# Particle Layer

Vector variable rendered as animated particle simulation layer

### Example

![Particle Layer](/files/cPtjSWujhGHYn5mfrUnl)

```javascript
import { Deck } from '@deck.gl/core';
import { ClipExtension } from '@deck.gl/extensions';
import * as WeatherLayers from 'weatherlayers-gl';

// load data
const image = await WeatherLayers.loadTextureData(url);

const deckgl = new Deck({
  layers: [
    new WeatherLayers.ParticleLayer({
      id: 'particle',
      // data properties
      image: image,
      bounds: [-180, -90, 180, 90],
      extensions: [new ClipExtension()],
      clipBounds: [-181, -85.051129, 181, 85.051129],
    }),
  ],
});
```

### Data Properties

See [Data properties](/weatherlayers-gl/layers/data.md#data-properties) common for all layers.

### Style Properties

See [Style properties](/weatherlayers-gl/layers/style-properties.md) common for all layers.

#### `numParticles`

Type: number, optional

Default: `5000`

Number of the particles. The greater number of particles, the denser particle trails.

#### `maxAge`

Type: number, optional

Default: `100`

Max age of the particles in frames. The greater max age, the longer particle trails.

#### `speedFactor`

Type: number `0-1`, optional

Default: `1`

Speed factor of the particles. The greater speed factor, the longer particle trails.

#### `width`

Type: `number`, optional

Default: `1`

Width of the line. See [LineLayer getWidth](https://deck.gl/docs/api-reference/layers/line-layer#getwidth).

#### `color`

Type: color `[number, number, number, number?]`, optional

Default: `[255, 255, 255]`

Color of the line. See [LineLayer getColor](https://deck.gl/docs/api-reference/layers/line-layer#getcolor).

#### `palette`

Type: color palette text or array, optional

Palette used to interpolate values to colors.

Formats:

* text (`string`) - see [Text format](https://github.com/weatherlayers/cpt2js#text-format) for details
* array (`[number, PaletteColor][]`) - `PaletteColor` is any object accepted by [Chroma.js constructor](https://vis4.net/chromajs/#chroma)


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