refract

Sep 8, 2026

Changes in this version

+ const Area

+ const Colorbar

+ const DefaultDuration

+ const Label

+ const LegendRow

+ const Select

+ const SizeKey

+ const Vertex

+ var ErrNoTweens = errors.New("refract: a transition needs at least one tween")

+ func EaseIn(f float64) float64

+ func EaseInOut(f float64) float64

+ func EaseLinear(f float64) float64

+ func EaseOut(f float64) float64

+ type Brush struct

+ Fill ir.Color

+ Rect ir.Rect

+ Stroke ir.Color

+ Width float32

+ func (br *Brush) DrawOverlay(b ir.Backend, f OverlayFrame)

+ type Crosshair struct

+ At ir.Point

+ Color ir.Color

+ Dash []float32

+ NoHorizontal bool

+ NoVertical bool

+ Panel int

+ Show bool

+ Width float32

+ func (c *Crosshair) DrawOverlay(b ir.Backend, f OverlayFrame)

+ type Drag uint8

+ const DragPans

+ const DragSelects

+ const DragZooms

+ func (d Drag) String() string

+ type Easing func(f float64) float64

+ type Highlight struct

+ At []ir.Point

+ Color ir.Color

+ Panel int

+ Radius float32

+ Width float32

+ func (h *Highlight) DrawOverlay(b ir.Backend, f OverlayFrame)

type Input

+ func (i *Input) Drag(d Drag) *Input

+ func (i *Input) Dragged() (ir.Rect, bool)

+ type Kind = interact.Kind

type Live

+ func (l *Live) CurrentOverlay() Overlay

+ func (l *Live) Hide(layer int, hide bool) error

+ func (l *Live) IsHidden(layer int) bool

+ func (l *Live) Overlay(o Overlay) *Live

+ func (l *Live) Select(r ir.Rect) []Event

+ func (l *Live) SetView(v View) error

+ func (l *Live) ShowAll() error

+ func (l *Live) Toggle(layer int) error

+ func (l *Live) Transition(tweens ...*data.Tween) (*Transition, error)

+ func (l *Live) View() View

+ type Overlay = render.Overlay

+ type OverlayFrame = render.OverlayFrame

+ type OverlayPanel = render.OverlayPanel

+ type Overlays []Overlay

+ func (os Overlays) DrawOverlay(b ir.Backend, f OverlayFrame)

type Plot

+ func (p *Plot) HideLayer(layer int, hide bool) *Plot

+ func (p *Plot) Layers() []geom.Geom

+ func (p *Plot) Overlay(o Overlay) *Plot

+ func (p *Plot) SetLayers(gs ...geom.Geom) *Plot

+ type RowRef = interact.RowRef

+ type Tooltip struct

+ At ir.Point

+ Color ir.Color

+ Fill ir.Color

+ Lines []string

+ Offset float32

+ Pad float32

+ Size float64

+ Stroke ir.Color

+ func (t *Tooltip) DrawOverlay(b ir.Backend, f OverlayFrame)

+ type Transition struct

+ func (tr *Transition) Advance(now time.Time) (running bool, err error)

+ func (tr *Transition) At(f float64) error

+ func (tr *Transition) Done() bool

+ func (tr *Transition) Ease(e Easing) *Transition

+ func (tr *Transition) Finish() error

+ func (tr *Transition) Fraction() float64

+ func (tr *Transition) Over(d time.Duration) *Transition

+ func (tr *Transition) Rescale(on bool) *Transition

+ type View struct

+ func (v View) Empty() bool

+ func (v View) Panels() int

Sep 7, 2026

Changes in this version

type Option

+ func Locale(l *scale.Locale) Option

+ func X2Title(s string) Option

+ func Y2Title(s string) Option

type Plot

+ func (p *Plot) X2(s scale.Scale) *Plot

+ func (p *Plot) Y2(s scale.Scale) *Plot

Sep 7, 2026

Changes in this version

+ const DefaultTrackSize

+ var ErrTrackWithFacet = errors.New("refract: a plot cannot have both a track and a facet")

+ type Edge int

+ const Bottom

+ const Left

+ const Right

+ const Top

+ func (e Edge) String() string

type GridOption

+ func GridColWidths(w ...float32) GridOption

+ func GridRowHeights(h ...float32) GridOption

+ func GridSharedX(on bool) GridOption

+ func GridSharedY(on bool) GridOption

type Plot

+ func (p *Plot) Track(e Edge, opts ...TrackOption) *Track

+ func (p *Plot) Tracks() []*Track

+ type Track struct

+ func (t *Track) Add(gs ...geom.Geom) *Track

+ func (t *Track) Edge() Edge

+ type TrackOption func(*Track)

