# stepzd

Version:

Computes the step response of a filter. If you do not request an output, this function plots the step response in the current plot window.

## Syntax

stepzd(b)
stepzd(b, a)
stepzd(b, a, n)
stepzd(b, a, n, f)
[r, t] = stepzd(b)
[r, t] = stepzd(b, a)
[r, t] = stepzd(b, a, n)
[r, t] = stepzd(b, a, n, f)
Legacy name: stepz

## b

Forward filter coefficients. b is a vector.

## a

Backward filter coefficients. a is a vector.

Default: [1]

## n

Number of equidistant points for which to compute a step response. If you specify [] for n, MathScript automatically determines the number of points. If you do not specify n, MathScript determines the number of points according to a. n is a positive integer or a vector of such numbers.

## f

Distance d between equidistant points, where d = 1/f. f is a positive real number.

## r

Step response of the filter defined by a and b. r is a real vector.

## t

Time values of the step response. t is a real vector.

B = [1];
A = [1, 0.2, -0.02, 1];
[R, T] = stepzd(B, A, 10)

Where This Node Can Run:

Desktop OS: Windows

FPGA: This product does not support FPGA devices