chart

package module

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Versions in this module

v1

v1.1.0

Jul 19, 2016

Changes in this version

+ var DefaultSeriesStrokeColors = []drawing.Color

+ func DrawAnnotation(r Renderer, canvasBox Box, style Style, lx, ly int, label string)

+ func DrawBoundedSeries(r Renderer, canvasBox Box, xrange, yrange Range, s Style, ...)

+ func DrawBox(r Renderer, b Box, s Style)

+ func DrawHistogramSeries(r Renderer, canvasBox Box, xrange, yrange Range, s Style, vs ValueProvider, ...)

+ func DrawLineSeries(r Renderer, canvasBox Box, xrange, yrange Range, s Style, vs ValueProvider)

+ func DrawText(r Renderer, text string, x, y int, s Style)

+ func DrawTextCentered(r Renderer, text string, x, y int, s Style)

+ func GetDefaultSeriesStrokeColor(index int) drawing.Color

+ func MinAndMax(values ...float64) (min float64, max float64)

+ func MinAndMaxOfTime(values ...time.Time) (min time.Time, max time.Time)

+ func SeqDays(days int) []time.Time

+ func SeqRand(samples int, scale float64) []float64

+ func Slices(count int, total float64) []float64

+ type Annotation struct

+ Label string

+ X float64

+ Y float64

type BollingerBandsSeries

+ func (bbs *BollingerBandsSeries) GetBoundedLastValue() (x, y1, y2 float64)

+ func (bbs *BollingerBandsSeries) GetBoundedValue(index int) (x, y1, y2 float64)

+ type BoundedLastValueProvider interface

+ GetBoundedLastValue func() (x, y1, y2 float64)

+ type BoundedValueProvider interface

+ GetBoundedValue func(index int) (x, y1, y2 float64)

+ Len func() int

type Box

+ func MeasureAnnotation(r Renderer, canvasBox Box, s Style, lx, ly int, label string) Box

type ContinuousSeries

+ func (cs ContinuousSeries) GetLastValue() (float64, float64)

+ func (cs ContinuousSeries) GetValue(index int) (float64, float64)

type EMASeries

+ func (ema *EMASeries) GetLastValue() (x, y float64)

+ func (ema *EMASeries) GetValue(index int) (x, y float64)

+ type Float float64

+ func (f Float) String() string

+ type FullBoundedValueProvider interface

+ type FullValueProvider interface

type GridLine

+ IsVertical bool

+ func (gl GridLine) Horizontal() bool

+ func (gl GridLine) Vertical() bool

type HistogramSeries

+ func (hs HistogramSeries) GetBoundedValue(index int) (x, y1, y2 float64)

+ func (hs HistogramSeries) GetValue(index int) (x, y float64)

+ type LastValueProvider interface

+ GetLastValue func() (x, y float64)

type MACDLineSeries

+ func (macdl *MACDLineSeries) GetValue(index int) (x float64, y float64)

type MACDSeries

+ func (macd *MACDSeries) GetValue(index int) (x float64, y float64)

type MACDSignalSeries

+ func (macds *MACDSignalSeries) GetValue(index int) (x float64, y float64)

type Range

+ Domain int

+ Max float64

+ Min float64

+ func (r Range) Delta() float64

+ func (r Range) GetRoundedRangeBounds() (min, max float64)

+ func (r Range) IsZero() bool

+ func (r Range) String() string

type Renderable

+ func CreateLegend(c *Chart, userDefaults ...Style) Renderable

+ type RingBuffer struct

+ func NewRingBuffer() *RingBuffer

+ func NewRingBufferFromSlice(values []interface{}) *RingBuffer

+ func NewRingBufferWithCapacity(capacity int) *RingBuffer

+ func (rb *RingBuffer) AsSlice() []interface{}

+ func (rb *RingBuffer) Clear()

+ func (rb *RingBuffer) Dequeue() interface{}

+ func (rb *RingBuffer) Each(consumer func(value interface{}))

+ func (rb *RingBuffer) Enqueue(object interface{})

+ func (rb *RingBuffer) Len() int

+ func (rb *RingBuffer) Peek() interface{}

+ func (rb *RingBuffer) PeekBack() interface{}

+ func (rb *RingBuffer) String() string

+ func (rb *RingBuffer) TotalLen() int

+ func (rb *RingBuffer) TrimExcess()

type SMASeries

+ func (sma SMASeries) GetLastValue() (x, y float64)

+ func (sma SMASeries) GetValue(index int) (x, y float64)

type Style

+ Show bool

+ func (s Style) SVG(dpi float64) string

+ func (s Style) SVGFill() Style

+ func (s Style) SVGFillAndStroke() Style

+ func (s Style) SVGFontFace() string

+ func (s Style) SVGStroke() Style

+ func (s Style) SVGStrokeDashArray() string

+ func (s Style) SVGText() Style

+ func (s Style) WithDefaultsFrom(defaults Style) (final Style)

type Tick

+ func GenerateTicksWithStep(ra Range, step float64, vf ValueFormatter) []Tick

type TimeSeries

+ func (ts TimeSeries) GetLastValue() (x, y float64)

+ func (ts TimeSeries) GetValue(index int) (x, y float64)

+ type ValueProvider interface

+ GetValue func(index int) (float64, float64)

