# Get number order matrix which is used in md

### Description

Get number order matrix which is used in md

### Usage

1 |

### Arguments

`i` |
integer |

`length` |
the number of grids in domain |

### Value

matrix related to number order

Get number order matrix which is used in md

1 |

`i` |
integer |

`length` |
the number of grids in domain |

matrix related to number order