The follow figures can be reproduced by using PeZ below. Just follow the instructions.

Do This: Figure 8-9, p214

1. Click on the P button, then click on the Pole-Zero Plot at z = 0.8.
2. Next click on the Z button, and click on the Pole-Zero Plot at z = -1.
3. The Magnitude Response and Phase Response plots will look like those in the text.

Figure 8-10, p215

1. Follow the steps for Figure 8-9.
2. Select 3D Pole-Zero Plot
3. Click on the 3D plot and drag for a different view.

Figure 8-12, p215

1. Click on the P button, then click on the Pole-Zero Plot at z = 0.8.
2. Next click on the Z button, and click on the Pole-Zero Plot at z = 0.
3. The Magnitude Response and Phase Response plots will look like those in the text.

Figure 8-23, p233

1. Click on the PP button, then click on the Pole-Zero Plot at z = 0.9e^±jπ/3.
2. Next click on the Z button, and click on the Pole-Zero Plot at z = 1.
3. Click Z again and click at z=-1.

Figure 8-24, p234

1. Click on the PP button, then click on the Pole-Zero Plot at z = 0.85e^±jπ/2.
2. Next click on the Z button, and click on the Pole-Zero Plot at z = 1.
3. Click Z again and click at z=-1.
4. Select 3D Pole-Zero Plot.

Figure 8-26, p234

1. Reproduce Figure 8-26 by placing the poles and zeros as shown in the figure.
2. Note: PeZ doesn't show repeated root like the double pole at z=0 in the figure.