Method getNumericTag

ij/src/main/java/ij/util/DicomTools.java:143–150

(String hdr, String tag)

	}

	private static double getNumericTag(String hdr, String tag) {
		String value = getTag(hdr, tag);
		if (value==null) return Double.NaN;
		int index3 = value.indexOf("\\");
		if (index3>0)
			value = value.substring(0, index3);
		return Tools.parseDouble(value);
	}

	private static String getTag(String hdr, String tag) {
		if (hdr==null) return null;