do (version 2.0.0.1)

NA.col.sums: Sum of missing value by column

Description

NA is treated as missing value.

Usage

NA.col.sums(data)

Value

sum of missing value by column

Arguments

data

must be dataframe or matrix

Examples

df = data.frame(x=rep(c(1,NA,2,NA,6,NA),10),
                 y=rep(c(1,NA,2),20))
NA.col.sums(df)