Description Usage Arguments Details Value Author(s) References See Also Examples

View source: R/mainfunctions.R

Checks whether or not the input is a proper balanced (t-1)-spread of `PG(n-1,2)`

.

1 |

`spr` |
A balanced spread of |

`printstatements` |
A Boolean indicating whether or not to print possible reasons for not being a spread if the input is not a spread. |

Checks whether or not the input is a proper balanced (t-1)-spread of `PG(n-1,2)`

. The spread should be formatted as a 3-dimensional array with `spr[i,j,k]`

indicating whether or not the `i`

th basic factor is present in the `j`

th effect of the `k`

th flat of `spr`

. See Spencer et al. (2019) for details.

A Boolean indicating whether or not the input is a spread.

Neil Spencer, Pritam Ranjan, Franklin Mendivil

Spencer, N.A., Ranjan, P., and Mendivil, F., (2019), "Isomorphism Check for *2^n* Factorial Designs with Randomization Restrictions", Journal of Statistical Theory and Practice, 13(60),1-24 [https://doi.org/10.1007/s42519-019-0064-5]

`is.star`

for checking if the input is a balanced covering star.

`checkSpreadIsomorphism`

for checking the isomorphism of balanced spreads.

`checkStarIsomorphism`

for checking the isomorphism of balanced covering stars.

1 2 3 4 5 6 7 8 9 | ```
## Example 1: checking whether "spreadn4t2a" is a proper spread
data(spreadn4t2a)
is.spread(spreadn4t2a)
## Example 2: checking whether "starn5t3a" is a proper spread
data(starn5t3a)
is.spread(starn5t3a)
``` |

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