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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | ZPLANE ZPLANE Zero-pole plot
Usage
This function makes a zero-pole plot of a discrete-time
system defined by its zeros and poles. The various syntaxes
are
zplane(z,p)
where z and p are the zeros and the poles of the system
stored as column vectors, or
zplane(b,a)
where a and b are the polynomial coefficients of the
numerator and denominator stored as line vectors (roots is
used to find the zeros and poles). The symbol 'o' represents
a zero and the symbol 'x' represents a pole. The plot includes
the unit circle for reference.
Contributed by Paulo Xavier Candeias under GPL
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