# XWUIChartQuadratic

`XWUIChartQuadratic` is a thin wrapper around `XWUIChart` that pins the chart `type` to `'quadratic'`, rendering each series as a smooth parabola-style curve rather than straight line segments. Hand it a `{ series }` data object and use it when your data follows (or you want to suggest) a second-order, curved relationship - an accelerating rise or a single peak/trough - instead of a linear trend. The `block` (1-4, clamped) and `size` (`sm` / `md` / `lg`) config select the variant and dimensions.

## Basic Usage

This example plots two monthly series (Series A and Series B, Jan-Jun) at `md` size, each drawn with the quadratic curve treatment.

```example
file: examples/BasicUsage.ts
html: examples/BasicUsage.html
title: Basic Usage
description: Two monthly series (Series A and Series B, Jan-Jun) drawn as quadratic curves at medium size.
```

## Projectile Trajectory

Height against horizontal distance for a launched projectile, drawn with a heavier line over a grid so the symmetric parabola and its apex stand out.

```example
file: examples/ProjectileTrajectory.ts
html: examples/ProjectileTrajectory.html
title: Projectile Trajectory
description: A projectile's height-vs-distance parabola at medium size with a grid and 2.25 line weight.
```

## Cost Curve Minimum

A U-shaped average-unit-cost curve over output, annotated with a minimum-cost reference line and a text note marking the efficient scale.

```example
file: examples/CostCurveMinimum.ts
html: examples/CostCurveMinimum.html
title: Cost Curve Minimum
description: Average unit cost vs output with a min-cost line and a text annotation at the efficient scale.
```

```api
```