+ Len func() int

v1.0.0

Jul 18, 2020

Changes in this version

+ const ContentTypePNG

+ const ContentTypeSVG

+ const DefaultAnnotationDeltaWidth

+ const DefaultAnnotationFontSize

+ const DefaultAxisFontSize

+ const DefaultAxisLineWidth

+ const DefaultBackgroundStrokeWidth

+ const DefaultBarSpacing

+ const DefaultBarWidth

+ const DefaultCanvasStrokeWidth

+ const DefaultChartHeight

+ const DefaultChartWidth

+ const DefaultDPI

+ const DefaultDateFormat

+ const DefaultDateHourFormat

+ const DefaultDateMinuteFormat

+ const DefaultDotWidth

+ const DefaultEMAPeriod

+ const DefaultFloatFormat

+ const DefaultFontSize

+ const DefaultHorizontalTickWidth

+ const DefaultLineSpacing

+ const DefaultMACDPeriodPrimary

+ const DefaultMACDPeriodSecondary

+ const DefaultMACDSignalPeriod

+ const DefaultMinimumFontSize

+ const DefaultMinimumTickHorizontalSpacing

+ const DefaultMinimumTickVerticalSpacing

+ const DefaultPercentValueFormat

+ const DefaultSeriesLineWidth

+ const DefaultSimpleMovingAveragePeriod

+ const DefaultStrokeWidth

+ const DefaultTickCount

+ const DefaultTickCountSanityCheck

+ const DefaultTitleFontSize

+ const DefaultTitleTop

+ const DefaultVerticalTickHeight

+ const DefaultXAxisMargin

+ const DefaultYAxisMargin

+ const Disabled

+ const SecondsPerDay

+ const SecondsPerHour

+ var AlternateColorPalette alternateColorPalette

+ var BoxZero = Box

+ var ColorAlternateBlue = drawing.Color

+ var ColorAlternateGray = drawing.Color

+ var ColorAlternateGreen = drawing.Color

+ var ColorAlternateLightGray = drawing.Color

+ var ColorAlternateYellow = drawing.Color

+ var ColorBlack = drawing.Color

+ var ColorBlue = drawing.Color

+ var ColorCyan = drawing.Color

+ var ColorGreen = drawing.Color

+ var ColorLightGray = drawing.Color

+ var ColorOrange = drawing.Color

+ var ColorRed = drawing.Color

+ var ColorTransparent = drawing.Color

+ var ColorWhite = drawing.Color

+ var ColorYellow = drawing.Color

+ var DashArrayDashesLarge = []int

+ var DashArrayDashesMedium = []int

+ var DashArrayDashesSmall = []int

+ var DashArrayDots = []int

+ var DefaultAlternateColors = []drawing.Color

+ var DefaultAnnotationFillColor = ColorWhite

+ var DefaultAnnotationPadding = Box

+ var DefaultAxisColor = ColorBlack

+ var DefaultBackgroundColor = ColorWhite

+ var DefaultBackgroundPadding = Box

+ var DefaultBackgroundStrokeColor = ColorWhite

+ var DefaultCanvasColor = ColorWhite

+ var DefaultCanvasStrokeColor = ColorWhite

+ var DefaultColorPalette defaultColorPalette

+ var DefaultColors = []drawing.Color

+ var DefaultFillColor = ColorBlue

+ var DefaultGridLineColor = ColorLightGray

+ var DefaultStrokeColor = ColorLightGray

+ var DefaultTextColor = ColorBlack

+ var Draw = &draw

+ var Text = &text

+ func AbsInt(value int) int

+ func CirclePoint(cx, cy int, radius, thetaRadians float64) (x, y int)

+ func Days(days int) []time.Time

+ func Debug(log Logger, arguments ...interface{})

+ func Debugf(log Logger, format string, arguments ...interface{})

+ func DegreesAdd(baseDegrees, deltaDegrees float64) float64

+ func DegreesToCompass(deg float64) float64

+ func DegreesToRadians(degrees float64) float64

+ func DiffHours(t1, t2 time.Time) (hours int)

+ func FloatValueFormatter(v interface{}) string

+ func FloatValueFormatterWithFormat(v interface{}, floatFormat string) string

+ func GetAlternateColor(index int) drawing.Color

+ func GetDefaultColor(index int) drawing.Color

+ func GetDefaultFont() (*truetype.Font, error)

+ func GetRoundToForDelta(delta float64) float64

+ func Hours(start time.Time, totalHours int) []time.Time

+ func HoursFilled(xdata []time.Time, ydata []float64) ([]time.Time, []float64)

+ func Info(log Logger, arguments ...interface{})

+ func Infof(log Logger, format string, arguments ...interface{})

+ func IntValueFormatter(v interface{}) string

+ func Jet(v, vmin, vmax float64) drawing.Color

+ func LinearRange(start, end float64) []float64

+ func LinearRangeWithStep(start, end, step float64) []float64

+ func MaxInt(values ...int) (max int)

+ func Mean(values ...float64) float64

+ func MeanInt(values ...int) int

+ func MinInt(values ...int) (min int)

+ func MinMax(values ...float64) (min, max float64)

+ func Normalize(values ...float64) []float64

+ func ParseFloats(values ...string) ([]float64, error)

+ func ParseTimes(layout string, values ...string) ([]time.Time, error)

+ func PercentDifference(v1, v2 float64) float64

+ func PercentToRadians(pct float64) float64

+ func PercentValueFormatter(v interface{}) string

+ func RadianAdd(base, delta float64) float64

+ func RadiansToDegrees(value float64) float64

+ func RandomValues(count int) []float64

+ func RandomValuesWithMax(count int, max float64) []float64

+ func ReadChunks(filePath string, chunkSize int, handler func([]byte) error) error

+ func ReadLines(filePath string, handler func(string) error) error

+ func RotateCoordinate(cx, cy, x, y int, thetaRadians float64) (rx, ry int)

+ func RoundDown(value, roundTo float64) float64

+ func RoundPlaces(input float64, places int) (rounded float64)

+ func RoundUp(value, roundTo float64) float64

+ func SVGWithCSS(css string, nonce string) func(width, height int) (Renderer, error)

+ func SplitCSV(text string) (output []string)

+ func Sum(values ...float64) float64

+ func SumInt(values ...int) int

+ func TimeDateValueFormatter(v interface{}) string

+ func TimeFromFloat64(tf float64) time.Time

+ func TimeHourValueFormatter(v interface{}) string

+ func TimeMax(times ...time.Time) (max time.Time)

+ func TimeMillis(d time.Duration) float64

+ func TimeMin(times ...time.Time) (min time.Time)

+ func TimeMinMax(times ...time.Time) (min, max time.Time)

+ func TimeMinuteValueFormatter(v interface{}) string

+ func TimeToFloat64(t time.Time) float64

+ func TimeValueFormatter(v interface{}) string

+ func ToFloat64(t time.Time) float64

+ func Viridis(v, vmin, vmax float64) drawing.Color

+ type AnnotationSeries struct

+ Annotations []Value2

+ Name string

+ Style Style

+ YAxis YAxisType

+ func BoundedLastValuesAnnotationSeries(innerSeries FullBoundedValuesProvider, vfs ...ValueFormatter) AnnotationSeries

+ func FirstValueAnnotation(innerSeries ValuesProvider, vfs ...ValueFormatter) AnnotationSeries

