# Pictorial Bar Chart

Source: https://lumeo.nativ.sh/components/charts/pictorial-bar

# Pictorial Bar Chart

A bar chart that uses symbols instead of rectangular bars. Each symbol represents a data point, making the visualization more expressive and engaging.

## Installation

.NET CLI PackageReference Lumeo CLI

dotnet add package Lumeo.Charts

One-time app setup (`AddLumeo()`, CSS & JS) is covered in the [installation guide](docs/introduction).

## Usage

@using Lumeo

<PictorialBarChart />

Preview Code

Daily Steps

Preview Code

Loading state

Simulate loading

Hold skeleton open

Duration: 2s 

Cycle: 1400 ms 

Shape-aware skeleton with reserved space for legend and axes — no layout shift when real data arrives.

## API Reference

### PictorialBarChart

Property

Type

Default

Description

Categories

List<string>

\[\]

X-axis category labels.

Series

List<PictorialSeriesData>

\[\]

Data series with Name, Values, Symbol, and SymbolSize.

ShowLegend

bool

true

Shows or hides the chart legend.

LabelStrategy

ChartLabelStrategy

Smart

How category-axis labels are rendered. Smart auto-rotates at higher densities; ShowAll forces all horizontal; Auto thins overlapping labels.

LabelRotate

int?

null

Manual rotation override in degrees on top of LabelStrategy.

IsLoading

bool

false

When true, renders a shape-matched loading skeleton in place of the chart. Bind to your async fetch state.

ShowLoadingSkeleton

bool

true

Set to false to opt out of the skeleton (chart area stays empty while IsLoading is true).

SkeletonKind

ChartSkeletonKind

(chart default)

Override the skeleton silhouette (Bars, Line, Area, Pie, Scatter, Grid, Generic).

SkeletonStyle

ChartSkeletonStyle

Phantom

Phantom renders the real chart with placeholder data and morphs to real data via ECharts animation. Silhouette falls back to the legacy SVG skeleton overlay.

ShowLoadingLabel

bool

true

Shows a small "Loading…" pill in the top-right corner whenever `IsLoading` is true. Layered on top of any `SkeletonStyle`. Set to false for bare visuals. **(rc.18)**

LoadingText

string?

"Loading…"

Label rendered next to the spinner inside the loading pill. Set to empty to show the spinner alone. **(rc.18)**

ShowTooltip

bool

true

Enables the hover tooltip showing pictorial bar values.

Colors

List<string>?

null

Custom color palette for the pictorial bars.

Width

string

"100%"

Chart container width as a CSS length.

Height

string

"350px"

Chart container height as a CSS length.

Theme

string?

null

ECharts theme name applied to this chart instance.

PhantomCycleMs

int

1400

Phantom-mode refresh interval in milliseconds. Lower = faster data cycling while loading.

ShowDataLabels

bool

false

When true, displays value labels on the pictorial bars.

LabelPosition

string

"top"

Position of data labels relative to each bar symbol.

LabelFormat

string?

null

Optional ECharts label formatter string for data labels.

DataZoom

bool

false

Enables zoom slider for long category axes.

Toolbox

bool

false

Shows the ECharts toolbox with export and zoom controls.

ColorPalette

List<string>?

null

Alternate full color palette applied to the chart.

AnimationDuration

int?

null

Animation duration in milliseconds when data changes.

AnimationEasing

string?

null

ECharts easing function name for animation curves.

MarkLine

EChartMarkLine?

null

Optional mark lines overlaid on the chart (e.g. averages, thresholds).

MarkPoint

EChartMarkPoint?

null

Optional mark points highlighting min/max or custom values.

MarkArea

EChartMarkArea?

null

Optional shaded mark areas highlighting value bands.