# XWUIChartBlandAltman

A statistical agreement chart backed by `XWUIChart` that plots the difference between two measurement methods against their mean, with bias and limit-of-agreement reference lines - the standard tool for comparing how well two methods agree. Provide named `series` of `{ x, y }` points and pick a `block` (1-4) and `size` preset.

## Basic Usage

Two named monthly series rendered as a Bland-Altman agreement plot.

```example
file: examples/BasicUsage.ts
html: examples/BasicUsage.html
title: Basic Usage
description: Two monthly series drawn as a Bland-Altman plot at the md preset.
```

## Blood-Pressure Device Agreement

A wrist cuff compared against a clinical arm monitor, each patient placed by the mean reading and the difference between methods.

```example
file: examples/BloodPressureAgreement.ts
html: examples/BloodPressureAgreement.html
title: Blood-Pressure Device Agreement
description: Bland-Altman agreement of wrist vs arm systolic readings across 18 patients.
```

## Bathroom-Scale Calibration

A smart scale versus a calibrated reference across sixteen weigh-ins, with differences drifting upward at higher weights.

```example
file: examples/ScaleCalibration.ts
html: examples/ScaleCalibration.html
title: Bathroom-Scale Calibration
description: Bland-Altman calibration of a smart scale against a reference, in kilograms.
```

```api
```