W3Schools.com

SVG feComponentTransfer Element

SVG Reference Complete SVG Reference

Definition and Usage

The SVG feColorMatrix element is used to perform component-wise remapping of data. It allows brightness adjustment, contrast adjustment, color balance or thresholding.

The specification of the transfer functions is defined by the sub-elements to 'feComponentTransfer':

  • feFuncR, transfer function for red component of the input graphic
  • feFuncG, transfer function for green component of the input graphic
  • feFuncB, transfer function for blue component of the input graphic
  • feFuncA, transfer function for alpha component of the input graphic

The type attribute defines the type of component transfer function. The type attribute can take one of the following values:

  • identity
  • table
  • discrete
  • linear
  • gamma

Example 1

The following example shows examples of four types of feComponentTransfer operations.

Copy the following code into Notepad and save the file as "fecomponenttransfer_1.svg". Place the file in your Web directory:

<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">

<svg width="100%" height="100%" version="1.1"
xmlns="http://www.w3.org/2000/svg">

<defs>
<linearGradient id="MyGrad" gradientUnits="userSpaceOnUse"
x1="50" y1="0" x2="600" y2="0">
<stop offset="0" stop-color="#ff0000" />
<stop offset=".33" stop-color="#00ff00" />
<stop offset=".67" stop-color="#0000ff" />
<stop offset="1" stop-color="#000000" />
</linearGradient>

<filter id="Identity">
<feComponentTransfer>
<feFuncR type="identity"/>
<feFuncG type="identity"/>
<feFuncB type="identity"/>
<feFuncA type="identity"/>
</feComponentTransfer>
</filter>
<filter id="Table">
<feComponentTransfer>
<feFuncR type="table" tableValues="0 0 1 1"/>
<feFuncG type="table" tableValues="1 1 0 0"/>
<feFuncB type="table" tableValues="0 1 1 0"/>
</feComponentTransfer>
</filter>
<filter id="Linear">
<feComponentTransfer>
<feFuncR type="linear" slope=".5" intercept=".25"/>
<feFuncG type="linear" slope=".5" intercept="0"/>
<feFuncB type="linear" slope=".5" intercept=".5"/>
</feComponentTransfer>
</filter>
<filter id="Gamma">
<feComponentTransfer>
<feFuncR type="gamma" amplitude="2" exponent="5" offset="0"/>
<feFuncG type="gamma" amplitude="2" exponent="3" offset="0"/>
<feFuncB type="gamma" amplitude="2" exponent="1" offset="0"/>
</feComponentTransfer>
</filter>
</defs>

<g font-size="50" font-weight="bold" fill="url(#MyGrad)">
<text x="50" y="60" filter="url(#Identity)">Identity</text>
<text x="50" y="120" filter="url(#Table)">TableLookup</text>
<text x="50" y="180" filter="url(#Linear)">LinearFunc</text>
<text x="50" y="240" filter="url(#Gamma)">GammaFunc</text>
</g>

</svg>

View example

SVG Reference Complete SVG Reference
W3Schools Certification

W3Schools' Online Certification

The perfect solution for professionals who need to balance work, family, and career building.

More than 10 000 certificates already issued!

Get Your Certificate »

The HTML Certificate documents your knowledge of HTML.

The CSS Certificate documents your knowledge of advanced CSS.

The JavaScript Certificate documents your knowledge of JavaScript and HTML DOM.

The jQuery Certificate documents your knowledge of jQuery.

The XML Certificate documents your knowledge of XML, XML DOM and XSLT.

The ASP Certificate documents your knowledge of ASP, SQL, and ADO.

The PHP Certificate documents your knowledge of PHP and SQL (MySQL).

WEB HOSTING
Best Web Hosting
PHP MySQL Hosting
Best Hosting Coupons
UK Reseller Hosting
Cloud Hosting
Top Web Hosting
$7.95/mo SEO Hosting
Premium Website Design
WEB BUILDING
Download XML Editor
FREE Website BUILDER
Free Website Templates Free CSS Templates
Make Your Own Website
W3SCHOOLS EXAMS
Get Certified in:
HTML, CSS, JavaScript, XML, PHP, and ASP
W3SCHOOLS BOOKS
New Books:
HTML, CSS
JavaScript, and Ajax
STATISTICS
Browser Statistics
Browser OS
Browser Display
SHARE THIS PAGE