# zplane (MathScript RT Module Function)

LabVIEW 2012 MathScript RT Module Help

Edition Date: June 2012

Part Number: 373123C-01

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Owning Class: filter design

Requires: MathScript RT Module

zplane(a)

zplane(a, b)

## Description

Plots zeros and poles.

Examples

## Inputs

Name Description
a Specifies the zeros to plot. If a is a row vector, the zeros are the roots of a polynomial whose coefficients, in decreasing order of power, are a. If a is a column vector, the zeros are the values in a. If a is a matrix, the zeros are the values in each column of a. LabVIEW plots the zeros in different columns of a with different colors. If a is a row vector and you do not specify b, the pole is (0, 0). If a is a column vector or a matrix and you do not specify b, LabVIEW does not plot poles.
b Specifies the poles to plot. If b is a row vector, the poles are the roots of a polynomial whose coefficients, in decreasing order of power, are b. If b is a column vector, the poles are the values in b. If b is a matrix, the poles are the values in each column of b. LabVIEW plots the poles in different columns of b with different colors.

## Details

The following table lists the support characteristics of this function.

 Supported in the LabVIEW Run-Time Engine No (always ignored) Supported on RT targets No

## Examples

A = [-1, 2, 0; -1 + 0.2i, 2 + 0.5i, 0; -1 - 0.2i, 2 - 0.5i, 0];
B = [-0.5 + 0.5i, 1; -0.5 - 0.5i, 1];
zplane(A, B)