---
title: "Point layer modify min and max size. Apply transparency (point helper) | JavaScript maps SDK"
description: "Modify point layer size and transparency using helper."
---
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# Point layer modify min and max size. Apply transparency (point helper)
This example illustrates the process of adjusting the default point size values for a point layer by utilizing the point layer helper. To replicate this example, download the [earthquake sample data](../../assets/earthquakes.geojson).
Our objective is to modify the default point size values, making smaller points even smaller and larger points even larger. Given that there is often overlap among multiple points, it is necessary to introduce a slight level of transparency.
### NPM module setup
```bash
npm install --save @maptiler/sdk
```
#### main.js
```js
import { Map, MapStyle, config, ColorRampCollection, helpers } from '@maptiler/sdk';
import '@maptiler/sdk/dist/maptiler-sdk.css';
config.apiKey = 'YOUR_MAPTILER_API_KEY_HERE';
const map = new Map({
container: 'map',
zoom: 7.28,
center: [-97.793, 36.504],
style: MapStyle.DATAVIZ.LIGHT
});
map.on('load', async function () {
await helpers.addPoint(map, {
data: 'YOUR_MAPTILER_DATASET_ID_HERE',
property: "mag",
pointColor: ColorRampCollection.VIRIDIS.scale(1, 5),
minPointRadius: 2,
maxPointRadius: 100,
pointOpacity: 0.7,
});
});
```
#### index.html
```html
Point layer modify min and max size. Apply transparency (point helper) | NPM example
```
#### style.css
```css
body {margin: 0; padding: 0;}
#map {position: absolute; top: 0; bottom: 0; width: 100%;}
```
### Basic JavaScript setup
```html
Point helper
```
## Related examples
### [Point layer cluster (point helper)](https://docs.maptiler.com/sdk-js/examples/helper-point-cluster/)
Examples
Add clustered point layer using MapTiler point helper.
### [Heatmap layer (heatmap helper)](https://docs.maptiler.com/sdk-js/examples/helper-heatmap-minimal/)
Examples
Quickly add a heatmap layer using the heatmap helper.
### [Point layer (point helper)](https://docs.maptiler.com/sdk-js/examples/helper-point-minimal/)
Examples
Add minimal point layer using MapTiler point helper.
### [Point layer scaled radius by property (point helper)](https://docs.maptiler.com/sdk-js/examples/helper-point-ramped-property/)
Examples
Scale point layer radius and color by property.