Description Usage Arguments Details Value Author(s) References See Also Examples
View source: R/mainfunctions.R
This function computes a bitstring representation for a spread or star of PG(n-1,2)
1 | getBitstrings(spr)
|
spr |
A spread or star of |
This code obtains the bitstring representation (as described in Spencer et al. 2019) for any given spread or star 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
. This representation facilitates fast equivalence checking for spreads or stars.
A matrix with each row characterizing the elements of a distinct flat in spr.
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]
checkSpreadEquivalence
for checking equivalence of spreads.
checkStarEquivalence
for checking equivalence of spreads.
1 2 3 4 5 6 7 8 9 | ## Example 1: The bitstring representation of a 1-spread of PG(3,2)
data(spreadn4t2a)
getBitstrings(spreadn4t2a)
## Example 2: The bitstring representation of a star of PG(4,2) consisting of 4-flats.
data(starn5t3a)
getBitstrings(starn5t3a)
|
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.