# XWUIChartOriginDestinationFlowMap

An origin-destination flow map backed by `XWUIChart` that draws weighted arcs from origins to destinations, used to visualise trips or transfers between places sized by volume. Its data is graph-shaped: supply `nodes` (each with a `name` and `value`) and `links` (each `{ source, target, value }`), plus an empty `series`; you also pick a `block` (1-4) variant and a `size` preset.

## Basic Usage

Five nodes (sources A/B, a `Mid` hub, sinks X/Y) and four weighted links routing flow through `Mid` (60+40 in, 55+45 out).

```example
file: examples/BasicUsage.ts
html: examples/BasicUsage.html
title: Basic Usage
description: An origin-destination flow with five nodes and four weighted links through a hub at the md preset.
```

## Airport Connecting Flights

An origin-destination map of connecting passenger flow routed through hub airports to onward destinations.

```example
file: examples/AirportConnections.ts
html: examples/AirportConnections.html
title: Airport Connecting Flights
description: Passenger flow (thousands) from LA and Chicago through the Atlanta and Dallas hubs onward to JFK, Miami and Boston, lg preset, block 2.
```

## Supply Chain Flow

An origin-destination flow tracing weekly container shipments from factories through warehouses to retail regions.

```example
file: examples/SupplyChainFlow.ts
html: examples/SupplyChainFlow.html
title: Supply Chain Flow
description: Shenzhen and Guadalajara factories through the Rotterdam and Memphis warehouses out to Germany and US retail, md preset, block 3.
```

```api
```