# XWUIChartExponential

An exponential chart: a fixed-type (`exponential`) wrapper around `XWUIChart` that renders series
as exponential growth or decay curves, emphasizing compounding change over a range. Pass `series` of
`{ name, data: [{ x, y }] }` plus an optional `block` preset (1-4) and `size`
(`sm` / `md` / `lg`); the shared block config also exposes legend, grid, axis, data-label,
and tooltip-formatter toggles. Use it for quantities that scale multiplicatively, such as growth
rates or compounding trends.

## Basic Usage

Two named series of monthly values fitted as exponential curves at the md size preset.

```example
file: examples/BasicUsage.ts
html: examples/BasicUsage.html
title: Basic Usage
description: Two monthly series rendered as exponential growth/decay curves.
```

## Compound Interest Growth

A $1,000 balance compounding at 10% a year over a decade, with values formatted as dollars to show
the accelerating gains.

```example
file: examples/CompoundInterest.ts
html: examples/CompoundInterest.html
title: Compound Interest Growth
description: A balance compounding at 10% per year for ten years, formatted in dollars.
```

## Radioactive Decay

An activity level halving every two hours, drawn as a dashed decay curve with a line marking the
half-life value.

```example
file: examples/RadioactiveDecay.ts
html: examples/RadioactiveDecay.html
title: Radioactive Decay
description: Activity decaying geometrically with a dashed line and a half-life marker at 500.
```

```api
```