@urban-toolkit/autk-plot

---

@urban-toolkit/autk-plot / PlotBaseData

Abstract Class: PlotBaseData

Defined in: plot-base-data.ts:47

Base class for shared plot data lifecycle.

Normalizes input rows, validates configured bindings, runs transforms, and resolves the active rendered schema used by subclasses during drawing.

Extended by

• PlotBaseInteractive

Constructors

Constructor

new PlotBaseData(config): PlotBaseData

Defined in: plot-base-data.ts:100

Initializes shared plot data state from a plot configuration.

Parameters

config

PlotConfig

Plot configuration containing source data, bindings, and transform/display options.

Returns

PlotBaseData

Throws

If attributes.axis is empty or configured bindings are missing/invalid.

Throws

If @transform placeholder is used without a transform config.

Properties

_axisLabels

protected _axisLabels: string[]

Defined in: plot-base-data.ts:61

User-facing axis labels.

---

_categoricalColorMapInterpolator

protected _categoricalColorMapInterpolator: ColorMapInterpolator = ColorMapInterpolator.CAT_OBSERVABLE10

Defined in: plot-base-data.ts:91

Color interpolator used when the color attribute contains categorical (string) values.

---

_colorMapInterpolator

protected _colorMapInterpolator: ColorMapInterpolator = ColorMapInterpolator.SEQ_REDS

Defined in: plot-base-data.ts:89

Color interpolator used for continuous (numeric) color encoding.

---

_data

protected _data: object & object[]

Defined in: plot-base-data.ts:54

Normalized render rows bound to marks.

---

_div

protected _div: HTMLElement

Defined in: plot-base-data.ts:49

Host element where the plot is rendered.

---

_domainSpec

protected _domainSpec: ColorMapDomainSpec | undefined = undefined

Defined in: plot-base-data.ts:87

Domain specification for color encoding (from config).

---

_height

protected _height: number = 500

Defined in: plot-base-data.ts:76

Outer plot height in pixels.

---

_margins

protected _margins: PlotMargins

Defined in: plot-base-data.ts:78

Plot margins in pixels.

---

_resolvedDomain

protected _resolvedDomain: ResolvedDomain | undefined = undefined

Defined in: plot-base-data.ts:81

Resolved color domain, computed from data after each transform.

---

_sourceFeatures

protected _sourceFeatures: Feature<Geometry, GeoJsonProperties>[]

Defined in: plot-base-data.ts:52

Original source features from the input collection, indexed by source feature id.

---

_tickFormats

protected _tickFormats: string[]

Defined in: plot-base-data.ts:71

D3 tick-format specifiers used by axis renderers.

---

_title

protected _title: string

Defined in: plot-base-data.ts:69

Plot title text.

---

_transformAttributes

protected _transformAttributes: string[] | undefined = undefined

Defined in: plot-base-data.ts:59

Dot-path attributes used to read values from transformed rows, when applicable.

---

_transformColorAttribute

protected _transformColorAttribute: string | null | undefined = undefined

Defined in: plot-base-data.ts:66

Dot-path attribute used for color encoding on transformed rows, when applicable.

---

_transformConfig?

protected optional _transformConfig?: PlotTransformConfig

Defined in: plot-base-data.ts:84

Optional transform config shared by plot implementations that support transformed views.

---

_width

protected _width: number = 800

Defined in: plot-base-data.ts:74

Outer plot width in pixels.

Accessors

renderAxisAttributes

Get Signature

get protected renderAxisAttributes(): string[]

Defined in: plot-base-data.ts:293

Returns the active axis bindings for rendered rows.

Returns

string[]

---

renderColorAttribute

Get Signature

get protected renderColorAttribute(): string | undefined

Defined in: plot-base-data.ts:300

Returns the active color binding for rendered rows.

Returns

string | undefined

Methods

afterDataRefresh()

protected afterDataRefresh(): void

Defined in: plot-base-data.ts:262

Lifecycle hook invoked after _data has been refreshed but before render-time validation and color-domain computation.

Returns

void

---

computeColorDomain()

protected computeColorDomain(): void

Defined in: plot-base-data.ts:324

Computes and caches the active color domain from rendered rows.

Returns

void

---

draw()

draw(): void

Defined in: plot-base-data.ts:152

Rebuilds source rows, applies transforms, validates bindings, and delegates rendering.

Returns

void

Throws

If active render bindings do not resolve on the rendered data.

---

render()

abstract render(): void

Defined in: plot-base-data.ts:267

Renders plot DOM, SVG, or HTML nodes for the current internal state.

Returns

void

---

resolveTransformResult()

protected resolveTransformResult(result): ResolvedPlotTransform

Defined in: plot-base-data.ts:276

Maps a preset-specific executed transform into the rendered row schema expected by plot implementations.

Parameters

result

ExecutedPlotTransform

Executed transform payload returned by the shared dispatcher.

Returns

ResolvedPlotTransform

Normalized rendered rows plus any transformed binding metadata.

---

setRenderColorAttribute()

protected setRenderColorAttribute(attribute): void

Defined in: plot-base-data.ts:312

Updates the active render-time color binding.

Parameters

attribute

string | undefined

Dot-path attribute to use for color, or undefined to clear it.

Returns

void