# CanvasRenderingContext2D.setTransform()

The CanvasRenderingContext2D.setTransform() method of the Canvas 2D API resets (overrides) the current transformation to the identity matrix and then invokes a transformation described by the arguments of this method.

See also the transform() method, which does not override the current transform matrix and multiplies it with a given one.

## Syntax

JavaScript
void <var>ctx.setTransform(a, b, c, d, e, f);</var>

The transformation matrix is described by: $\left\left[ \begin\left\{array\right\}\left\{ccc\right\} a & c & e \\ b & d & f \\ 0 & 0 & 1 \end\left\{array\right\} \right\right]$

### Parameters

a (m11)
Horizontal scaling.
b (m12)
Horizontal skewing.
c (m21)
Vertical skewing.
d (m22)
Vertical scaling.
e (dx)
Horizontal moving.
f (dy)
Vertical moving.

## Examples

### Using the setTransform method

This is just a simple code snippet which uses the setTransform method.

#### HTML

HTML
<canvas id="canvas"></canvas>

#### JavaScript

JavaScript
var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");

ctx.setTransform(1,1,0,1,0,0);
ctx.fillRect(0,0,100,100);

Edit the code below and see your changes update live in the canvas:

###### Playable code
HTML
<canvas id="canvas" width="400" height="200" class="playable-canvas"></canvas>
<div class="playable-buttons">
<input id="edit" type="button" value="Edit" />
<input id="reset" type="button" value="Reset" />
</div>
<textarea id="code" class="playable-code">
ctx.setTransform(1,1,0,1,0,0);
ctx.fillRect(0,0,100,100);</textarea>
JavaScript
var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");
var textarea = document.getElementById("code");
var reset = document.getElementById("reset");
var edit = document.getElementById("edit");
var code = textarea.value;

function drawCanvas() {
ctx.clearRect(0, 0, canvas.width, canvas.height);
eval(textarea.value);
}

textarea.value = code;
drawCanvas();
});

textarea.focus();
})

window.addEventListener("load", drawCanvas);

## Specifications

Specification Status Comment
WHATWG HTML Living Standard
The definition of 'CanvasRenderingContext2D.setTransform' in that specification.
Living Standard

## Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) (Yes) (Yes) (Yes) (Yes)
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) (Yes) (Yes) (Yes) (Yes) (Yes)