ndarray

package module
v0.0.0-...-0cec479 Latest Latest
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 Go to latest Published: Sep 14, 2019 License: MIT Imports: 5 Imported by: 0

README

NdArray

An n-dimensional array package implemented in Go.

Note: Was an unplanned package developed for another project I was working on, its a little inefficient and not recommended for use, I will be developing a v2 that is more usable. It is here simply as a dependency that I will not modify.

Documentation

Index

Constants

View Source 
const (
	TYPE_EMPTY  = 0
	TYPE_SCALER = 1
	TYPE_VEC    = 2
	TYPE_MATRIX = 4
	TYPE_N      = 8
)
View Source 
const DegToRad = 0.017453292519943295769236907684886127134428718885417
View Source 
const RadToDeg = 57.2957795131

Variables

View Source 
var (
	UnitX = Vec{1, 0, 0}
	UnitY = Vec{0, 1, 0}
	UnitZ = Vec{0, 0, 1}
)
View Source 
var RealEpsilon float64

RealEpsilon gives an upper bound on the relative error due to rounding in floating point arithmetic.

Functions

func Assign 

func Assign(lhs, rhs *Array)

func Clamp 

func Clamp(value, min, max float64) float64

func Map 

func Map(in, in_min, in_max, out_min, out_max float64) float64

func Max 

func Max(base float64, compare float64) float64

func Min 

func Min(base float64, compare float64) float64

Types

type Array 

type Array struct {
	Data   []float64
	Length int
	// contains filtered or unexported fields
}

func Arrange 

func Arrange(start, stop, step float64) *Array

func Copy 

func Copy(arr *Array) *Array

func Dot 

func Dot(x, y *Array) *Array

func Empty 

func Empty() *Array

func Full 

func Full(fill_value float64, dims ...int) *Array

func HStack 

func HStack(a, b *Array) *Array

func Identity 

func Identity(dims ...int) *Array

func NewNdArray 

func NewNdArray(values []float64, rcd ...int) *Array

func NewRowVector 

func NewRowVector(values []float64, length int) *Array

func Ones 

func Ones(dims ...int) *Array

func Random 

func Random(dims ...int) *Array

func Scalar 

func Scalar(value float64) *Array

func VDot 

func VDot(this, by *Array) *Array

func VStack 

func VStack(a, b *Array) *Array

func VectorN 

func VectorN(values ...float64) *Array

func Zeros 

func Zeros(dims ...int) *Array

func ZerosLike 

func ZerosLike(arr *Array) *Array

func (*Array) Abs 

func (this *Array) Abs() float64

func (Array) Activate 

func (this Array) Activate(fn func(x float64) float64) *Array

Like ForEach but creates and returns a copy

func (*Array) Add 

func (this *Array) Add(by *Array) *Array

func (*Array) ArgMax 

func (this *Array) ArgMax(axis ...int) int

func (*Array) AsScalar 

func (this *Array) AsScalar() float64

func (Array) At 

func (this Array) At(r, c int) float64

func (*Array) Column 

func (this *Array) Column(j int) []float64

func (*Array) Cross 

func (this *Array) Cross(by *Array) *Array

func (*Array) DataCopy 

func (this *Array) DataCopy() []float64

---------------------------------------------------------------

func (*Array) Det 

func (this *Array) Det() float64

func (*Array) Diagonal 

func (this *Array) Diagonal() *Array

func (Array) Dim 

func (this Array) Dim(index int) int

func (Array) Dims 

func (this Array) Dims() (rows, columns int)

func (*Array) Distance 

func (this *Array) Distance() float64

func (*Array) Equal 

func (this *Array) Equal(with *Array) bool

func (*Array) EqualDims 

func (this *Array) EqualDims(with *Array) bool

func (*Array) Eye 

func (this *Array) Eye() *Array

func (*Array) Flatten 

func (this *Array) Flatten(order byte) *Array

func (*Array) ForEach 

func (this *Array) ForEach(fn func(x float64) float64) *Array

Apply a function over each element of the ndarray

func (*Array) Inverse 

func (this *Array) Inverse() *Array

func (Array) IsMatrix 

func (this Array) IsMatrix() bool

func (Array) IsScalar 

func (this Array) IsScalar() bool

func (Array) IsVec 

func (this Array) IsVec() bool

func (*Array) Mult 

func (this *Array) Mult(by *Array) *Array

func (*Array) Normalize 

func (this *Array) Normalize() *Array

func (*Array) PointwiseMult 

func (this *Array) PointwiseMult(by *Array) *Array

func (*Array) Row 

func (this *Array) Row(i int) []float64

func (*Array) Scale 

func (this *Array) Scale(k float64) *Array

func (*Array) Set 

func (this *Array) Set(r, c int, value float64)

