List to data.frame

Converts a list to a data.frame based on given parameter set.

List elements must have the correct type with respect to parameter set. Exceptions are discrete parameters, whose values should be factors, only characters are accepted and factors are returned.

Returned data.frame has column names equal to parameter ids. In case of vector parameters column names will be numbered.

listToDf(list.object, par.set)

Arguments

list.object	[list] list of individuals, each with elements named by parameter ids.
par.set	[ParamSet] parameter set.

Value

[data.frame]

Examples

library(mlrCPO)

# Create parameter set
temp <- c("a", "b", "c")
ps.simple <- pSS(
 num: numeric [0, 10],
 int: integer[0, 10] [[trafo = function(x) x / 10]],
 char: discrete [temp],
 selector.selection: logical^10)

# Sample values as list and convert list to data frame
init.list <- sampleValues(ps.simple, 5, discrete.names = TRUE)
result <- listToDf(init.list, ps.simple)
result
#>         num int char selector.selection1 selector.selection2
#> 1 3.9121765   7    c                TRUE                TRUE
#> 2 9.4736835   5    b                TRUE               FALSE
#> 3 5.6178796   6    a               FALSE                TRUE
#> 4 3.1302513   1    a                TRUE               FALSE
#> 5 0.2720537   2    b                TRUE               FALSE
#>   selector.selection3 selector.selection4 selector.selection5
#> 1                TRUE                TRUE                TRUE
#> 2                TRUE               FALSE               FALSE
#> 3               FALSE               FALSE                TRUE
#> 4               FALSE               FALSE                TRUE
#> 5               FALSE               FALSE                TRUE
#>   selector.selection6 selector.selection7 selector.selection8
#> 1               FALSE               FALSE               FALSE
#> 2               FALSE               FALSE               FALSE
#> 3               FALSE                TRUE               FALSE
#> 4                TRUE               FALSE                TRUE
#> 5                TRUE                TRUE                TRUE
#>   selector.selection9 selector.selection10
#> 1               FALSE                 TRUE
#> 2                TRUE                 TRUE
#> 3                TRUE                 TRUE
#> 4                TRUE                 TRUE
#> 5                TRUE                 TRUE