# XWUIChartFrequencyPolygon

A frequency-polygon chart variant backed by `XWUIChart` that connects bin frequencies with straight line segments, giving a histogram's distribution as a single outline that is easy to overlay and compare. Provide named `series` of `{ x, y }` points and choose a `block` (1-4) and `size` preset.

## Basic Usage

Two named monthly series (Series A and Series B), each spanning Jan through Jun, traced as frequency polygons.

```example
file: examples/BasicUsage.ts
html: examples/BasicUsage.html
title: Basic Usage
description: Two six-month series rendered as a frequency polygon at the md preset.
```

## Population Age Profile

An aging country and a young country overlaid as age-band polygons - a demographics comparison where the two silhouettes tell the story.

```example
file: examples/AgePyramidOverlay.ts
html: examples/AgePyramidOverlay.html
title: Population Age Profile
description: Two countries' population shares per age band traced as overlapping polygons.
```

## Defect Size Distribution

Manufactured-part defect sizes before and after a process change, the "after" curve shifted toward smaller defects.

```example
file: examples/DefectSize.ts
html: examples/DefectSize.html
title: Defect Size Distribution
description: Quality-control defect-size frequencies compared before and after process tuning.
```

```api
```