transform_maximise {moocore}

Transform matrix according to maximise parameter

Description

Transform matrix according to maximise parameter

Usage

transform_maximise(x, maximise)

Arguments

x

matrix()|data.frame()
Matrix or data frame of numerical values, where each row gives the coordinates of a point.

maximise

logical()
Whether the objectives must be maximised instead of minimised. Either a single logical value that applies to all objectives or a vector of logical values, with one value per objective.

Value

x transformed such that every column where maximise is TRUE is multiplied by -1.

Examples

x <- data.frame(f1=1:10, f2=101:110)
rownames(x) <- letters[1:10]
transform_maximise(x, maximise=c(FALSE,TRUE))
transform_maximise(x, maximise=TRUE)
x <- as.matrix(x)
transform_maximise(x, maximise=c(FALSE,TRUE))
transform_maximise(x, maximise=TRUE)