var (// ColorOrange is orange.ColorOrange =drawing.Color{R: 255, G: 165, B: 0, A: 255}// ColorGreen is green.ColorGreen =drawing.Color{R: 0, G: 255, B: 0, A: 255})

funcColorImageToDrawing¶

func ColorImageToDrawing(colcolor.RGBA)drawing.Color

ColorImageToDrawing converts a `color.RGBA` valueto a `drawing.Color` value.

funcGridLines¶

func GridLines(values []float64, stylechartdraw.Style) []chartdraw.GridLine

GridLines creates a `[]chartdraw.GridLine` from a slice of `int64`and a style.

funcMustParseColor¶

func MustParseColor(colorNamestring)drawing.Color

MustParseColor returns a `drawing.Color` for theSVG color name. If the color name is not found,black is returned.

funcParseColor¶

func ParseColor(colorNamestring) (drawing.Color,error)

ParseColor returns a `drawing.Color` for theSVG color name. If the color name is not found,an error is returned.

funcTSSToChart¶

func TSSToChart(datatimeseries.TimeSeriesSet, optsChartOptions)chartdraw.Chart

TSSToChart converts a `TimeSeriesSet` to a `wcharczuk.Chart`.

funcTicks¶

func Ticks(tickValues []float64, fnstrconvutil.Float64ToString) []chartdraw.Tick

Ticks converts a slice of `float64` to a slice of `chartdraw.Tick`. Commonformatting functions include `strconvutil.Commify` and`strconvutil.Int64Abbreviation`.

funcTicksAndGridlinesTime¶

func TicksAndGridlinesTime(intervaltimeutil.Interval, timeStart, timeEndtime.Time, styleMajor, styleMinorchartdraw.Style, timeFormat func(time.Time)string, tickInterval, gridIntervaltimeutil.Interval) ([]chartdraw.Tick, []chartdraw.GridLine,error)

TicksAndGridlinesTime takes a start and end time and converts it to`[]chartdraw.Tick` and `[]chartdraw.GridLine.`.

funcTicksInt64¶

func TicksInt64(tickValues []int64, fnstrconvutil.Int64ToString) []chartdraw.Tick

TicksInt64 converts a slice of `int64` to a slice of `chartdraw.Tick`. Commonformatting functions include `strconvutil.Commify` and`strconvutil.Int64Abbreviation`.

funcTimeSeriesMapToContinuousSeriesMonths¶

func TimeSeriesMapToContinuousSeriesMonths(dsm map[string]timeseries.TimeSeries, order []string) ([]chartdraw.ContinuousSeries,error)

funcTimeSeriesMapToContinuousSeriesQuarters¶

func TimeSeriesMapToContinuousSeriesQuarters(dsm map[string]timeseries.TimeSeries, order []string) ([]chartdraw.ContinuousSeries,error)

funcTimeSeriesToContinuousSeries¶

func TimeSeriesToContinuousSeries(dstimeseries.TimeSeries) (chartdraw.ContinuousSeries,error)

funcTimeSeriesToContinuousSeriesQuarter¶

func TimeSeriesToContinuousSeriesQuarter(dstimeseries.TimeSeries) (chartdraw.ContinuousSeries,error)

funcWritePNG¶

func WritePNG(wio.Writer, cChartType)error

funcWritePNGFile¶added inv2.18.1

func WritePNGFile(filenamestring, cChartType)error

typeChartOptions¶

type ChartOptions struct {LegendEnableboolYAxisLeftboolXAxisTimeLayoutstring}

typeChartType¶

type ChartType interface {Render(rpchartdraw.RendererProvider, wio.Writer)error}

typeColors¶

type Colors struct {BackgroundColorValdrawing.ColorBackgroundStrokeColorValdrawing.ColorCanvasColorValdrawing.ColorCanvasStrokeColorValdrawing.ColorAxisStrokeColorValdrawing.ColorTextColorValdrawing.ColorSeriesColorValdrawing.Color}

func ColorsDefault()Colors

func (cColors) AxisStrokeColor()drawing.Color

func (cColors) BackgroundColor()drawing.Color

func (cColors) BackgroundStrokeColor()drawing.Color

func (cColors) CanvasColor()drawing.Color

func (cColors) CanvasStrokeColor()drawing.Color

func (cColors) GetSeriesColor(indexint)drawing.Color

func (cColors) TextColor()drawing.Color

typeTable¶added inv2.18.0

type Table struct {Table *tablef64.Table}

func (tbl *Table) BoxPlot(values []float64) (*plotter.BoxPlot,error)

func (tbl *Table) BoxPlotColNameWritePNGFile(filename, title, colNamestring)error

func (tbl *Table) ScatterPlot(title, xColName, yColNamestring, dotWidthfloat64) (chartdraw.Chart,error)

func (tbl *Table) ScatterPlotWritePNG(wio.Writer, title, xColName, yColNamestring, dotWidthfloat64)error

func (tbl *Table) ScatterPlotWritePNGFile(filename, title, xColName, yColNamestring, dotWidthfloat64)error

typeTimeFormatter¶

type TimeFormatter struct {Layoutstring// time format string}

TimeFormatter provides a struct that satisifies the`github.com/wcharczuk/go-chart.ValueFormatter` interfaceusing a given time layout string.

func (tvf *TimeFormatter) FormatTime(vany)string