summary
dplyr
library(dplyr)
base::reshape
library(reshape2)
reshape2
library(tidyr)
duplicated
unique
is.na
na.omit
complete.cases
base::merge
merge
join
sqldf
NA
Rename the rows as R1, R2, ..., R100
R1, R2, ..., R100
Rename the column Wt as Weight_kg, Age as Age_yr
Wt
Weight_kg
Age
Age_yr