series

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v0.0.0-...-8c0dd20 Latest Latest Go to latest Published: Jul 8, 2020 License: Apache-2.0 Imports: 11 Imported by: 0

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github.com/poopoothegorilla/fastframe

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Documentation ¶

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

This section is empty.

Types ¶

type Condition ¶

type Condition func(interface{}) bool

Condition represents a function which can be applied to any value and return a boolean.

type Series ¶

type Series struct {
	array.Interface
	// contains filtered or unexported fields
}

Series ... TODO: TRY A CHUNKED / COLUMN VERSION OF SERIES TODO: ADD PRECISION

func FromArrow ¶

func FromArrow(pool memory.Allocator, field arrow.Field, column array.Interface) Series

FromArrow creates a Series from an Arrow array.

func FromFloat32 ¶

func FromFloat32(pool memory.Allocator, field arrow.Field, vals []float32, valid []bool) Series

FromFloat32 creates a Series from a slice of float32 values.

func FromFloat64 ¶

func FromFloat64(pool memory.Allocator, field arrow.Field, vals []float64, valid []bool) Series

FromFloat64 creates a Series from a slice of float64 values.

func FromInt32 ¶

func FromInt32(pool memory.Allocator, field arrow.Field, vals []int32, valid []bool) Series

FromInt32 creates a Series from a slice of int32 values.

TODO(poopoothegorilla): might be worth creating a pool of builders and recycling them. TODO(poopoothegorilla): should the arrow.Field be replaced by a string param and constructed in the function?

func FromInt64 ¶

func FromInt64(pool memory.Allocator, field arrow.Field, vals []int64, valid []bool) Series

FromInt64 creates a Series from a slice of int64 values.

func FromInterface ¶

func FromInterface(pool memory.Allocator, field arrow.Field, vals interface{}, valid []bool) Series

FromInterface creates a Series from a slice of supported types.

func FromString ¶

func FromString(pool memory.Allocator, field arrow.Field, vals []string, valid []bool) Series

FromString creates a Series from a slice of string values.

func (Series) Abs ¶

func (s Series) Abs() Series

Abs returns a Series with all absolute values.

TODO(poopoothegorilla): need to pass valids into new Series.

func (Series) Add ¶

func (s Series) Add(ss Series) Series

Add adds two equal length and type Series and returns the resulting Series.

func (Series) Append ¶

func (s Series) Append(ss Series) Series

Append returns a Series with the values from the ss Series appended to the s Series.

func (Series) At ¶

func (s Series) At(i, _ int) float64

At returns the float64 value at the i position in the Series.

func (Series) AtVec ¶

func (s Series) AtVec(i int) float64

AtVec returns a float64 value at position i.

func (Series) Cast ¶

func (s Series) Cast(t arrow.DataType) Series

Cast returns a new series of t type.

func (Series) Column ¶

func (s Series) Column() *array.Column

Column returns an Arrow array column.

func (Series) Dims ¶

func (s Series) Dims() (r, c int)

Dims returns the dimensions of the Series as rows and columns.

func (Series) Dot ¶

func (s Series) Dot(ss Series) float64

Dot returns the Dot product of all values in the Series as a float64 value.

func (Series) DropIndices ¶

func (s Series) DropIndices(indices []int) Series

DropIndices returns a Series without values located at the provided indices.

TODO(poopoothegorilla): add DropByMask either as seperate function or choose by options.

func (Series) DropNA ¶

func (s Series) DropNA() Series

DropNA returns a Series without null values.

func (Series) Empty ¶

func (s Series) Empty(n int) Series

Empty creates an empty Series with n elements.

func (Series) Field ¶

func (s Series) Field() arrow.Field

Field returns the Arrow field associated with the Series.

func (Series) FindIndices ¶

func (s Series) FindIndices(val interface{}) []int

FindIndices returns a slice of indices where the value exists.

func (Series) Float32 ¶

func (s Series) Float32(i int) float32

Float32 returns the value at position i from the Series as an float32.

func (Series) Float64 ¶

func (s Series) Float64(i int) float64

Float64 returns the value at position i from the Series as an float64.

func (Series) Head ¶

func (s Series) Head(n int) Series

Head returns a Series with n values.

func (Series) Int32 ¶

func (s Series) Int32(i int) int32

Int32 returns the value at position i from the Series as an int32.

func (Series) Int64 ¶

func (s Series) Int64(i int) int64

Int64 returns the value at position i from the Series as an int64.

func (Series) IsNA ¶

func (s Series) IsNA() []bool

IsNA returns a slice of bools indicating positions where values are null.

func (Series) Magnitude ¶

func (s Series) Magnitude() float64

Magnitude returns the magnitude of the Series as a float64 value.

func (Series) Map ¶

func (s Series) Map(fn func(interface{}) interface{}) Series

Map applies the fn function to all values in the s Series and returns a Series with the resulting values.

func (Series) Max ¶

func (s Series) Max() float64

Max returns the maximum value of the Series as a float64.

func (Series) Mean ¶

func (s Series) Mean() float64

Mean retuns the mean of the Series as a float64.

func (Series) Median ¶

func (s Series) Median() float64

Median returns the median value of the Series as a float64.

TODO(poopoothegorilla): inefficient could be improved

func (Series) Min ¶

func (s Series) Min() float64

Min returns the minimum value of the Series as a float64.

func (Series) NAIndices ¶

func (s Series) NAIndices() []int

NAIndices returns the indices where values are null.

TODO{poopoothegorilla): COULD BE IMPROVED PERFORMANCE WISE... MAYBE USE NULL BITMASK

func (Series) Name ¶

func (s Series) Name() string

Name returns the Series name.

func (Series) Rename ¶

func (s Series) Rename(name string) Series

Rename returns a Series with a new name.

func (Series) STD ¶

func (s Series) STD() float64

STD returns the standard deviation of the Series as a float64 value.

func (Series) SelectIndices ¶

func (s Series) SelectIndices(indices []int) Series

SelectIndices returns a Series with values only present in the provided indices.

func (Series) SortValues ¶

func (s Series) SortValues() Series

SortValues returns a Series with sorted values.

TODO(poopoothegorilla): add sort options

func (Series) Sqrt ¶

func (s Series) Sqrt() Series

Sqrt returns a Series with the square root of all values.

func (Series) Square ¶

func (s Series) Square() Series

Square returns a Series with all values squared.

func (Series) String ¶

func (s Series) String() string

String returns a representation of the data as a string.

func (Series) StringValues ¶

func (s Series) StringValues() []string

StringValues returns the values of the Series as a slice of strings.

func (Series) Subtract ¶

func (s Series) Subtract(ss Series) Series

Subtract subtracts two equal length and type Series and returns the resulting Series.

func (Series) Sum ¶

func (s Series) Sum() float64

Sum returns the sum of all values in the Series as a float64 value.

func (Series) T ¶

func (s Series) T() mat.Matrix

T returns the transpose of the Series which is itself.

func (Series) Truncate ¶

func (s Series) Truncate(i, j int64) Series

Truncate returns a truncated Series.

func (Series) Unique ¶

func (s Series) Unique() Series

Unique returns a new series with only unique values.

func (Series) Value ¶

func (s Series) Value(i int) interface{}

Value returns the value at position i from the Series as an interface.

func (Series) Values ¶

func (s Series) Values() interface{}

Values returns the values of the Series as a slice of types.

func (Series) Where ¶

func (s Series) Where(cs ...Condition) Series

Where returns a Series where values satisfy any of the conditions.

Source Files ¶

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