# XWUIChartSpline

A spline chart: a fixed-type wrapper around `XWUIChart` that connects data points with smooth interpolated curves instead of straight segments, giving a flowing line through the series. Supply `{ series }` of `{ x, y }` points plus an optional `block` preset (1-4) and `size`. Use it for continuous trends where a smoothed curve reads more naturally than a jagged polyline.

## Basic Usage

This example renders two series (Series A and Series B) of six monthly values (Jan-Jun) as two smooth interpolated curves at medium size.

```example
file: examples/BasicUsage.ts
html: examples/BasicUsage.html
title: Basic Usage
description: Two monthly series drawn as smooth splines, curving through each month's point rather than connecting them with straight segments.
```

## Semiconductor Stock Prices

Monthly closing prices for two chipmakers, with an interactive spline smoothing the month-to-month swings into a clean trajectory.

```example
file: examples/StockPrice.ts
html: examples/StockPrice.html
title: Semiconductor Stock Prices
description: NVIDIA vs AMD monthly closing prices drawn as interpolated spline curves.
```

## Reservoir Water Levels

Bimonthly reservoir capacity for two lakes across a drought year, where the curve traces the spring refill and summer drawdown.

```example
file: examples/ReservoirLevel.ts
html: examples/ReservoirLevel.html
title: Reservoir Water Levels
description: Capacity of two reservoirs through a drought year drawn as smooth splines.
```

```api
```