The filterUnits attribute defines the coordinate system for the attributes x, y, width and height.
You can use this attribute with the following SVG elements:
| Value | userSpaceOnUse | objectBoundingBox |
|---|---|
| Default value | objectBoundingBox |
| Animatable | Yes |
userSpaceOnUsex, y, width and height represent values in the current coordinate system that results from taking the current user coordinate system in place at the time when the <filter> element is referenced (i.e., the user coordinate system for the element referencing the <filter> element via a filter attribute).
objectBoundingBoxIn that case, x, y, width and height represent fractions or percentages of the bounding box on the referencing element.