+ func LastValueAnnotationSeries(innerSeries ValuesProvider, vfs ...ValueFormatter) AnnotationSeries

+ func (as AnnotationSeries) GetName() string

+ func (as AnnotationSeries) GetStyle() Style

+ func (as AnnotationSeries) GetYAxis() YAxisType

+ func (as AnnotationSeries) Measure(r Renderer, canvasBox Box, xrange, yrange Range, defaults Style) Box

+ func (as AnnotationSeries) Render(r Renderer, canvasBox Box, xrange, yrange Range, defaults Style)

+ func (as AnnotationSeries) Validate() error

+ type Array []float64

+ func NewArray(values ...float64) Array

+ func (a Array) GetValue(index int) float64

+ func (a Array) Len() int

+ type Axis interface

+ GenerateTicks func(r Renderer, ra Range, vf ValueFormatter) []Tick

+ GetGridLines func(ticks []Tick) []GridLine

+ GetName func() string

+ GetStyle func() Style

+ GetTicks func() []Tick

+ Measure func(r Renderer, canvasBox Box, ra Range, style Style, ticks []Tick) Box

+ Render func(r Renderer, canvasBox Box, ra Range, style Style, ticks []Tick)

+ SetName func(name string)

+ SetStyle func(style Style)

+ type BarChart struct

+ Background Style

+ BarSpacing int

+ BarWidth int

+ Bars []Value

+ BaseValue float64

+ Canvas Style

+ ColorPalette ColorPalette

+ DPI float64

+ Elements []Renderable

+ Font *truetype.Font

+ Height int

+ Title string

+ TitleStyle Style

+ UseBaseValue bool

+ Width int

+ XAxis Style

+ YAxis YAxis

+ func (bc BarChart) GetBarSpacing() int

+ func (bc BarChart) GetBarWidth() int

+ func (bc BarChart) GetColorPalette() ColorPalette

+ func (bc BarChart) GetDPI() float64

+ func (bc BarChart) GetFont() *truetype.Font

+ func (bc BarChart) GetHeight() int

+ func (bc BarChart) GetWidth() int

+ func (bc BarChart) Render(rp RendererProvider, w io.Writer) error

+ type BollingerBandsSeries struct

+ InnerSeries ValuesProvider

+ K float64

+ Name string

+ Period int

+ Style Style

+ YAxis YAxisType

+ func (bbs *BollingerBandsSeries) GetBoundedLastValues() (x, y1, y2 float64)

+ func (bbs *BollingerBandsSeries) GetBoundedValues(index int) (x, y1, y2 float64)

+ func (bbs *BollingerBandsSeries) Render(r Renderer, canvasBox Box, xrange, yrange Range, defaults Style)

+ func (bbs BollingerBandsSeries) GetK(defaults ...float64) float64

+ func (bbs BollingerBandsSeries) GetName() string

+ func (bbs BollingerBandsSeries) GetPeriod() int

+ func (bbs BollingerBandsSeries) GetStyle() Style

+ func (bbs BollingerBandsSeries) GetYAxis() YAxisType

+ func (bbs BollingerBandsSeries) Len() int

+ func (bbs BollingerBandsSeries) Validate() error

+ type BoundedLastValuesProvider interface

+ GetBoundedLastValues func() (x, y1, y2 float64)

+ type BoundedValuesProvider interface

+ GetBoundedValues func(index int) (x, y1, y2 float64)

+ Len func() int

+ type Box struct

+ Bottom int

+ IsSet bool

+ Left int

+ Right int

+ Top int

+ func NewBox(top, left, right, bottom int) Box

+ func (b Box) Aspect() float64

+ func (b Box) Center() (x, y int)

+ func (b Box) Clone() Box

+ func (b Box) Constrain(other Box) Box

+ func (b Box) Corners() BoxCorners

+ func (b Box) Equals(other Box) bool

+ func (b Box) Fit(other Box) Box

+ func (b Box) GetBottom(defaults ...int) int

+ func (b Box) GetLeft(defaults ...int) int

+ func (b Box) GetRight(defaults ...int) int

+ func (b Box) GetTop(defaults ...int) int

+ func (b Box) Grow(other Box) Box

+ func (b Box) Height() int

+ func (b Box) IsBiggerThan(other Box) bool

+ func (b Box) IsSmallerThan(other Box) bool

+ func (b Box) IsZero() bool

+ func (b Box) OuterConstrain(bounds, other Box) Box

+ func (b Box) Shift(x, y int) Box

+ func (b Box) String() string

+ func (b Box) Width() int

+ type BoxCorners struct

+ BottomLeft Point

+ BottomRight Point

+ TopLeft Point

+ TopRight Point

+ func (bc BoxCorners) Box() Box

+ func (bc BoxCorners) Center() (x, y int)

+ func (bc BoxCorners) Equals(other BoxCorners) bool

+ func (bc BoxCorners) Height() int

+ func (bc BoxCorners) Rotate(thetaDegrees float64) BoxCorners

+ func (bc BoxCorners) String() string

+ func (bc BoxCorners) Width() int

+ type Chart struct

+ Background Style

+ Canvas Style

+ ColorPalette ColorPalette

+ DPI float64

+ Elements []Renderable

+ Font *truetype.Font

+ Height int

+ Log Logger

+ Series []Series

+ Title string

+ TitleStyle Style

+ Width int

+ XAxis XAxis

+ YAxis YAxis

+ YAxisSecondary YAxis

+ func (c Chart) Box() Box

+ func (c Chart) GetColorPalette() ColorPalette

+ func (c Chart) GetDPI(defaults ...float64) float64

+ func (c Chart) GetFont() *truetype.Font

+ func (c Chart) GetHeight() int

+ func (c Chart) GetWidth() int

+ func (c Chart) Render(rp RendererProvider, w io.Writer) error

+ type ColorPalette interface

+ AxisStrokeColor func() drawing.Color

+ BackgroundColor func() drawing.Color

+ BackgroundStrokeColor func() drawing.Color

+ CanvasColor func() drawing.Color

+ CanvasStrokeColor func() drawing.Color

+ GetSeriesColor func(index int) drawing.Color

+ TextColor func() drawing.Color

+ type ColorProvider func(v, vmin, vmax float64) drawing.Color

+ type ConcatSeries []Series

+ func (cs ConcatSeries) GetValue(index int) (x, y float64)

