Sets the image matte channel

# Imagick::setImageMatte

(PECL imagick 2, PECL imagick 3)

Imagick::setImageMatte — Sets the image matte channel

### Description

public Imagick::setImageMatte(bool `$matte`): bool

Sets the image matte channel. This method is available if Imagick has been compiled against ImageMagick version 6.2.9 or newer.

### Parameters

`matte`

  True activates the matte channel and false disables it.

### Return Values

Returns `true` on success.

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