Class: CategoricalScale

Defined in: scales/scale.ts:152

A categorical (factor) axis. Internally it is linear over a band domain[-0.5, n-0.5], so factor i sits at the band centre and norm(i) equals the ordinary linear projection — the GPU transform needs no special handling, and a layer plotting at integer indices lands on band centres automatically. "Categorical-ness" lives only in the ticks/labels (one per factor).

Implements

• Scale

Constructors

Constructor

new CategoricalScale(factors?): CategoricalScale;

Defined in: scales/scale.ts:157

Parameters

Parameter	Type	Default value
factors	string[]	[]

Returns

CategoricalScale

Properties

domain

domain: Range;

Defined in: scales/scale.ts:156

Implementation of

Scale.domain

---

factors

factors: string[];

Defined in: scales/scale.ts:155

---

log

readonly log: false = false;

Defined in: scales/scale.ts:154

Implementation of

Scale.log

---

type

readonly type: "categorical" = "categorical";

Defined in: scales/scale.ts:153

Implementation of

Scale.type

Methods

formatTick()

formatTick(value): string;

Defined in: scales/scale.ts:175

Default label formatter for a tick value.

Parameters

Parameter	Type
value	number

Returns

string

Implementation of

Scale.formatTick

---

invert()

invert(t): number;

Defined in: scales/scale.ts:168

Parameters

Parameter	Type
t	number

Returns

number

Implementation of

Scale.invert

---

norm()

norm(value): number;

Defined in: scales/scale.ts:162

Parameters

Parameter	Type
value	number

Returns

number

Implementation of

Scale.norm

---

ticks()

ticks(): Tick[];

Defined in: scales/scale.ts:172

Auto ticks appropriate for this scale type.

Returns

Tick[]

Implementation of

Scale.ticks