+ func (cs ConcatSeries) Len() int

+ func (cs ConcatSeries) Validate() error

+ type ContinuousRange struct

+ Descending bool

+ Domain int

+ Max float64

+ Min float64

+ func (r *ContinuousRange) SetDomain(domain int)

+ func (r *ContinuousRange) SetMax(max float64)

+ func (r *ContinuousRange) SetMin(min float64)

+ func (r ContinuousRange) GetDelta() float64

+ func (r ContinuousRange) GetDomain() int

+ func (r ContinuousRange) GetMax() float64

+ func (r ContinuousRange) GetMin() float64

+ func (r ContinuousRange) IsDescending() bool

+ func (r ContinuousRange) IsZero() bool

+ func (r ContinuousRange) String() string

+ func (r ContinuousRange) Translate(value float64) int

+ type ContinuousSeries struct

+ Name string

+ Style Style

+ XValueFormatter ValueFormatter

+ XValues []float64

+ YAxis YAxisType

+ YValueFormatter ValueFormatter

+ YValues []float64

+ func (cs ContinuousSeries) GetFirstValues() (float64, float64)

+ func (cs ContinuousSeries) GetLastValues() (float64, float64)

+ func (cs ContinuousSeries) GetName() string

+ func (cs ContinuousSeries) GetStyle() Style

+ func (cs ContinuousSeries) GetValueFormatters() (x, y ValueFormatter)

+ func (cs ContinuousSeries) GetValues(index int) (float64, float64)

+ func (cs ContinuousSeries) GetYAxis() YAxisType

+ func (cs ContinuousSeries) Len() int

+ func (cs ContinuousSeries) Render(r Renderer, canvasBox Box, xrange, yrange Range, defaults Style)

+ func (cs ContinuousSeries) Validate() error

+ type DonutChart struct

+ Background Style

+ Canvas Style

+ ColorPalette ColorPalette

+ DPI float64

+ Elements []Renderable

+ Font *truetype.Font

+ Height int

+ SliceStyle Style

+ Title string

+ TitleStyle Style

+ Values []Value

+ Width int

+ func (pc DonutChart) Box() Box

+ func (pc DonutChart) GetColorPalette() ColorPalette

+ func (pc DonutChart) GetDPI(defaults ...float64) float64

+ func (pc DonutChart) GetFont() *truetype.Font

+ func (pc DonutChart) GetHeight() int

+ func (pc DonutChart) GetWidth() int

+ func (pc DonutChart) Render(rp RendererProvider, w io.Writer) error

+ type DotColorProvider func(xrange, yrange Range, index int, x, y float64) drawing.Color

+ type EMASeries struct

+ InnerSeries ValuesProvider

+ Name string

+ Period int

+ Style Style

+ YAxis YAxisType

+ func (ema *EMASeries) GetFirstValues() (x, y float64)

+ func (ema *EMASeries) GetLastValues() (x, y float64)

+ func (ema *EMASeries) GetValues(index int) (x, y float64)

+ func (ema *EMASeries) Render(r Renderer, canvasBox Box, xrange, yrange Range, defaults Style)

+ func (ema *EMASeries) Validate() error

+ func (ema EMASeries) GetName() string

+ func (ema EMASeries) GetPeriod() int

+ func (ema EMASeries) GetSigma() float64

+ func (ema EMASeries) GetStyle() Style

+ func (ema EMASeries) GetYAxis() YAxisType

+ func (ema EMASeries) Len() int

+ type FirstValuesProvider interface

+ GetFirstValues func() (x, y float64)

+ type FullBoundedValuesProvider interface

+ type FullValuesProvider interface

+ type GridLine struct

+ IsMinor bool

+ Style Style

+ Value float64

+ func GenerateGridLines(ticks []Tick, majorStyle, minorStyle Style) []GridLine

+ func (gl GridLine) Major() bool

+ func (gl GridLine) Minor() bool

+ func (gl GridLine) Render(r Renderer, canvasBox Box, ra Range, isVertical bool, defaults Style)

+ type GridLineProvider interface

+ GetGridLines func(ticks []Tick, isVertical bool, majorStyle, minorStyle Style) []GridLine

+ type HistogramSeries struct

+ InnerSeries ValuesProvider

+ Name string

+ Style Style

+ YAxis YAxisType

+ func (hs HistogramSeries) GetBoundedValues(index int) (x, y1, y2 float64)

+ func (hs HistogramSeries) GetName() string

+ func (hs HistogramSeries) GetStyle() Style

+ func (hs HistogramSeries) GetValues(index int) (x, y float64)

+ func (hs HistogramSeries) GetYAxis() YAxisType

+ func (hs HistogramSeries) Len() int

+ func (hs HistogramSeries) Render(r Renderer, canvasBox Box, xrange, yrange Range, defaults Style)

+ func (hs HistogramSeries) Validate() error

+ type ImageWriter struct

+ func (ir *ImageWriter) Image() (image.Image, error)

+ func (ir *ImageWriter) SetRGBA(i *image.RGBA)

+ func (ir *ImageWriter) Write(buffer []byte) (int, error)

+ type IsZeroable interface

+ IsZero func() bool

+ type LastValuesProvider interface

+ GetLastValues func() (x, y float64)

+ type LinearCoefficientProvider interface

+ Coefficients func() (m, b, stdev, avg float64)

+ type LinearCoefficientSet struct

+ Avg float64

+ B float64

+ M float64

+ StdDev float64

+ func LinearCoefficients(m, b float64) LinearCoefficientSet

+ func NormalizedLinearCoefficients(m, b, stdev, avg float64) LinearCoefficientSet

+ func (lcs LinearCoefficientSet) Coefficients() (m, b, stdev, avg float64)

+ type LinearRegressionSeries struct

+ InnerSeries ValuesProvider

+ Limit int

+ Name string

+ Offset int

+ Style Style

+ YAxis YAxisType

+ func (lrs *LinearRegressionSeries) GetFirstValues() (x, y float64)

+ func (lrs *LinearRegressionSeries) GetLastValues() (x, y float64)

+ func (lrs *LinearRegressionSeries) GetValues(index int) (x, y float64)

+ func (lrs *LinearRegressionSeries) IsZero() bool

+ func (lrs *LinearRegressionSeries) Render(r Renderer, canvasBox Box, xrange, yrange Range, defaults Style)

