Informative.array.prob: Arrange a matrix of probabilities for informative array...
In binGroup: Evaluation and Experimental Design for Binomial Group Testing

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

Arrange a vector of individual risk probabilities in a matrix for informative array testing without master pooling.

1	Informative.array.prob(prob.vec, nr, nc, method = "sd")

`prob.vec`	vector of individual risk probabilities, of length nr*nc.
`nr`	the number of rows in the array.
`nc`	the number of columns in the array.
`method`	character string defining the method to be used for matrix arrangement. Options include spiral ("`sd`") and gradient ("`gd`") arrangement. See McMahan et al. (2012) for additional details.

A matrix of probabilities arranged according to the specified method.

This function was originally written by Christopher S. McMahan for McMahan et al. (2012). The function was obtained from http://chrisbilder.com/grouptesting.

\insertRef

McMahan2012bbinGroup

p.vec.func for generating a vector of individual risk probabilities from an overall probability of disease and Array.Measures for calculating operating characteristics for informative array testing without master pooling.

http://chrisbilder.com/grouptesting

Other Individual risk probability functions: beta.dist, p.vec.func

# Use the gradient arrangement method to create a matrix
#   of individual risk probabilities for a 10x10 array.
# Depending on the specified probability, alpha level, 
#   and overall group size, simulation may be necessary in 
#   order to generate the vector of individual probabilities. 
#   This is done using the p.vec.func() function and requires 
#   the user to set a seed in order to reproduce results.
# This example takes less than 1 second to run.
# Estimated running time was calculated using a 
#   computer with 16 GB of RAM and one core of an 
#   Intel i7-6500U processor.
set.seed(1107)
p.vec1 <- p.vec.func(p=0.05, alpha=2, grp.sz=100)
Informative.array.prob(prob.vec=p.vec1, nr=10, nc=10, method="gd")

# Use the spiral arrangement method to create a matrix
#   of individual risk probabilities for a 5x5 array.
# Depending on the specified probability, alpha level, 
#   and overall group size, simulation may be necessary in 
#   order to generate the vector of individual probabilities. 
#   This is done using the p.vec.func() function and requires 
#   the user to set a seed in order to reproduce results.
# This example takes less than 1 second to run.
# Estimated running time was calculated using a 
#   computer with 16 GB of RAM and one core of an 
#   Intel i7-6500U processor.
set.seed(8791)
p.vec2 <- p.vec.func(p=0.02, alpha=0.5, grp.sz=25)
Informative.array.prob(prob.vec=p.vec2, nr=5, nc=5, method="sd")