Currently it drops the fable class, even if the renamed columns aren't special in anyway (key, index, distribution). It should be possible to rename all columns without issue, maintaining the fable class.
reprex provided by Eric Berger:
library(fpp3)
#> ── Attaching packages ──────────────────────────────────────────── fpp3 0.4.0 ──
#> ✓ tibble 3.1.6 ✓ tsibble 1.1.1
#> ✓ dplyr 1.0.7 ✓ tsibbledata 0.4.0.9000
#> ✓ tidyr 1.1.4 ✓ feasts 0.2.2.9000
#> ✓ lubridate 1.8.0 ✓ fable 0.3.1.9000
#> ✓ ggplot2 3.3.5.9000
#> ── Conflicts ───────────────────────────────────────────────── fpp3_conflicts ──
#> x lubridate::date() masks base::date()
#> x dplyr::filter() masks stats::filter()
#> x tsibble::intersect() masks base::intersect()
#> x tsibble::interval() masks lubridate::interval()
#> x dplyr::lag() masks stats::lag()
#> x tsibble::setdiff() masks base::setdiff()
#> x tsibble::union() masks base::union()
N <- 20
a <- tsibble(date=2000+(1:N),x=runif(N),index=date)
a.lm <- a %>% model(tslm=TSLM(x ~ trend()))
a.fc <- a.lm %>% forecast(h=1)
hilo(a.fc,level=95) ## outputs a tsibble
#> # A tsibble: 1 x 5 [1Y]
#> # Key: .model [1]
#> .model date x .mean `95%`
#> <chr> <dbl> <dist> <dbl> <hilo>
#> 1 tslm 2021 N(0.45, 0.14) 0.453 [-0.2847969, 1.190116]95
###
print(a.fc) ## a fable
#> # A fable: 1 x 4 [1Y]
#> # Key: .model [1]
#> .model date x .mean
#> <chr> <dbl> <dist> <dbl>
#> 1 tslm 2021 N(0.45, 0.14) 0.453
class(a.fc) ## "fbl_ts" etc
#> [1] "fbl_ts" "tbl_ts" "tbl_df" "tbl" "data.frame"
colnames(a.fc) ## ".model" "date" "x" ".mean"
#> [1] ".model" "date" "x" ".mean"
a.fc %>% rename(forecast = .mean)
#> # A tsibble: 1 x 4 [1Y]
#> # Key: .model [1]
#> .model date x forecast
#> <chr> <dbl> <dist> <dbl>
#> 1 tslm 2021 N(0.45, 0.14) 0.453
colnames(a.fc)[4] <- "forecast"
###
hilo(a.fc,level=95) ### Error
#> Error in `hilo()`:
#> ! Objects of type `tbl_ts` are not supported by `hilo()`, you can create a custom `hilo` with `new_hilo()`
#> • Objects of type `tbl_df` are not supported by `hilo()`, you can create a custom `hilo` with `new_hilo()`
#> • Objects of type `tbl` are not supported by `hilo()`, you can create a custom `hilo` with `new_hilo()`
#> • Objects of type `data.frame` are not supported by `hilo()`, you can create a custom `hilo` with `new_hilo()`
###
class(a.fc)
#> [1] "tbl_ts" "tbl_df" "tbl" "data.frame"
Currently it drops the fable class, even if the renamed columns aren't special in anyway (key, index, distribution). It should be possible to rename all columns without issue, maintaining the fable class.
reprex provided by Eric Berger:
Created on 2022-02-25 by the reprex package (v2.0.0)