+ func (lrs *LinearRegressionSeries) Validate() error

+ func (lrs LinearRegressionSeries) Coefficients() (m, b, stdev, avg float64)

+ func (lrs LinearRegressionSeries) GetEndIndex() int

+ func (lrs LinearRegressionSeries) GetLimit() int

+ func (lrs LinearRegressionSeries) GetName() string

+ func (lrs LinearRegressionSeries) GetOffset() int

+ func (lrs LinearRegressionSeries) GetStyle() Style

+ func (lrs LinearRegressionSeries) GetYAxis() YAxisType

+ func (lrs LinearRegressionSeries) Len() int

+ type LinearSeq struct

+ func NewLinearSequence() *LinearSeq

+ func (lg *LinearSeq) WithEnd(end float64) *LinearSeq

+ func (lg *LinearSeq) WithStart(start float64) *LinearSeq

+ func (lg *LinearSeq) WithStep(step float64) *LinearSeq

+ func (lg LinearSeq) End() float64

+ func (lg LinearSeq) GetValue(index int) float64

+ func (lg LinearSeq) Len() int

+ func (lg LinearSeq) Start() float64

+ func (lg LinearSeq) Step() float64

+ type LinearSeries struct

+ InnerSeries LinearCoefficientProvider

+ Name string

+ Style Style

+ XValues []float64

+ YAxis YAxisType

+ func (ls *LinearSeries) GetFirstValues() (x, y float64)

+ func (ls *LinearSeries) GetLastValues() (x, y float64)

+ func (ls *LinearSeries) GetValues(index int) (x, y float64)

+ func (ls *LinearSeries) Render(r Renderer, canvasBox Box, xrange, yrange Range, defaults Style)

+ func (ls LinearSeries) GetEndIndex() int

+ func (ls LinearSeries) GetName() string

+ func (ls LinearSeries) GetStyle() Style

+ func (ls LinearSeries) GetYAxis() YAxisType

+ func (ls LinearSeries) IsZero() bool

+ func (ls LinearSeries) Len() int

+ func (ls LinearSeries) Validate() error

+ type Logger interface

+ Debug func(...interface{})

+ Debugf func(string, ...interface{})

+ Err func(error)

+ Error func(...interface{})

+ Errorf func(string, ...interface{})

+ FatalErr func(error)

+ Info func(...interface{})

+ Infof func(string, ...interface{})

+ func NewLogger(options ...LoggerOption) Logger

+ type LoggerOption = func(*StdoutLogger)

+ func OptLoggerStderr(wr io.Writer) LoggerOption

+ func OptLoggerStdout(wr io.Writer) LoggerOption

+ type MACDLineSeries struct

+ InnerSeries ValuesProvider

+ Name string

+ PrimaryPeriod int

+ SecondaryPeriod int

+ Sigma float64

+ Style Style

+ YAxis YAxisType

+ func (macdl *MACDLineSeries) GetValues(index int) (x float64, y float64)

+ func (macdl *MACDLineSeries) Len() int

+ func (macdl *MACDLineSeries) Render(r Renderer, canvasBox Box, xrange, yrange Range, defaults Style)

+ func (macdl MACDLineSeries) GetName() string

+ func (macdl MACDLineSeries) GetPeriods() (w1, w2 int)

+ func (macdl MACDLineSeries) GetStyle() Style

+ func (macdl MACDLineSeries) GetYAxis() YAxisType

+ func (macdl MACDLineSeries) Validate() error

+ type MACDSeries struct

+ InnerSeries ValuesProvider

+ Name string

+ PrimaryPeriod int

+ SecondaryPeriod int

+ SignalPeriod int

+ Style Style

+ YAxis YAxisType

+ func (macd *MACDSeries) GetValues(index int) (x float64, y float64)

+ func (macd MACDSeries) GetName() string

+ func (macd MACDSeries) GetPeriods() (w1, w2, sig int)

+ func (macd MACDSeries) GetStyle() Style

+ func (macd MACDSeries) GetYAxis() YAxisType

+ func (macd MACDSeries) Len() int

+ func (macd MACDSeries) Validate() error

+ type MACDSignalSeries struct

+ InnerSeries ValuesProvider

+ Name string

+ PrimaryPeriod int

+ SecondaryPeriod int

+ SignalPeriod int

+ Style Style

+ YAxis YAxisType

+ func (macds *MACDSignalSeries) GetValues(index int) (x float64, y float64)

+ func (macds *MACDSignalSeries) Len() int

+ func (macds *MACDSignalSeries) Render(r Renderer, canvasBox Box, xrange, yrange Range, defaults Style)

+ func (macds MACDSignalSeries) GetName() string

+ func (macds MACDSignalSeries) GetPeriods() (w1, w2, sig int)

+ func (macds MACDSignalSeries) GetStyle() Style

+ func (macds MACDSignalSeries) GetYAxis() YAxisType

+ func (macds MACDSignalSeries) Validate() error

+ type MaxSeries struct

+ InnerSeries ValuesProvider

+ Name string

+ Style Style

+ YAxis YAxisType

+ func (ms *MaxSeries) GetValues(index int) (x, y float64)

+ func (ms *MaxSeries) Render(r Renderer, canvasBox Box, xrange, yrange Range, defaults Style)

+ func (ms *MaxSeries) Validate() error

+ func (ms MaxSeries) GetName() string

+ func (ms MaxSeries) GetStyle() Style

+ func (ms MaxSeries) GetYAxis() YAxisType

+ func (ms MaxSeries) Len() int

+ type MinSeries struct

+ InnerSeries ValuesProvider

+ Name string

+ Style Style

+ YAxis YAxisType

+ func (ms *MinSeries) GetValues(index int) (x, y float64)

+ func (ms *MinSeries) Render(r Renderer, canvasBox Box, xrange, yrange Range, defaults Style)

+ func (ms *MinSeries) Validate() error

+ func (ms MinSeries) GetName() string

+ func (ms MinSeries) GetStyle() Style

+ func (ms MinSeries) GetYAxis() YAxisType

+ func (ms MinSeries) Len() int

+ type NameProvider interface

+ GetName func() string

+ type PercentChangeSeries struct

+ InnerSeries PercentChangeSeriesSource

+ Name string

+ Style Style

+ YAxis YAxisType

+ func (pcs PercentChangeSeries) GetFirstValues() (x, y float64)

