The applet below shows a surface plot of the imaginary part of the Laplace Transform of a system with a pole at -a. When th = 0 the view is along the -ve real axis.

ph changes the elevation above the s plane.

mx limits the maximum value of the function.

u/d moves the plot up or down.

m/g magnifies the plot.

maganta area represents a slice through the plot along the imaginary axis.

COPYRIGHT © 1999 Cuthbert A. Nyack.