+ func TrackAxis(show bool) TrackOption

+ func TrackFraction(f float32) TrackOption

+ func TrackGrid(show bool) TrackOption

+ func TrackScale(s scale.Scale) TrackOption

+ func TrackSize(px float32) TrackOption

Sep 5, 2026

Changes in this version

type Option

+ func Coord(c coordpkg.Coord) Option

Sep 4, 2026

Changes in this version

+ const DefaultClickSlop

+ func WheelFactor(delta float64) float64

type GridOption

+ func GridDescription(title, detail string) GridOption

+ func GridMath(ts mathtext.Typesetter) GridOption

+ type Input struct

+ func (i *Input) ClickSlop(px float64) *Input

+ func (i *Input) DoubleClick() error

+ func (i *Input) Down(x, y float64) error

+ func (i *Input) Dragging() bool

+ func (i *Input) Leave() error

+ func (i *Input) Live() *Live

+ func (i *Input) Move(x, y float64) error

+ func (i *Input) Rescale(dpr float64) error

+ func (i *Input) Resize(w, h int) error

+ func (i *Input) Up(x, y float64) error

+ func (i *Input) Wheel(x, y, delta float64) error

type Live

+ func (l *Live) DPR() float64

+ func (l *Live) Input() *Input

+ func (l *Live) Rescale(dpr float64) error

+ func (l *Live) Resize(w, h int) error

+ func (l *Live) Size() (w, h int)

type Option

+ func Description(title, detail string) Option

+ func Math(ts mathtext.Typesetter) Option

+ func Responsive(on bool) Option

+ func ResponsiveFrom(w, h int) Option

type Plot

+ func (p *Plot) DataTable(w io.Writer) error

+ func (p *Plot) Describe() a11y.Summary

+ func (p *Plot) Description() ir.Description

+ func (p *Plot) Size() (w, h int)

Sep 4, 2026

Changes in this version

+ const Click

+ const Hover

+ const Leave

+ const Pan

+ const Zoom

+ type Event = interact.Event

+ type EventKind = interact.EventKind

+ type Hit = interact.Hit

+ type Live struct

+ func (l *Live) Autoscale() error

+ func (l *Live) Bind(el js.Value) (unbind func())

+ func (l *Live) Click(x, y float64) Event

+ func (l *Live) Close() error

+ func (l *Live) Draw() error

+ func (l *Live) Index() *interact.Index

+ func (l *Live) Leave() Event

+ func (l *Live) Move(x, y float64) Event

+ func (l *Live) PanBy(dx, dy float64) error

+ func (l *Live) Rebuild() error

+ func (l *Live) TrackRows(on bool) *Live

+ func (l *Live) Wheel(x, y, factor float64) error

+ func (l *Live) ZoomTo(r ir.Rect) error

type Plot

+ func FromSpec(s spec.Spec) (*Plot, error)

+ func ParseJSON(b []byte) (*Plot, error)

+ func (p *Plot) Live(t Target) (*Live, error)

+ func (p *Plot) MarshalJSON() ([]byte, error)

+ func (p *Plot) On(kind EventKind, h func(Event)) *Plot

+ func (p *Plot) Spec() (spec.Spec, error)

+ func (p *Plot) UnmarshalJSON(b []byte) error

Sep 4, 2026

Changes in this version

type GridOption

+ func GridParallel(on bool) GridOption

type Option

+ func Parallel(on bool) Option

Sep 4, 2026

Changes in this version

+ var ErrEmptyGrid = errors.New("refract: grid has no plots")

+ type Grid struct

+ func NewGrid(cols int, opts ...GridOption) *Grid

+ func (g *Grid) Add(ps ...*Plot) *Grid

+ func (g *Grid) At(row, col int, p *Plot) *Grid

+ func (g *Grid) Render(t Target) (err error)

+ type GridOption func(*Grid)

+ func GridAxisTitles(x, y string) GridOption

+ func GridDPR(r float64) GridOption

+ func GridLegend(show bool) GridOption

+ func GridSize(w, h int) GridOption

+ func GridTheme(t themepkg.Theme) GridOption

+ func GridTitle(s string) GridOption

type Plot

+ func (p *Plot) Facet(s *facet.Spec) *Plot

type Target

+ func PDF(path string, opts ...pdf.Option) Target

+ func PDFWriter(w io.Writer, opts ...pdf.Option) Target

Sep 4, 2026

Changes in this version

+ var ErrNoLayers = errors.New("refract: plot has no layers and no scales")

+ func NewTable() *data.Table

+ type Backend = ir.Backend

+ type Option func(*Plot)

+ func DPR(r float64) Option

+ func Legend(show bool) Option

+ func Size(w, h int) Option

+ func Theme(t themepkg.Theme) Option

+ func Title(s string) Option

+ func XTitle(s string) Option

+ func YTitle(s string) Option

+ type Plot struct

+ func New(opts ...Option) *Plot

+ func (p *Plot) Add(gs ...geom.Geom) *Plot

+ func (p *Plot) Render(t Target) (err error)

+ func (p *Plot) X(s scale.Scale) *Plot

+ func (p *Plot) Y(s scale.Scale) *Plot

+ type Source = data.Source

+ func Float64Columns(cols map[string][]float64) Source

+ type Target = ir.Target

+ func SVG(path string, opts ...svg.Option) Target

+ func SVGWriter(w io.Writer, opts ...svg.Option) Target