how to repeat an R command with minor changes? How to make a loop to automate the following code for-CodePudding

how can i make my code more general? I want to be able to imput fast as many variables as i want.

asset1 <- asset_returns_xts[,1]
asset2 <- asset_returns_xts[,2]
asset3 <- asset_returns_xts[,3]
asset4 <- asset_returns_xts[,4]
asset5 <- asset_returns_xts[,5]

CodePudding user response：

You can use for loop:

for(i in 1:5){
    assign(paste0("asset", i), asset_returns_xts[,i])  
}

Apply family functions (lapply, sapply) may be faster.

CodePudding user response：

You may use list2env.

list2env(setNames(d[1:3], paste0('asset', 1:3)), envir=.GlobalEnv)

ls()
# [1] "asset1" "asset2" "asset3" "d"

Data:

d <- data.frame(matrix(1:12, 3, 4))