@cearth/tools/doc/api/tools.xyz_hpr.tokey.md

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[Home](./index.md) &gt; [@cearth/tools](./tools.md) &gt; [Xyz\_Hpr](./tools.xyz_hpr.md) &gt; [toKey](./tools.xyz_hpr.tokey.md)

## Xyz\_Hpr.toKey() function

**Signature:**

```typescript
function toKey(value: any): string | undefined;
```

## Parameters

<table><thead><tr><th>

Parameter


</th><th>

Type


</th><th>

Description


</th></tr></thead>
<tbody><tr><td>

value


</td><td>

any


</td><td>


</td></tr>
</tbody></table>
**Returns:**

string \| undefined