Replace Missing Values

Replaces missing values of a matrix or dataframe with the medians (what="median") or means (what="mean") of the respective columns.

impute(x, what = c("median", "mean"))

Arguments

x

A matrix or dataframe.

what

What to impute.

Value

A matrix or dataframe.

Author

Friedrich Leisch

Examples

x<- matrix(1:10, ncol=2)
x[c(1,3,7)] <- NA
print(x)
#>      [,1] [,2]
#> [1,]   NA    6
#> [2,]    2   NA
#> [3,]   NA    8
#> [4,]    4    9
#> [5,]    5   10
print(impute(x))
#>      [,1] [,2]
#> [1,]    4  6.0
#> [2,]    2  8.5
#> [3,]    4  8.0
#> [4,]    4  9.0
#> [5,]    5 10.0