g6/packages/site/docs/manual/middle/layout/sub-layout-pipe.en.md

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2023-02-02 10:31:36 +08:00
---
title: Sublayout Pipeline
order: 4
---
## Sublayout Pipeline
**Supports by v4.3.0 and latter versions**. Sublayout pipeline supports several sublayouts on different subgraphs by configuring `Graph.layout`.
<img src='https://gw.alipayobjects.com/mdn/rms_f8c6a0/afts/img/A*TaymQYKOJkgAAAAAAAAAAAAAARQnAQ' alt="img" width='400px'>
### Usage
You can configure `layout.pipes` array when initializing the graph instance. Each item in the array is a sublayout pipe, and it contains the infomation about the layout type(`type`), configurations for this layout type, and node filtering function (`nodesFilter`). NOTICE that, if some nodes belong to several sublayouts in the same time, the result positions of these nodes will follow the last sublayout.
The format of the `layout.pipes`:
```javascript
type Pipes =
{
// the name of the layout method for this subgraph
type: 'random' | 'radial' | 'mds' | 'circular' | 'fruchterman' | 'force' | 'gForce' | 'dagre' | 'concentric' | 'grid' | 'forceAtlas2',
// node filtering function, the parameter is the node data, and it returns a boolean to indicate if the node belongs to this subgraph
nodesFilter: (node: NodeData) => boolean;
... // the configurations for this layout method, refer to the docs for different layout method pls
}[];
```
Usage demo:
```javascript
// configure the layout.pipes when initializing the graph instance
const graph = new G6.Graph({
// ... // other graph configurations
layout: {
pipes: [
{
// the name of the layout method for this subgraph
type: 'circular',
// indicate if the node belongs to the subgraph
nodesFilter: (node) => node.subGraphId === '1',
// ... other configurations for this layout method
},
{
type: 'grid',
nodesFilter: (node) => node.subGraphId === '2',
// other configurations for this layout method
begin: [100, 0],
}
]
},
});
```