+ func (pcs PercentChangeSeries) GetLastValues() (x, y float64)

+ func (pcs PercentChangeSeries) GetName() string

+ func (pcs PercentChangeSeries) GetStyle() Style

+ func (pcs PercentChangeSeries) GetValueFormatters() (x, y ValueFormatter)

+ func (pcs PercentChangeSeries) GetValues(index int) (x, y float64)

+ func (pcs PercentChangeSeries) GetYAxis() YAxisType

+ func (pcs PercentChangeSeries) Len() int

+ func (pcs PercentChangeSeries) Render(r Renderer, canvasBox Box, xrange, yrange Range, defaults Style)

+ func (pcs PercentChangeSeries) Validate() error

+ type PercentChangeSeriesSource interface

+ type PieChart struct

+ Background Style

+ Canvas Style

+ ColorPalette ColorPalette

+ DPI float64

+ Elements []Renderable

+ Font *truetype.Font

+ Height int

+ SliceStyle Style

+ Title string

+ TitleStyle Style

+ Values []Value

+ Width int

+ func (pc PieChart) Box() Box

+ func (pc PieChart) GetColorPalette() ColorPalette

+ func (pc PieChart) GetDPI(defaults ...float64) float64

+ func (pc PieChart) GetFont() *truetype.Font

+ func (pc PieChart) GetHeight() int

+ func (pc PieChart) GetWidth() int

+ func (pc PieChart) Render(rp RendererProvider, w io.Writer) error

+ type Point struct

+ X int

+ Y int

+ func (p Point) DistanceTo(other Point) float64

+ func (p Point) Equals(other Point) bool

+ func (p Point) String() string

+ type PolynomialRegressionSeries struct

+ Degree int

+ InnerSeries ValuesProvider

+ Limit int

+ Name string

+ Offset int

+ Style Style

+ YAxis YAxisType

+ func (prs *PolynomialRegressionSeries) GetFirstValues() (x, y float64)

+ func (prs *PolynomialRegressionSeries) GetLastValues() (x, y float64)

+ func (prs *PolynomialRegressionSeries) GetValues(index int) (x, y float64)

+ func (prs *PolynomialRegressionSeries) Render(r Renderer, canvasBox Box, xrange, yrange Range, defaults Style)

+ func (prs *PolynomialRegressionSeries) Validate() error

+ func (prs PolynomialRegressionSeries) GetEndIndex() int

+ func (prs PolynomialRegressionSeries) GetLimit() int

+ func (prs PolynomialRegressionSeries) GetName() string

+ func (prs PolynomialRegressionSeries) GetOffset() int

+ func (prs PolynomialRegressionSeries) GetStyle() Style

+ func (prs PolynomialRegressionSeries) GetYAxis() YAxisType

+ func (prs PolynomialRegressionSeries) Len() int

+ type RGBACollector interface

+ SetRGBA func(i *image.RGBA)

+ type RandomSeq struct

+ func NewRandomSequence() *RandomSeq

+ func (r *RandomSeq) GetValue(_ int) float64

+ func (r *RandomSeq) Len() int

+ func (r *RandomSeq) WithLen(length int) *RandomSeq

+ func (r *RandomSeq) WithMax(max float64) *RandomSeq

+ func (r *RandomSeq) WithMin(min float64) *RandomSeq

+ func (r RandomSeq) Max() *float64

+ func (r RandomSeq) Min() *float64

+ type Range interface

+ GetDelta func() float64

+ GetDomain func() int

+ GetMax func() float64

+ GetMin func() float64

+ IsDescending func() bool

+ SetDomain func(domain int)

+ SetMax func(max float64)

+ SetMin func(min float64)

+ Translate func(value float64) int

+ type Renderable func(r Renderer, canvasBox Box, defaults Style)

+ func Legend(c *Chart, userDefaults ...Style) Renderable

+ func LegendLeft(c *Chart, userDefaults ...Style) Renderable

+ func LegendThin(c *Chart, userDefaults ...Style) Renderable

+ type Renderer interface

+ ArcTo func(cx, cy int, rx, ry, startAngle, delta float64)

+ Circle func(radius float64, x, y int)

+ ClearTextRotation func()

+ Close func()

+ Fill func()

+ FillStroke func()

+ GetDPI func() float64

+ LineTo func(x, y int)

+ MeasureText func(body string) Box

+ MoveTo func(x, y int)

+ QuadCurveTo func(cx, cy, x, y int)

+ ResetStyle func()

+ Save func(w io.Writer) error

+ SetClassName func(string)

+ SetDPI func(dpi float64)

+ SetFillColor func(drawing.Color)

+ SetFont func(*truetype.Font)

+ SetFontColor func(drawing.Color)

+ SetFontSize func(size float64)

+ SetStrokeColor func(drawing.Color)

+ SetStrokeDashArray func(dashArray []float64)

+ SetStrokeWidth func(width float64)

+ SetTextRotation func(radians float64)

+ Stroke func()

+ Text func(body string, x, y int)

+ func PNG(width, height int) (Renderer, error)

+ func SVG(width, height int) (Renderer, error)

+ type RendererProvider func(int, int) (Renderer, error)

+ type SMASeries struct

+ InnerSeries ValuesProvider

+ Name string

+ Period int

+ Style Style

+ YAxis YAxisType

+ func (sma SMASeries) GetFirstValues() (x, y float64)

+ func (sma SMASeries) GetLastValues() (x, y float64)

+ func (sma SMASeries) GetName() string

+ func (sma SMASeries) GetPeriod(defaults ...int) int

+ func (sma SMASeries) GetStyle() Style

+ func (sma SMASeries) GetValues(index int) (x, y float64)

+ func (sma SMASeries) GetYAxis() YAxisType

+ func (sma SMASeries) Len() int

+ func (sma SMASeries) Render(r Renderer, canvasBox Box, xrange, yrange Range, defaults Style)

+ func (sma SMASeries) Validate() error

+ type Seq struct

+ func ValueSequence(values ...float64) Seq

+ func (s Seq) Average() float64

+ func (s Seq) Each(mapfn func(int, float64))

+ func (s Seq) FoldLeft(mapfn func(i int, v0, v float64) float64) (v0 float64)

+ func (s Seq) FoldRight(mapfn func(i int, v0, v float64) float64) (v0 float64)

