# checkMatrix

check if a matrix takes as valid value

## Contents

- Syntax
- Description
- Input Arguments
- Output Arguments
- See Also

## Syntax

Opts = checkMatrix(Opts,field,default,dim)
Opts = checkMatrix(Opts,field,default,dim,posDef)

## Description

Checks if the specified matrix is a string and takes a valid value.

## Input Arguments

Opts | a structure containing the algorithm settings
field | string specifying the name of the setting that is checked
default | default value
dim | required dimension of the matrix
posDef | matrix has to be positive definite

## Output Arguments

Opts | adapted structure of algorithm settings

## See Also

`checkOpts`, `checkInteger`, `checkDouble`, `checkBoolean`

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