Append and replacing data in r I am writing a few lines of codes to create a data table full of NAs but don't know how to append the data of results into the data table I created while replacing the position of NAs.
Here is my data table
    

games&lt;-10
game_results&lt;-as.data.frame(matrix(NA,games,3))
install.packages("data.table")
library(data.table)
setnames(game_results,c("V1","V2","V3"),c("winner","round","winnerscore"))
game_results
You could change in this case with command 

game_results$winner[1] &lt;- "Dad"


But this copies the whole table, so i will recomend you to create an empty data in another way 

game_results &lt;- setNames(data.table(matrix(nrow = 10, ncol = 3)), c("winner","round","winnerscore"))


and assignment by reference in the way you prefer (hole column or specific cell), here instructions for both cases.