hamlet (version 0.9.6)

mix.fun: Apply function to numerical columns of a mixed data.frame while ignoring non-numeric fields

Description

This function is intended for applying functions to numeric fields of a mixed type data.frame. Namely, the function ignores fields that are e.g. factors, and returns FUN function applied to only the numeric fields.

Usage

mix.fun(x, FUN = scale, ...)

Arguments

x

Data.frame x with mixed type fields

FUN

Function to apply, for example 'scale', 'cov', or 'cor'

…

Additional parameters passed on to FUN

Value

Return values of FUN when applied to numeric columns of 'x'

See Also

apply

Examples

# NOT RUN {
data(vcapwide)

mix.fun(vcapwide[,c("Group", "PSAWeek4", "PSAWeek10", "PSAWeek14")], FUN=scale) 
# Column 'Group' is ignored
mix.fun(vcapwide[,c("Group", "PSAWeek4", "PSAWeek10", "PSAWeek14")], FUN=cov, use="na.or.complete") 
# ... is used to pass the 'use' parameter to the 'cov'-function
# }