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---
title: pointsAtX
slug: Web/SVG/Attribute/pointsAtX
page-type: svg-attribute
browser-compat: svg.elements.feSpotLight.pointsAtX
---
{{SVGRef}}
The **`pointsAtX`** attribute represents the x location in the coordinate system established by attribute {{SVGAttr("primitiveUnits")}} on the {{SVGElement("filter")}} element of the point at which the light source is pointing.
You can use this attribute with the following SVG elements:
- {{SVGElement("feSpotLight")}}
## Example
```css hidden
html,
body,
svg {
height: 100%;
}
```
```html
<svg viewBox="0 0 420 200" xmlns="http://www.w3.org/2000/svg">
<filter id="lighting1" x="0" y="0" width="100%" height="100%">
<feDiffuseLighting in="SourceGraphic">
<feSpotLight x="60" y="60" z="50" pointsAtX="0" />
</feDiffuseLighting>
</filter>
<filter id="lighting2" x="0" y="0" width="100%" height="100%">
<feDiffuseLighting in="SourceGraphic">
<feSpotLight x="60" y="60" z="50" pointsAtX="400" />
</feDiffuseLighting>
</filter>
<rect x="0" y="0" width="200" height="200" style="filter: url(#lighting1);" />
<rect
x="0"
y="0"
width="200"
height="200"
style="filter: url(#lighting2); transform: translateX(220px);" />
</svg>
```
{{EmbedLiveSample("Example", "220", "220")}}
## Usage notes
<table class="properties">
<tbody>
<tr>
<th scope="row">Default value</th>
<td><code>0</code></td>
</tr>
<tr>
<th scope="row">Value</th>
<td>{{cssxref("number")}}</td>
</tr>
<tr>
<th scope="row">Animatable</th>
<td>Yes</td>
</tr>
</tbody>
</table>
## Specifications
{{Specifications}}
## Browser compatibility
{{Compat}}