dials
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tidymodels
Opaque error from `parameters()` with `new_*_param(..., label = NULL)`
We can specify a new parameter with new_quant_param() or new_qual_param().
The docs state that label is an optional parameter:
https://github.com/tidymodels/dials/blob/210055fa7f4e9483567fbf3bd642c31b5116608e/R/constructors.R#L34-L36
But if no label is specified, we get an opaque error when handing our new parameter to parameters():
library(dials)
#> Loading required package: scales
with_label <- function() new_quant_param(
values = 1,
label = c("with_label" = "Here is a label")
)
sans_label <- function() new_quant_param(
values = 1
)
parameters(with_label())
#> Collection of 1 parameters for tuning
#>
#> identifier type object
#> with_label with_label nparam[+]
parameters(sans_label())
#> Error in `purrr::map_chr()`:
#> ℹ In index: 1.
#> Caused by error:
#> ! Result must be length 1, not 0.
Created on 2024-09-02 with reprex v2.1.1
Session info
sessioninfo::session_info()
#> ─ Session info ───────────────────────────────────────────────────────────────
#> setting value
#> version R version 4.3.2 (2023-10-31)
#> os Amazon Linux 2023.5.20240708
#> system x86_64, linux-gnu
#> ui X11
#> language (EN)
#> collate C.UTF-8
#> ctype C.UTF-8
#> tz Europe/London
#> date 2024-09-02
#> pandoc 3.1.11 @ /usr/lib/rstudio-server/bin/quarto/bin/tools/x86_64/ (via rmarkdown)
#>
#> ─ Packages ───────────────────────────────────────────────────────────────────
#> package * version date (UTC) lib source
#> cli 3.6.3 2024-06-21 [1] CRAN (R 4.3.2)
#> colorspace 2.1-1 2024-07-26 [2] CRAN (R 4.3.2)
#> dials * 1.3.0 2024-07-30 [2] CRAN (R 4.3.2)
#> DiceDesign 1.10 2023-12-07 [2] CRAN (R 4.3.2)
#> digest 0.6.36 2024-06-23 [2] CRAN (R 4.3.2)
#> dplyr 1.1.4 2023-11-17 [2] CRAN (R 4.3.2)
#> evaluate 0.24.0 2024-06-10 [2] CRAN (R 4.3.2)
#> fansi 1.0.6 2023-12-08 [2] CRAN (R 4.3.2)
#> fastmap 1.2.0 2024-05-15 [2] CRAN (R 4.3.2)
#> fs 1.6.4 2024-04-25 [2] CRAN (R 4.3.2)
#> generics 0.1.3 2022-07-05 [2] CRAN (R 4.3.2)
#> glue 1.7.0 2024-01-09 [2] CRAN (R 4.3.2)
#> hardhat 1.4.0 2024-06-02 [2] CRAN (R 4.3.2)
#> htmltools 0.5.8.1 2024-04-04 [2] CRAN (R 4.3.2)
#> knitr 1.48 2024-07-07 [2] CRAN (R 4.3.2)
#> lifecycle 1.0.4 2023-11-07 [2] CRAN (R 4.3.2)
#> magrittr 2.0.3 2022-03-30 [2] CRAN (R 4.3.2)
#> munsell 0.5.1 2024-04-01 [2] CRAN (R 4.3.2)
#> pillar 1.9.0 2023-03-22 [2] CRAN (R 4.3.2)
#> pkgconfig 2.0.3 2019-09-22 [2] CRAN (R 4.3.2)
#> purrr 1.0.2 2023-08-10 [2] CRAN (R 4.3.2)
#> R6 2.5.1 2021-08-19 [2] CRAN (R 4.3.2)
#> reprex 2.1.1 2024-07-06 [2] CRAN (R 4.3.2)
#> rlang 1.1.4 2024-06-04 [2] CRAN (R 4.3.2)
#> rmarkdown 2.27 2024-05-17 [2] CRAN (R 4.3.2)
#> rstudioapi 0.16.0 2024-03-24 [2] CRAN (R 4.3.2)
#> scales * 1.3.0 2023-11-28 [2] CRAN (R 4.3.2)
#> sessioninfo 1.2.2 2021-12-06 [2] CRAN (R 4.3.2)
#> tibble 3.2.1 2023-03-20 [2] CRAN (R 4.3.2)
#> tidyselect 1.2.1 2024-03-11 [2] CRAN (R 4.3.2)
#> utf8 1.2.4 2023-10-22 [2] CRAN (R 4.3.2)
#> vctrs 0.6.5 2023-12-01 [2] CRAN (R 4.3.2)
#> withr 3.0.1 2024-07-31 [2] CRAN (R 4.3.2)
#> xfun 0.46 2024-07-18 [2] CRAN (R 4.3.2)
#> yaml 2.3.10 2024-07-26 [2] CRAN (R 4.3.2)
#>
#> [1] /home/owen10004/efs/R/x86_64-amazon-linux-gnu-library/4.3
#> [2] /usr/lib64/R/site-library
#> [3] /usr/lib64/R/library
#>
#> ──────────────────────────────────────────────────────────────────────────────
It's because the label is used within parameters() to construct the parameter names:
https://github.com/tidymodels/dials/blob/210055fa7f4e9483567fbf3bd642c31b5116608e/R/parameters.R#L39
