public function setSize($size)
	{
		$this->size = $size;
		$this->pixelRatio = round($size / 5);

		return $this;
	}
public function setSize($size)
	{
		$this->size = $size;
		$this->pixelRatio = round($size / 5);

		return $this;
	}
public function setSize ( $ size ) { $ this -> size = $ size ; $ this -> pixelRatio = round ( $ size / 5 ) ; return $ this ; }
Set the image size

@param   integer  $size
@return  object
Set the image size