R Missing Data by Variable -

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R Missing Data by Variable -

is there efficient method of deriving total number of missing values each variable in info frame using r? can see how evaluate each variable, seems quite inefficient if info frame has numerous variables. thanks.

you try

colsums(is.na(df1)) data set.seed(24) df1 <- as.data.frame(matrix( sample(c(na,1:5), 100*20, replace=true), ncol=20))

r missing-data

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