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baseFrequency - SVG | MDN
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baseFrequency
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The baseFrequency attribute represents the base frequency parameter for the noise function of the <feTurbulence> filter primitive.
You can use this attribute with the following SVG elements:
Example
Example 1
html,
body,
svg {
height: 100%;
}
html
<svg viewBox="0 0 420 200" xmlns="https://www.w3.org/2000/svg">
<filter id="noise1" x="0" y="0" width="100%" height="100%">
<feTurbulence baseFrequency="0.025" />
</filter>
<filter id="noise2" x="0" y="0" width="100%" height="100%">
<feTurbulence baseFrequency="0.05" />
</filter>
<rect x="0" y="0" width="200" height="200" filter="url(#noise1)" />
<rect x="220" y="0" width="200" height="200" filter="url(#noise2)" />
</svg>
Example 2
html
<svg
width="200"
height="200"
viewBox="0 0 220 220"
xmlns="https://www.w3.org/2000/svg">
<filter id="displacementFilter">
<feTurbulence
type="turbulence"
baseFrequency="0.05"
numOctaves="2"
result="turbulence" />
<feDisplacementMap
in2="turbulence"
in="SourceGraphic"
scale="50"
xChannelSelector="R"
yChannelSelector="G" />
</filter>
<circle cx="100" cy="100" r="100" filter="url(#displacementFilter)" />
</svg>
Usage notes
| Value | <number-optional-number> |
|---|---|
| Default value | 0 |
| Animatable | Yes |
<number-optional-number>-
If two numbers are provided, the first one represents the base frequency in the horizontal direction and the second one the base frequency in the vertical direction. If one number is provided, then that value is used for both x and y.
Negative values are forbidden.
Specifications
| Specification |
|---|
| Filter Effects Module Level 1 # element-attrdef-feturbulence-basefrequency |
Browser compatibility
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