do (version 1.4.0.0)

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

Description

NA is treated as missing value.

Usage

NA.col.sums(data)

Arguments

data

must be dataframe or matrix

Value

sum of missing value by column

Examples

# NOT RUN {
df = data.frame(x=rep(c(1,NA,2,NA,6,NA),10),
                 y=rep(c(1,NA,2),20))
NA.col.sums(df)
# }