type
Examples
Basic example of apply if-else to a tick flow:
>>> data = otp.Ticks(X=[1, 2, 3]) >>> data['Y'] = data.if_else(data['X'] > 2, 1, 0) >>> otp.run(data) Time X Y 0 2003-12-01 00:00:00.000 1 0 1 2003-12-01 00:00:00.001 2 0 2 2003-12-01 00:00:00.002 3 1
You can also set column value via
Operation
:>>> data = otp.Ticks(X=[1, 2, 3]) >>> data['Y'] = data.if_else(data['X'] > 2, data['X'] * 2, 0) >>> otp.run(data) Time X Y 0 2003-12-01 00:00:00.000 1 0 1 2003-12-01 00:00:00.001 2 0 2 2003-12-01 00:00:00.002 3 6
See also