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Let see the example:
# 1. dplyr
mtcars %>% select(mpg, cyl, gear, everything())
# 2. data.table
as.data.table(mtcars)[, .(mpg, cyl, gear)]
What should be added after "gear" to have the same output as in "dplyr" case?
Thanks
562
table way. Unlike data. frame, the := operator adds a column to both the object living in the global environment and used in the function. I think this is because these objects are actually the same object.
data. table is a package is used for working with tabular data in R. It provides the efficient data. table object which is a much improved version of the default data.
data.table is an R package that provides an enhanced version of data.frame s, which are the standard data structure for storing data in base R. In the Data section above, we already created a data.table using fread() . We can also create one using the data.table() function.
Using setcolorder:
setcolorder(mtcars, neworder = c("mpg", "cyl", "gear"))
neworder
Character vector of the new column name ordering. May also be column numbers. If length(neworder) < length(x), the specified columns are moved in order to the "front" of x. By default, setcolorder without a specified neworder moves the key columns in order to the "front" of x.
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