+ func (s Seq) Map(mapfn func(i int, v float64) float64) Seq

+ func (s Seq) Max() float64

+ func (s Seq) Median() (median float64)

+ func (s Seq) Min() float64

+ func (s Seq) MinMax() (min, max float64)

+ func (s Seq) Normalize() Seq

+ func (s Seq) Percentile(percent float64) (percentile float64)

+ func (s Seq) Reverse() Seq

+ func (s Seq) Sort() Seq

+ func (s Seq) StdDev() float64

+ func (s Seq) Sum() (accum float64)

+ func (s Seq) Values() (output []float64)

+ func (s Seq) Variance() float64

+ type Sequence interface

+ GetValue func(int) float64

+ Len func() int

+ type Series interface

+ GetName func() string

+ GetStyle func() Style

+ GetYAxis func() YAxisType

+ Render func(r Renderer, canvasBox Box, xrange, yrange Range, s Style)

+ Validate func() error

+ type SizeProvider func(xrange, yrange Range, index int, x, y float64) float64

+ type StackedBar struct

+ Name string

+ Values []Value

+ Width int

+ func (sb StackedBar) GetWidth() int

+ type StackedBarChart struct

+ Background Style

+ BarSpacing int

+ Bars []StackedBar

+ Canvas Style

+ ColorPalette ColorPalette

+ DPI float64

+ Elements []Renderable

+ Font *truetype.Font

+ Height int

+ IsHorizontal bool

+ Title string

+ TitleStyle Style

+ Width int

+ XAxis Style

+ YAxis Style

+ func (sbc StackedBarChart) Box() Box

+ func (sbc StackedBarChart) GetBarSpacing() int

+ func (sbc StackedBarChart) GetColorPalette() ColorPalette

+ func (sbc StackedBarChart) GetDPI(defaults ...float64) float64

+ func (sbc StackedBarChart) GetFont() *truetype.Font

+ func (sbc StackedBarChart) GetHeight() int

+ func (sbc StackedBarChart) GetWidth() int

+ func (sbc StackedBarChart) Render(rp RendererProvider, w io.Writer) error

+ type StdoutLogger struct

+ Stderr io.Writer

+ Stdout io.Writer

+ TimeFormat string

+ func (l *StdoutLogger) Debug(arguments ...interface{})

+ func (l *StdoutLogger) Debugf(format string, arguments ...interface{})

+ func (l *StdoutLogger) Err(err error)

+ func (l *StdoutLogger) Error(arguments ...interface{})

+ func (l *StdoutLogger) Errorf(format string, arguments ...interface{})

+ func (l *StdoutLogger) Errorln(arguments ...interface{})

+ func (l *StdoutLogger) FatalErr(err error)

+ func (l *StdoutLogger) Info(arguments ...interface{})

+ func (l *StdoutLogger) Infof(format string, arguments ...interface{})

+ func (l *StdoutLogger) Println(arguments ...interface{})

+ type Stringable interface

+ String func() string

+ type Style struct

+ ClassName string

+ DotColor drawing.Color

+ DotColorProvider DotColorProvider

+ DotWidth float64

+ DotWidthProvider SizeProvider

+ FillColor drawing.Color

+ Font *truetype.Font

+ FontColor drawing.Color

+ FontSize float64

+ Hidden bool

+ Padding Box

+ StrokeColor drawing.Color

+ StrokeDashArray []float64

+ StrokeWidth float64

+ TextHorizontalAlign TextHorizontalAlign

+ TextLineSpacing int

+ TextRotationDegrees float64

+ TextVerticalAlign TextVerticalAlign

+ TextWrap TextWrap

+ func Hidden() Style

+ func Shown() Style

+ func StyleTextDefaults() Style

+ func (s Style) GetClassName(defaults ...string) string

+ func (s Style) GetDotColor(defaults ...drawing.Color) drawing.Color

+ func (s Style) GetDotOptions() Style

+ func (s Style) GetDotWidth(defaults ...float64) float64

+ func (s Style) GetFillAndStrokeOptions() Style

+ func (s Style) GetFillColor(defaults ...drawing.Color) drawing.Color

+ func (s Style) GetFillOptions() Style

+ func (s Style) GetFont(defaults ...*truetype.Font) *truetype.Font

+ func (s Style) GetFontColor(defaults ...drawing.Color) drawing.Color

+ func (s Style) GetFontSize(defaults ...float64) float64

+ func (s Style) GetPadding(defaults ...Box) Box

+ func (s Style) GetStrokeColor(defaults ...drawing.Color) drawing.Color

+ func (s Style) GetStrokeDashArray(defaults ...[]float64) []float64

+ func (s Style) GetStrokeOptions() Style

+ func (s Style) GetStrokeWidth(defaults ...float64) float64

+ func (s Style) GetTextHorizontalAlign(defaults ...TextHorizontalAlign) TextHorizontalAlign

+ func (s Style) GetTextLineSpacing(defaults ...int) int

+ func (s Style) GetTextOptions() Style

+ func (s Style) GetTextRotationDegrees(defaults ...float64) float64

+ func (s Style) GetTextVerticalAlign(defaults ...TextVerticalAlign) TextVerticalAlign

+ func (s Style) GetTextWrap(defaults ...TextWrap) TextWrap

+ func (s Style) InheritFrom(defaults Style) (final Style)

+ func (s Style) IsZero() bool

+ func (s Style) ShouldDrawDot() bool

+ func (s Style) ShouldDrawFill() bool

+ func (s Style) ShouldDrawStroke() bool

+ func (s Style) String() string

+ func (s Style) WriteDrawingOptionsToRenderer(r Renderer)

+ func (s Style) WriteTextOptionsToRenderer(r Renderer)

+ func (s Style) WriteToRenderer(r Renderer)

+ type StyleProvider interface

+ GetStyle func() Style

+ type TextHorizontalAlign int

+ const TextHorizontalAlignCenter

+ const TextHorizontalAlignLeft

+ const TextHorizontalAlignRight

+ const TextHorizontalAlignUnset

+ type TextStyle struct

+ HorizontalAlign TextHorizontalAlign

+ VerticalAlign TextVerticalAlign

+ Wrap TextWrap

+ type TextVerticalAlign int

+ const TextVerticalAlignBaseline

+ const TextVerticalAlignBottom

+ const TextVerticalAlignMiddle

+ const TextVerticalAlignMiddleBaseline

+ const TextVerticalAlignTop

+ const TextVerticalAlignUnset

+ type TextWrap int

+ const TextWrapNone

+ const TextWrapRune

+ const TextWrapUnset

+ const TextWrapWord

+ type Tick struct

+ Label string

+ Value float64

+ func GenerateContinuousTicks(r Renderer, ra Range, isVertical bool, style Style, vf ValueFormatter) []Tick

