Data.table objects turn into data.frame after calling fix()
Every time I run the command fix(DT) on a data.table , after closing the fix window, DT turns into a data.frame object. Is this normal?
library(data.table)
DT <- data.table(a = 1:2, b = 2:3)
> class(DT)
[1] "data.table" "data.frame"
fix(DT)
# close the window
> class(DT)
[1] "data.frame"
EDIT:
some session info:
R version 3.0.0 (2013-04-03)
Platform: x86_64-w64-mingw32/x64 (64-bit)
fix invokes edit . However, there is not data.table method for edit (check using methods(edit) ). Because a data.table is also a data.frame, edit.data.frame is used instead and it returns a data.frame as documented.
You could write your own edit.data.table , but I don't recommend it, since data.tables are often way too big to be edited that way in a sensible way.