This is a LaTeX package to plot Bode, Nichols, and Nyquist diagrams. It provides added functionality over the similar bodegraph package:

• new \BodeZPK and \BodeTF commands to generate Bode plots of any transfer function given either poles, zeros, gain, and delay, or numerator and denominator coefficients and delay;

• support for unstable poles and zeros;

• support for complex poles and zeros;

• support for general stable and unstable second order transfer functions;

• support for both Gnuplot (default) and pgfplots;

• support for linear and asymptotic approximation of magnitude and phase plots of any transfer function given poles, zeros, and gain.