---
id: "packages/active-charts/all-exports/scalar-scale"
title: "Scalar scale"
description: "ScalarScaleOption, ScalarScaleOptions, ScalarScaleTicks, ScalarTarget and 1 more: generated from the source of active-charts."
url: "/packages/active-charts/all-exports/scalar-scale"
locale: "en"
revision: "g0mvjxwj5c-88bdbe1c:scalar-scale"
---

# Scalar scale

Exported by `@workspace/active-charts`. Generated from the package source; part of [the index of every export](/packages/active-charts/all-exports).

## Types

**ScalarScaleOption**

```ts
type ScalarScaleOption = boolean | ScalarScaleOptions;
```

A scalar's tick scale (T7): `true` draws ticks at automatic round values,
an object chooses them, `false` or absent draws only the two labelled ends
as before. The ends are always labelled; a tick label gives way to an end
or the target where they would meet, its tick staying. Tick labels use the
readout's notation. Ticks are drawing only: no name, table or CSV row.

**ScalarScaleOptions**

```ts
interface ScalarScaleOptions {
  ticks?: ScalarScaleTicks;
}
```

The scale of a gauge, linear gauge or bullet (T7).

**ScalarScaleTicks**

```ts
type ScalarScaleTicks = 'auto' | readonly number[];
```

Where a scalar's scale ticks sit (T7, ADR-100). `'auto'`: readable round
values, as many as the scale's length gives room for. An array: exactly
these values (a threshold, a policy value), within the range.

**ScalarTarget**

```ts
type ScalarTarget = number | ScalarTargetOptions;
```

One reference value on a scalar (T7): a number, or the value with a name.
Beyond the scale its mark stops at the nearer end while every text keeps
the true number; a value that is not finite is not drawn or stated and is
reported to the host's diagnostics.

**ScalarTargetOptions**

```ts
interface ScalarTargetOptions {
  value: number;
  label?: string;
}
```

A target with its own name (T7).