Method getZoom

ij/src/main/java/ij/macro/Functions.java:3757–3765

()

	}

	double getZoom() {
		interp.getParens();
		ImagePlus imp = getImage();
		ImageCanvas ic = imp.getCanvas();
		if (ic==null)
			{interp.error("Image not displayed"); return 0.0;}
		else
			return ic.getMagnification();
	}

	void setAutoThreshold() {
		String mString = null;