SVGGraphicsElement: getCTM() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.

The getCTM() method of the SVGGraphicsElement interface represents the matrix that transforms the current element's coordinate system to its SVG viewport's coordinate system.

Syntax

js
getCTM()

Parameters

None.

Return value

A DOMMatrix object.

Examples

Getting the Transformation Matrix

html
<svg xmlns="http://www.w3.org/2000/svg" width="400" height="400">
  <!-- Circle transformed using translation -->
  <circle
    id="circle"
    cx="50"
    cy="50"
    r="30"
    fill="blue"
    transform="translate(100, 150)" />
</svg>
js
const circle = document.getElementById("circle");

// Get the current transformation matrix
const ctm = circle.getCTM();

console.log("Matrix values:");
console.log(
  `a: ${ctm.a}, b: ${ctm.b}, c: ${ctm.c}, d: ${ctm.d}, e: ${ctm.e}, f: ${ctm.f}`,
);
// Output: Matrix values: a: 1, b: 0, c: 0, d: 1, e: 100, f: 150

Specifications

Specification
Scalable Vector Graphics (SVG) 2
# __svg__SVGGraphicsElement__getCTM

Browser compatibility

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