R: orthogonality a block design

is.orthogonal {ibd} | R Documentation

## orthogonality a block design

### Description

This function checks whether an incomplete block design is orthogonal or not. Incidence matrix of the design is to be supplied as input to the function. If the design is orthogonal, it returns a value of 1 else it returns 0.

### Usage

    is.orthogonal(N)

### Arguments

`N` | incidence matrix

### Value

`orthogonal` | orthogonal

### Author(s)

B N Mandal <mandal.stat@gmail.com>

### Examples

    N=matrix(c(1,0,0,0,1,0,1,0,0,0,1,0,1,1,0,0,1,0,1,1,0,1,0,1,1,0,0,0,0,1,1,0,0,0,1,1,1,0,
    0,0,1,0,0,1,0,1,1,0,0),nrow=7,byrow=TRUE)
    is.orthogonal(N)

[Package ibd version 1.2 Index]