operations

A Daf query can use operations to process the data: EltwiseOperation that preserve the shape of the data, and ReductionOperation that reduce a matrix to a vector, or a vector to a scalar. See the Julia documentation for details.

class dafpy.operations. QueryOperation ( jl_obj )

Base class for all query operations. See the Julia documentation for details.

Query operations can be chained into a QuerySequence using the | operator in Python (instead of the |> operator in Julia).

class dafpy.operations. QuerySequence ( jl_obj )

A sequence of QueryOperation . See the Julia documentation for details.

Query operations can be chained into a QuerySequence using the | operator in Python (instead of the |> operator in Julia).

class dafpy.operations. EltwiseOperation ( jl_obj )

Base class for all element-wise operations. See the Julia documentation for details.

class dafpy.operations. ReductionOperation ( jl_obj )

Abstract type for all reduction operations. See the Julia documentation for details.

class dafpy.operations. Abs ( * , type : Type | None = None )

Element-wise operation that converts every element to its absolute value. See the Julia documentation for details.

class dafpy.operations. Clamp ( * , min : float = -inf , max : float = inf )

Element-wise operation that converts every element to a value inside a range. See the Julia documentation for details.

class dafpy.operations. Convert ( * , type : Type )

Element-wise operation that converts every element to a given data type. See the Julia documentation for details.

class dafpy.operations. Fraction ( * , type : Type | None = None )

Element-wise operation that converts every element to its fraction out of the total. See the Julia documentation for details.

class dafpy.operations. Log ( * , type : Type | None = None , base : float = 2.718281828459045 , eps : float = 0 )

Element-wise operation that converts every element to its logarithm. See the Julia documentation for details.

class dafpy.operations. Max

Reduction operation that returns the maximal element. See the Julia documentation for details.

class dafpy.operations. Median

Reduction operation that returns the median value. See the Julia documentation for details.

class dafpy.operations. Mean

Reduction operation that returns the mean value. See the Julia documentation for details.

class dafpy.operations. Min

Reduction operation that returns the minimal element. See the Julia documentation for details.

class dafpy.operations. Quantile ( * , type : Type | None = None , p : float )

Reduction operation that returns the quantile value, that is, a value such that a certain fraction of the values is lower. See the Julia documentation for details.

class dafpy.operations. Round ( * , type : Type | None = None )

Element-wise operation that converts every element to the nearest integer value. See the Julia documentation for details.

class dafpy.operations. Significant ( * , high : float , low : float | None = None )

Element-wise operation that zeros all “insignificant” values. See the Julia documentation for details.

class dafpy.operations. Std

Reduction operation that returns the standard deviation of the values. See the Julia documentation for details.

class dafpy.operations. StdN

Reduction operation that returns the standard deviation of the values, normalized (divided) by the mean of the values. See the Julia documentation for details.

class dafpy.operations. Sum ( * , type : Type | None = None )

Reduction operation that sums elements. See the Julia documentation for details.

class dafpy.operations. Var

Reduction operation that returns the variance of the values. See the Julia documentation for details.

class dafpy.operations. VarN

Reduction operation that returns the variance of the values, normalized (divided) by the mean of the values. See the Julia documentation for details.