request additional format for list_valid_format_labels()

[kinnersleyn]

When using the 2d format string with parentheses I'd like list_valid_format_labels to support 3 decimal places in both the first and second entries e.g. xx.xxx (xx.xxx)
Currently I have to choose either to use a slash instead of parentheses with "xx.xxx / xx.xxx" or reduce to 2 dp's for the first entry with "xx.xx (xx.xxx)"

Thanks

[edelarua]

Hi @kinnersleyn ,

For now, you can use the sprintf_format() function from formatters to implement this format as follows:

library(formatters)

fmt_fun <- sprintf_format("%.3f (%.3f)")
format_value(list(12.23456, 2.724), format = fmt_fun)
#> [1] "12.235 (2.724)"

^{Created on 2025-07-28 with reprex v2.1.1}

If you're using rtables you can implement custom formats in your tables as well. For example:

library(rtables)

lyt <- basic_table() %>%
  split_cols_by("Species") %>%
  analyze(
    head(names(iris), -1), 
    afun = function(x) list("Mean (SD)" = c(mean(x), sd(x))),
    format = sprintf_format("%.3f (%.3f)")
  )

tbl <- build_table(lyt, iris)
tbl
#>                   setosa        versicolor       virginica  
#> ————————————————————————————————————————————————————————————
#> Sepal.Length                                                
#>   Mean (SD)    5.006 (0.352)   5.936 (0.516)   6.588 (0.636)
#> Sepal.Width                                                 
#>   Mean (SD)    3.428 (0.379)   2.770 (0.314)   2.974 (0.322)
#> Petal.Length                                                
#>   Mean (SD)    1.462 (0.174)   4.260 (0.470)   5.552 (0.552)
#> Petal.Width                                                 
#>   Mean (SD)    0.246 (0.105)   1.326 (0.198)   2.026 (0.275)

^{Created on 2025-07-28 with reprex v2.1.1}

[kinnersleyn]

Hi
Many thanks for providing this workaround which I've tested and works nicely.