Versions in this module Expand all Collapse all v0 v0.3.1 Aug 6, 2024 v0.3.0 Aug 6, 2024 v0.2.15 Aug 6, 2024 v0.2.13 Aug 6, 2024 v0.2.12 Aug 6, 2024 v0.2.11 Jul 5, 2024 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 ExponentialValueFormatter(v interface{}) string + 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 LogarithmicRange struct + Descending bool + Domain int + Max float64 + Min float64 + func (r *LogarithmicRange) SetDomain(domain int) + func (r *LogarithmicRange) SetMax(max float64) + func (r *LogarithmicRange) SetMin(min float64) + func (r LogarithmicRange) GetDelta() float64 + func (r LogarithmicRange) GetDomain() int + func (r LogarithmicRange) GetMax() float64 + func (r LogarithmicRange) GetMin() float64 + func (r LogarithmicRange) GetTicks(render Renderer, defaults Style, vf ValueFormatter) []Tick + func (r LogarithmicRange) IsDescending() bool + func (r LogarithmicRange) IsZero() bool + func (r LogarithmicRange) String() string + func (r LogarithmicRange) Translate(value float64) int + 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
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