plot along z-axis

Hello,

I have 3 waves. I wish to plot one on the x-axis, one on the y-axis, and one on the z-axis where the z-axis is color scale.

How do I do it?

Thanks.
Create a graph and select your x data as the x and your y data as the y wave.

After the graph is created, double click the wave to bring up the modify trace dialog box. Click the "set as f(z)..." button and select color as f(z) and the z data as the color value and pick your color scheme.
To read about this, execute:
DisplayHelpTopic "Setting Trace Properties from an Auxiliary (Z) Wave"