# kernel

Density map: the kernel profile (`gaussian`, `epanechnikov`, `quartic`, `triangular`, `uniform`).

Canonical: https://chart.syidax.com/docs/options/kernel/

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## Definition

| Item | Value |
| --- | --- |
| JavaScript property | `kernel` |
| HTML attribute | `kernel` |
| Type | `DensityMapKernel` |
| Default | `undefined` |
| Allowed values | `gaussian`, `epanechnikov`, `quartic`, `triangular`, `uniform` |

undefined means this property was not explicitly set. The effective value may depend on the chart type and other settings.

- [DensityMapKernel](https://chart.syidax.com/docs/types/DensityMapKernel.md) — Type definition

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## Configuration example

```javascript
// Register sy-density-map and create the element before configuring it.
chart.kernel = "gaussian";
```

- [Density Map · Complete examples and API](https://chart.syidax.com/docs/components/density-map.md)

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## Related documentation

A property with the same name may have different types and defaults across charts. When using a direct tag, follow that chart's documentation below.

- [Shared facade and direct tags](https://chart.syidax.com/docs/concepts.md)
- [sy-density-map](https://chart.syidax.com/docs/components/density-map.md#property-kernel)