# XWUIChartSmoothLine

A smooth line chart: a fixed-type wrapper around `XWUIChart` that connects points with
curved (spline) segments instead of straight ones, giving a flowing line that reads well for
continuous trends. Pass your data as `series` of `{ x, y }` values plus an optional `block`
preset (1-4) and `size` (`sm` / `md` / `lg`); the shared block config also
forwards legend, grid, axis, data-label, line-style, and tooltip toggles. Use it when you
want a softened trend line rather than sharp vertices.

## Basic Usage

Two named series of monthly values drawn as smooth curved lines at the md size preset.

```example
file: examples/BasicUsage.ts
html: examples/BasicUsage.html
title: Basic Usage
description: Two monthly series drawn as curved splines via the smoothLine chart type.
```

## Global Temperature Anomaly

Decadal surface-temperature anomalies per hemisphere, where the smooth curve reads as a flowing, accelerating warming trend.

```example
file: examples/GlobalTemperature.ts
html: examples/GlobalTemperature.html
title: Global Temperature Anomaly
description: Per-hemisphere temperature anomaly by decade drawn as smooth trend curves.
```

## Checkout Conversion Trend

Weekly checkout conversion for desktop versus mobile across a quarter, with hollow points marking each week.

```example
file: examples/ConversionFunnel.ts
html: examples/ConversionFunnel.html
title: Checkout Conversion Trend
description: Desktop vs mobile weekly conversion rates drawn as smooth lines.
```

```api
```