Scripts used in lecture of 10/6/05:

zplane3.m

	(provides a 3-d mesh plot of z-plane, with curve for the unit circle.
	Takes pole and zero vectors as input arguments.  Revised from
	zplane.m)

	
zplane0.m

	(acts like zplane.m except demonstrates pole-zero response with larger
	symbols
	
	
freqz2.m
	
	(short script to display DTFT magnitudes from -pi to pi)
	
	
go11_1.m

	(script used to call subroutines in classroom demo)