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exponent

files/en-us/web/svg/reference/attribute/exponent/index.md

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The exponent attribute defines the exponent of the gamma function.

You can use this attribute with the following SVG elements:

  • {{SVGElement("feFuncA")}}
  • {{SVGElement("feFuncB")}}
  • {{SVGElement("feFuncG")}}
  • {{SVGElement("feFuncR")}}

Example

css
html,
body,
svg {
  height: 100%;
}
html
<svg viewBox="0 0 420 200" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <linearGradient
      id="gradient"
      gradientUnits="userSpaceOnUse"
      x1="0"
      y1="0"
      x2="200"
      y2="0">
      <stop offset="0" stop-color="red" />
      <stop offset="0.5" stop-color="lime" />
      <stop offset="1" stop-color="blue" />
    </linearGradient>
  </defs>

  <filter id="componentTransfer1" x="0" y="0" width="100%" height="100%">
    <feComponentTransfer>
      <feFuncR type="gamma" exponent="1" />
      <feFuncG type="gamma" exponent="1" />
      <feFuncB type="gamma" exponent="1" />
    </feComponentTransfer>
  </filter>
  <filter id="componentTransfer2" x="0" y="0" width="100%" height="100%">
    <feComponentTransfer>
      <feFuncR type="gamma" exponent="5" />
      <feFuncG type="gamma" exponent="5" />
      <feFuncB type="gamma" exponent="5" />
    </feComponentTransfer>
  </filter>

  <rect
    x="0"
    y="0"
    width="200"
    height="200"
    fill="url(#gradient)"
    filter="url(#componentTransfer1)" />
  <rect
    x="220"
    y="0"
    width="200"
    height="200"
    fill="url(#gradient)"
    filter="url(#componentTransfer2)" />
</svg>

{{EmbedLiveSample("Example", "480", "200")}}

Usage notes

<table class="properties"> <tbody> <tr> <th scope="row">Value</th> <td>{{cssxref("number")}}</td> </tr> <tr> <th scope="row">Default value</th> <td><code>1</code></td> </tr> <tr> <th scope="row">Animatable</th> <td>Yes</td> </tr> </tbody> </table>
  • <number>
    • : If the {{SVGAttr("type")}} attribute of the component element is set to gamma, this value specifies the exponent of the gamma function

Specifications

{{Specifications}}