Functions_for_Permutation: Helper Functions for Permutation

In GlobalDeviance: Global Deviance Permutation Tests

Description

The functions adapted from packages globaltest and GlobalAncova.

Usage

.mchoose(counts)

.nPermsG(counts, grouping)

.nPerms(D.full, model.dat, formula.full)

.allpermsG(counts, grouping)

.allperms(nums) 

Arguments

counts	Counts.
grouping	Indices for the group.
D.full	Designmatrix from the full model.
model.dat	Dataset with covariables.
formula.full	Formula from the full model.
nums	Indices to be permuted.

Details

The function .mchoose calculates the number of permutations.

The function .nPermsG calculates the number of permutations for multiple groups.

The function .nPerms calculates the number of permutations from the designmatrix.

The function .allpermsG lists all permutations for the multiple-group case.

The function .allperms lists all permutations for the continuos case.

Value

.mchoose	A number.
.nPermsG	A number.
.nPerms	Number of permutations (nPerms) and a vector which counts same rows of the designmatrix (counts).
.allpermsG	A matrix.
.allperms	A matrix (nums x nums!).

Author(s)

Frederike Fuhlbrueck [e-mail]

Examples

## Not run: 
### Examples
# Number of permutations
.mchoose(1:3)               # or choose(sum(1:3), 1) * choose(sum(2:3), 2)

# Number of permutations for multiple groups
.nPermsG(1:3, c(1, 1, 2))

# Number of permutations from the designmatrix
D.full<-t(matrix(c(1:9, 1:3), 3, 4))
model.dat<-matrix(c(1,0,0,1,0,1,0,0), 4, 2)
colnames(model.dat)<-c("A", "B")
formula.full<-~A+B
.nPerms(D.full, model.dat, formula.full)

# All permutations for the multiple-group case
.allpermsG(c(2, 1, 2), c(1, 1, 2)) 

# All permutations for the continuos case
.allperms(1:3)

## End(Not run)

GlobalDeviance documentation built on May 2, 2019, 11:32 a.m.