# XWUIChartBubble

A scatter-family chart variant backed by `XWUIChart` that plots `{ x, y }` points as bubbles, the classic way to show the relationship between two continuous variables. Provide a `series` of observation points and pick a `block` (1-4) and `size` preset.

## Basic Usage

A single series of 30 randomized observations plotted as bubbles.

```example
file: examples/BasicUsage.ts
html: examples/BasicUsage.html
title: Basic Usage
description: A single series of 30 random observations rendered as a bubble chart at the md preset.
```

## GDP vs Life Expectancy

Labelled country bubbles plot GDP per capita against life expectancy, with grid values, axis labels, and a " yrs" unit on the interactive readout.

```example
file: examples/GdpLifeExpectancy.ts
html: examples/GdpLifeExpectancy.html
title: GDP vs Life Expectancy
description: One bubble per country positioned by GDP per capita (k$) and life expectancy (years).
```

## Marketing Channel ROI

Each marketing channel is a bubble of spend versus ROI, with a break-even annotation line at 100% separating profitable channels from the rest.

```example
file: examples/ChannelRoi.ts
html: examples/ChannelRoi.html
title: Marketing Channel ROI
description: One bubble per channel by spend (k$) and ROI (%), with a 100% break-even line.
```

```api
```