make_structure: make_structure

In squid-group/squidSim: Flexible and reproducible structured simulations

make_structure

Description

Make nested and crossed balanced hierarchical structures

Usage

make_structure(structure, repeat_obs = 1, level_names, ...)

Arguments

structure	A formula specifying the structure and sample sizes at each level. See details.
repeat_obs	Number of repeated observations at the lowest level
level_names	An optional list, containing names for the levels of different grouping factors
...	Further arguments passed to or from other methods.

Details

Factors are input as a text string. The name of each factor is followed by the number of levels in that factor in brackets e.g. "individual(100)". Nested factors can be specified using "/", e.g. "population(2)/individual(2)", the lower levels being specified after the higher levels, and the sample sizes of the lower levels. Crossed factors are indicated using "+"

Value

A data.frame with the data structure

Author(s)

Joel Pick - [e-mail]

Examples

# simple data structure with 5 'individuals' and 2 observations per individual
make_structure(structure="individual(5)", repeat_obs=2)

# nested data structure with 2 sexes, 5 individuals per sex
# and 2 observations per individual
make_structure(structure="sex(2)/individual(5)", repeat_obs=2)

# Naming the sexes in the data_structure
make_structure(structure="sex(2)/individual(5)", repeat_obs=2,
 level_names=list(sex=c("female","male")))

# crossed data structure with 5 individuals in 2 treatments 
# and 2 observations per individual and treatment combination
make_structure(structure="treatment(2) + individual(5)", repeat_obs=1)

squid-group/squidSim documentation built on Dec. 15, 2024, 12:26 p.m.