patternUnits

SVG Elements
1. A
2. B-C
3. D
  1. <defs>
  2. <desc>
4. E
  1. <ellipse>
5. F
6. G
7. H
  1. <hkern>
8. I
  1. <image>
9. J-L
  1. <line>
  2. <linearGradient>
10. M
11. N-P
12. Q-R
  1. <radialGradient>
  2. <rect>
13. S
  1. <script>
  2. <set>
  3. <stop>
  4. <style>
  5. <svg>
  6. <switch>
  7. <symbol>
14. T
15. U
  1. <use>
16. V-Z
  1. <view>
  2. <vkern>

The patternUnits attribute indicates which coordinate system to use for the geometry properties of the <pattern> element.

You can use this attribute with the following SVG elements:

<pattern>

Example

html,body,svg { height:100% }

<svg viewBox="0 0 200 100" xmlns="http://www.w3.org/2000/svg">
  <!-- All geometry properties are relative to the current user space -->
  <pattern id="p1" x="12.5" y="12.5" width="25" height="25"
           patternUnits="userSpaceOnUse">
    <circle cx="10" cy="10" r="10" />
  </pattern>

  <!-- All geometry properties are relative to the target bounding box -->
  <pattern id="p2" x=".125" y=".125" width=".25" height=".25"
           patternUnits="objectBoundingBox">
    <circle cx="10" cy="10" r="10" />
  </pattern>

  <!-- Left square with user space tiles -->
  <rect x="10"  y="10" width="80" height="80"
        fill="url(#p1)" />

  <!-- Right square with bounding box tiles -->
  <rect x="110" y="10" width="80" height="80"
        fill="url(#p2)" />
</svg>

pattern

For <pattern>, patternUnits defines the coordinate system in use for the geometry properties (x, y, width and height) of the element.

Value	`userSpaceOnUse` \| `objectBoundingBox`
Default value	`objectBoundingBox`
Animatable	Yes

userSpaceOnUse: This value indicates that all coordinates for the geometry properties refer to the user coordinate system as defined when the pattern was applied.
objectBoundingBox: This value indicates that all coordinates for the geometry properties represent fractions or percentages of the bounding box of the element to which the pattern is applied. A bounding box could be considered the same as if the content of the <pattern> were bound to a "0 0 1 1" viewbox.

Specifications

Specification	Status	Comment
Scalable Vector Graphics (SVG) 2 The definition of 'patternUnits' in that specification.	Candidate Recommendation
Scalable Vector Graphics (SVG) 1.1 (Second Edition) The definition of 'patternUnits' in that specification.	Recommendation	Initial definition

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