Naming Conflict in as_tsibble() Results in Unsupported Index Error

[jimmyrigby94]

Details

When a data frame is passed to as_tsibble() with a column named index the object conversion fails.

---

Consider the following example, where the grouping variable is stored as "index", the time variable stored as "qtr", and the time series value named "value".

tbl2 <- tibble(
    qtr = rep(yearquarter("2010 Q1") + 0:9, 3),
    index = rep(c("x", "y", "z"), each = 10),
    value = rnorm(30)
)

as_tsibble(tbl2, key = index, index = qtr)

Results:

Error in `validate_index()`:
! Unsupported index type: character

Eliminating naming conflicts with specials fixes the error.

tbl2_conf <- tbl2%>%
      rename(grp = index)

as_tsibble(tbl2_conf , key = grp, index = qtr)