Logical

polars_ta.wq.logical

Functions:

Name	Description
and_	Logical AND operator, returns true if both operands are true and returns false otherwise
equal	Returns true if both inputs are same and returns false otherwise
if_else	条件判断
is_finite	If (input NaN or input == INF) return false, else return true
is_nan	If (input == NaN) return true else return false
is_not_finite	If (input NAN or input == INF) return true else return false
is_not_nan	If (input != NaN) return true else return false
is_not_null	If (input != null) return true else return false
is_null	If (input == null) return true else return false
less	If input1 < input2 return true, else return false
negate	The result is true if the converted operand is false; the result is false if the converted operand is true
not_	The result is true if the converted operand is false; the result is false if the converted operand is true
or_	Logical OR operator returns true if either or both inputs are true and returns false otherwise
xor	Logical XOR operator returns true if exactly one of the inputs is true and returns false otherwise

and_(a: Expr, *args) -> Expr

Logical AND operator, returns true if both operands are true and returns false otherwise

equal(input1: Expr, input2: Expr) -> Expr

Returns true if both inputs are same and returns false otherwise

if_else(condition: Expr, true_value: Expr, false_value: Expr = None) -> Expr

条件判断

Notes

如果true_value或false_value使用了None,导致数据有null, 后面如再有ts_时序算子，一定要留意当前over_null值

is_finite(input1: Expr) -> Expr

If (input NaN or input == INF) return false, else return true

is_nan(input1: Expr) -> Expr

If (input == NaN) return true else return false

is_not_finite(input1: Expr) -> Expr

If (input NAN or input == INF) return true else return false

is_not_nan(input1: Expr) -> Expr

If (input != NaN) return true else return false

is_not_null(input1: Expr) -> Expr

If (input != null) return true else return false

is_null(input1: Expr) -> Expr

If (input == null) return true else return false

less(input1: Expr, input2: Expr) -> Expr

If input1 < input2 return true, else return false

negate(input1: Expr) -> Expr

The result is true if the converted operand is false; the result is false if the converted operand is true

not_(input1: Expr) -> Expr

The result is true if the converted operand is false; the result is false if the converted operand is true

or_(a: Expr, *args) -> Expr

Logical OR operator returns true if either or both inputs are true and returns false otherwise

xor(a: Expr, b: Expr) -> Expr

Logical XOR operator returns true if exactly one of the inputs is true and returns false otherwise