# NodeMatcher class

Namespace: [GrasshopperIO.DataBase](https://developer.rhino3d.com/api/gh2/namespace/grasshopperio.database.md) · Assembly: [GrasshopperIO](https://developer.rhino3d.com/api/gh2/assembly/grasshopperio.md)

```cs
public abstract class NodeMatcher
```

A class used for finding matching child-chunks. Use this if you do not wish to merely compare all chunks in an archive using their Locations.

**Derived types:** [DocumentIO.ObjectNodeMatcher](https://developer.rhino3d.com/api/gh2/type/grasshopper2.doc.documentio.objectnodematcher.md)

## Methods

- [Find](https://developer.rhino3d.com/api/gh2/type/grasshopperio.database.nodematcher/find.md): Override this method to provide customised chunk matching. The default behaviour matches chunks based on their Location.