variableNames: Generate variable names for all factors

Description

Generate variable names for genetic, environmental factors and interacting terms.

Usage

variableNames(nEnvFactors, envFactorNames=NULL)

Arguments

nEnvFactors

number of environmental factors, an integer bewteen 1 and 3. When nEnvFactors is 1 and the number of levels for the enviromental factor (nLevels)is 1, there is one condition in the experiment (i.e. no envir

envFactorNames

a vector with names for all environmental factor(s). For example, for the experiment with two environmental factors of temperature and drug treatment: envFactorNames <- c( "Temperature", "Dosage" ) Default = NULL

Value

When nEnvFactors = 1 and nLevels = 1, there is no environmetal pertubation in the experimental. Then we re-define nEnvFactors to be 0 within the algorithm. Accordingly, variableNumber = 1, and variableNames is one genetic factor "Q". When nEnvFactors = 1, variableNumber = 3, and variableNames are one genetic factor "Q", one environmental factor "F", and one interacting factor "QxF". When nEnvFactors = 2, variableNumber = 7, and variableNames are one genetic factor "Q", two environmental factors "F1" and "F2", three two-way interacting factors "QF1", "QF2", "F1F2", and one three way interacting factors "QxF1xF2". When nEnvFactors = 3, variableNumber = 15, and variableNames are one genetic factor "Q", three environmental factors "F1", "F2" and "F3", six two-way interacting factors "QF1", "QF2", "QF3", "F1F2", "F2F3" and "F1F3", four three-way interacting factors "QxF1xF2", "QxF1xF3", "QxF2xF3", "F1xF2xF3" and one four-way interacting factors "QxF1xF2xF3".

Details

generates names for variables, a vector with the length of (variableNumber+1).

References