zp2tf

Zero-pole to transfer function conversion.

Syntax

[NUM, DEN] = zp2tf(Z, P, K)

Inputs

Z
Zero locations, stored by column for each system output.
Type: double | complex
Dimension: vector | matrix
P
Pole locations, stored in a column vector.
Type: double | complex
Dimension: vector
K
System gain factor(s), stored as a scalar or row vector.
Type: double
Dimension: scalar | vector

Outputs

NUM
Numerator coefficients, stored by row for each system output.
Type: double
Dimension: vector | matrix
DEN
Denominator coefficients, stored in a row vector.
Type: double
Dimension: vector

Example

Example including the function zp2tf: 
num = [3 2];
den = [5 2 3];
[z, p, k] = tf2zp(num, den);
[num, den] = zp2tf(z, p, k)
num = [Matrix] 1 x 2
0.60000  0.40000
den = [Matrix] 1 x 3
1.00000  0.40000  0.60000
Ts = 0

Comments

The zeros and poles must be either real or complex conjugate pairs.

The vectors of NUM and DEN are in descending powers of s.