barchart

Documentation

Overview

Package barchart provides BarChart — a simple labeled bar chart (horizontal bars only, with auto-scaling and value annotations).

Index

• type Bar
• type BarChart
  • func New(bounds geom.Rect) *BarChart
  • func (b *BarChart) Draw()
  • func (b *BarChart) GetTypeID() string
  • func (b *BarChart) SetBars(bars []Bar)

Types

type Bar

type Bar struct {
	Label string
	Value float64
	Attr  uint16 // 0 = use default
}

Bar is a labeled value.

type BarChart

type BarChart struct {
	views.Base

	Bars      []Bar
	ShowValue bool
	BarChar   rune
	BackChar  rune
	BarAttr   uint16
	BackAttr  uint16
	LabelAttr uint16
	ValueAttr uint16
}

BarChart renders a stack of horizontal bars filling a column block. Label is left-aligned, then the bar fills the remaining width proportional to Value / max(Values), then a numeric annotation.

func New

func New(bounds geom.Rect) *BarChart

New constructs a BarChart with no bars.

func (*BarChart) Draw

func (b *BarChart) Draw()

Draw paints the bars.

func (*BarChart) GetTypeID

func (b *BarChart) GetTypeID() string

GetTypeID for serial registry.

func (*BarChart) SetBars

func (b *BarChart) SetBars(bars []Bar)

SetBars replaces the data.