+ type TickPosition int

+ const TickPositionBetweenTicks

+ const TickPositionUnderTick

+ const TickPositionUnset

+ type Ticks []Tick

+ func (t Ticks) Len() int

+ func (t Ticks) Less(i, j int) bool

+ func (t Ticks) String() string

+ func (t Ticks) Swap(i, j int)

+ type TicksProvider interface

+ GetTicks func(r Renderer, defaults Style, vf ValueFormatter) []Tick

+ type TimeAscending []time.Time

+ func (a TimeAscending) Len() int

+ func (a TimeAscending) Less(i, j int) bool

+ func (a TimeAscending) Swap(i, j int)

+ type TimeDescending []time.Time

+ func (d TimeDescending) Len() int

+ func (d TimeDescending) Less(i, j int) bool

+ func (d TimeDescending) Swap(i, j int)

+ type TimeSeries struct

+ Name string

+ Style Style

+ XValues []time.Time

+ YAxis YAxisType

+ YValues []float64

+ func (ts TimeSeries) GetFirstValues() (x, y float64)

+ func (ts TimeSeries) GetLastValues() (x, y float64)

+ func (ts TimeSeries) GetName() string

+ func (ts TimeSeries) GetStyle() Style

+ func (ts TimeSeries) GetValueFormatters() (x, y ValueFormatter)

+ func (ts TimeSeries) GetValues(index int) (x, y float64)

+ func (ts TimeSeries) GetYAxis() YAxisType

+ func (ts TimeSeries) Len() int

+ func (ts TimeSeries) Render(r Renderer, canvasBox Box, xrange, yrange Range, defaults Style)

+ func (ts TimeSeries) Validate() error

+ type Times []time.Time

+ func (t Times) Array() []time.Time

+ func (t Times) GetValue(index int) float64

+ func (t Times) Len() int

+ func (t Times) Less(i, j int) bool

+ func (t Times) Swap(i, j int)

+ type Value struct

+ Label string

+ Style Style

+ Value float64

+ type Value2 struct

+ Label string

+ Style Style

+ XValue float64

+ YValue float64

+ type ValueBuffer struct

+ func NewValueBuffer(values ...float64) *ValueBuffer

+ func NewValueBufferWithCapacity(capacity int) *ValueBuffer

+ func (b *ValueBuffer) Array() Array

+ func (b *ValueBuffer) Capacity() int

+ func (b *ValueBuffer) Clear()

+ func (b *ValueBuffer) Dequeue() float64

+ func (b *ValueBuffer) Each(mapfn func(int, float64))

+ func (b *ValueBuffer) Enqueue(value float64)

+ func (b *ValueBuffer) GetValue(index int) float64

+ func (b *ValueBuffer) Len() int

+ func (b *ValueBuffer) Peek() float64

+ func (b *ValueBuffer) PeekBack() float64

+ func (b *ValueBuffer) SetCapacity(capacity int)

+ func (b *ValueBuffer) String() string

+ func (b *ValueBuffer) TrimExcess()

+ type ValueFormatter func(v interface{}) string

+ func KValueFormatter(k float64, vf ValueFormatter) ValueFormatter

+ func TimeValueFormatterWithFormat(format string) ValueFormatter

+ type ValueFormatterProvider interface

+ GetValueFormatters func() (x, y ValueFormatter)

+ type Values []Value

+ func (vs Values) Normalize() []Value

+ func (vs Values) Values() []float64

+ func (vs Values) ValuesNormalized() []float64

+ type ValuesProvider interface

+ GetValues func(index int) (float64, float64)

+ Len func() int

+ type XAxis struct

+ GridLines []GridLine

+ GridMajorStyle Style

+ GridMinorStyle Style

+ Name string

+ NameStyle Style

+ Range Range

+ Style Style

+ TickPosition TickPosition

+ TickStyle Style

+ Ticks []Tick

+ ValueFormatter ValueFormatter

+ func HideXAxis() XAxis

+ func (xa XAxis) GetGridLines(ticks []Tick) []GridLine

+ func (xa XAxis) GetName() string

+ func (xa XAxis) GetStyle() Style

+ func (xa XAxis) GetTickPosition(defaults ...TickPosition) TickPosition

+ func (xa XAxis) GetTicks(r Renderer, ra Range, defaults Style, vf ValueFormatter) []Tick

+ func (xa XAxis) GetValueFormatter() ValueFormatter

+ func (xa XAxis) Measure(r Renderer, canvasBox Box, ra Range, defaults Style, ticks []Tick) Box

+ func (xa XAxis) Render(r Renderer, canvasBox Box, ra Range, defaults Style, ticks []Tick)

+ type YAxis struct

+ Ascending bool

+ AxisType YAxisType

+ GridLines []GridLine

+ GridMajorStyle Style

+ GridMinorStyle Style

+ Name string

+ NameStyle Style

+ Range Range

+ Style Style

+ TickStyle Style

+ Ticks []Tick

+ ValueFormatter ValueFormatter

+ Zero GridLine

+ func HideYAxis() YAxis

+ func (ya YAxis) GetGridLines(ticks []Tick) []GridLine

+ func (ya YAxis) GetName() string

+ func (ya YAxis) GetNameStyle() Style

+ func (ya YAxis) GetStyle() Style

+ func (ya YAxis) GetTickStyle() Style

+ func (ya YAxis) GetTicks(r Renderer, ra Range, defaults Style, vf ValueFormatter) []Tick

+ func (ya YAxis) GetValueFormatter() ValueFormatter

+ func (ya YAxis) Measure(r Renderer, canvasBox Box, ra Range, defaults Style, ticks []Tick) Box

+ func (ya YAxis) Render(r Renderer, canvasBox Box, ra Range, defaults Style, ticks []Tick)

+ type YAxisType int

+ const YAxisPrimary

+ const YAxisSecondary

Incompatible versions in this module

v2.0.1+incompatible

Apr 5, 2018

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