func (Array) String 

func (this Array) String() string

func (*Array) Sub 

func (this *Array) Sub(by *Array) *Array

func (*Array) Sum 

func (this *Array) Sum() float64

func (*Array) T 

func (this *Array) T() *Array

Transpose

func (*Array) Trace 

func (this *Array) Trace() float64

func (Array) Type 

func (this Array) Type() int

type Shape 

type Shape struct {
	// contains filtered or unexported fields
}

func NewShape 

func NewShape(dims ...int) *Shape

func (Shape) Columns 

func (s Shape) Columns() int

func (Shape) Depth 

func (s Shape) Depth() int

func (Shape) Dim 

func (s Shape) Dim(index int) int

func (Shape) Dims 

func (s Shape) Dims() []int

func (*Shape) Resize 

func (s *Shape) Resize(dims ...int)

func (Shape) Rows 

func (s Shape) Rows() int

type Vec 

type Vec [3]float64

Vec is a 3 dimensional num

func RandomInCircle 

func RandomInCircle(max float64) *Vec

func V 

func V(x, y, z float64) *Vec

func V2 

func V2(x, y float64) *Vec

func X 

func X() *Vec

func Y 

func Y() *Vec

func Z 

func Z() *Vec

func ZV 

func ZV() *Vec

func (*Vec) Add 

func (v *Vec) Add(b *Vec) *Vec

func (*Vec) AddScaledVector 

func (v *Vec) AddScaledVector(b *Vec, t float64) *Vec

func (*Vec) Clear 

func (v *Vec) Clear() *Vec

func (*Vec) Clone 

func (v *Vec) Clone() *Vec

func (*Vec) Copy 

func (v *Vec) Copy(b *Vec)

func (*Vec) Distance 

func (v *Vec) Distance(b *Vec) float64

func (*Vec) Dot 

func (v *Vec) Dot(b *Vec) float64

func (*Vec) Equals 

func (v *Vec) Equals(b *Vec) bool

func (*Vec) IntersectsCircle 

func (v *Vec) IntersectsCircle() bool

func (*Vec) IntersectsCylinder 

func (v *Vec) IntersectsCylinder() bool

func (*Vec) IntersectsSphere 

func (d *Vec) IntersectsSphere(p0, p1 *Vec, r float64) float64

func (*Vec) IntersectsSquare 

func (v *Vec) IntersectsSquare() bool

func (*Vec) Inverse 

func (v *Vec) Inverse() *Vec

func (*Vec) Length 

func (v *Vec) Length() float64

func (*Vec) Mult 

func (v *Vec) Mult(b *Vec) *Vec

func (*Vec) NdArray 

func (v *Vec) NdArray() *Array

func (*Vec) NewAdd 

func (v *Vec) NewAdd(b *Vec) *Vec

func (*Vec) NewAddSub 

func (v *Vec) NewAddSub(b *Vec) *Vec

func (*Vec) NewCross 

func (v *Vec) NewCross(b *Vec) *Vec

NewCross aka VectorProduct "%"

func (*Vec) NewInverse 

func (v *Vec) NewInverse() *Vec

func (*Vec) NewMult 

func (v *Vec) NewMult(b *Vec) *Vec

func (*Vec) NewScale 

func (v *Vec) NewScale(t float64) *Vec

func (*Vec) NewSub 

func (v *Vec) NewSub(b *Vec) *Vec

func (*Vec) NewVectorProduct 

func (v *Vec) NewVectorProduct(b *Vec) *Vec

NewVectorProduct aka cross product

func (*Vec) Normalize 

func (v *Vec) Normalize() *Vec

func (*Vec) RotateAround 

func (v *Vec) RotateAround(origin *Vec, rads float64) *Vec

func (*Vec) ScalarProduct 

func (v *Vec) ScalarProduct(b *Vec) float64

ScalarProduct calculates and returns the scalar product of this num with the given num.

func (*Vec) Scale 

func (v *Vec) Scale(t float64) *Vec

func (*Vec) Set 

func (v *Vec) Set(x, y, z float64)

func (*Vec) SquareLength 

func (v *Vec) SquareLength() float64

func (*Vec) String 

func (v *Vec) String() string

String return a string representation of a num with 5 decimals per axis

func (*Vec) Sub 

func (v *Vec) Sub(b *Vec) *Vec

func (*Vec) ToPixelVec 

func (v *Vec) ToPixelVec() pixel.Vec

func (*Vec) X 

func (v *Vec) X() float64

func (*Vec) Y 

func (v *Vec) Y() float64

func (*Vec) Z 

func (v *Vec) Z() float64

Source Files

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