Access data.table columns with strings

Question

Apologies for a question that probably makes it obvious that I usually work in Python/pandas, but I\'m stuck with this. How do I select a data.table column usin

Answer 1

You can use get() as the j argument using single brackets:

library(data.table)
dt <- data.table(iris)
dt[, get("Species")]

The result:

[1] setosa     setosa     setosa     setosa     setosa     setosa .....

You can also use a string directly inside the double bracket operator, like this:

dt[["Species"]]