(PECL imagick 2.0.0)
  	
    
      
      Sets the image matte channel
    
    
      
      bool Imagick::setImageMatte ( bool $matte )
    
    
    
    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.
Returns: 
     Returns TRUE on success. 
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