How to assign each variable in a vector of variables new value using loop?

Question

I want to assign variables a new value using a loop. Say I have N variables v1 through vN. They have some value stored already. I want to update the stored values by passing them to a function and store in the same variable. Something like:

v1 <- "value1"
v2 <- "value2"
.
.
.
vN <- "valueN"

v_vector <- c(v1,v2,v3,...,vN)

dummy_function <- function(x){paste("new",x)}

for (v in v_vector){
  v <- dummy_function(v) 
}

This should update the value of v1 to new value1, for example. How can I achieve this in R?

akrun · Accepted Answer · 2020-11-25 21:02:54Z

1

If we already created the vector objects, get them into a list and apply the function, and update the original objects with list2env

list2env(lapply(mget(ls(pattern = '^v\\d+$')), dummy_function), .GlobalEnv)

answered Nov 25, 2020 at 21:02

akrun

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