Impute Missing Values by median/mode.
na.roughfix(object, ...)
a data frame or numeric matrix.
further arguments special methods could require.
A completed data matrix or data frame. For numeric variables,
NA
s are replaced with column medians. For factor variables,
NA
s are replaced with the most frequent levels (breaking ties
at random). If object
contains no NA
s, it is returned
unaltered.
# NOT RUN { data(iris) iris.na <- iris set.seed(111) ## artificially drop some data values. for (i in 1:4) iris.na[sample(150, sample(20)), i] <- NA iris.roughfix <- na.roughfix(iris.na) iris.narf <- RRF(Species ~ ., iris.na, na.action=na.roughfix) print(iris.narf) # }