collapse() without argument throws illegible error

[cbeleites]

... about the argument not being a vector

• Maybe return NULL or NA on empty argument?
• Or throw error that ... arguments cannot be empty ?

library("hyperSpec")
#> Lade nötiges Paket: lattice
#> Lade nötiges Paket: grid
#> Lade nötiges Paket: ggplot2
#> Lade nötiges Paket: xml2
#> Package hyperSpec, version 0.100
#> 
#> To get started, try
#>    vignette ("hyperspec")
#>    package?hyperSpec 
#>    vignette (package = "hyperSpec")
#> 
#> If you use this package please cite it appropriately.
#>    citation("hyperSpec")
#> will give you the correct reference.
#> 
#> The project homepage is http://hyperspec.r-forge.r-project.org
collapse()
#> Error in order(wl.df$wl): Argument 1 ist kein Vektor

^{Created on 2021-11-30 by the reprex package (v2.0.1)}

Session info

``` r sessioninfo::session_info() #> ─ Session info ────────────────────────────────────────────────────────────── #> hash: top hat, vulcan salute: dark skin tone, couple with heart: man, man #> #> setting value #> version R version 4.1.2 (2021-11-01) #> os Ubuntu 20.04.3 LTS #> system x86_64, linux-gnu #> ui X11 #> language de_DE #> collate de_DE.UTF-8 #> ctype de_DE.UTF-8 #> tz Europe/Berlin #> date 2021-11-30 #> pandoc 2.11.4 @ /usr/lib/rstudio/bin/pandoc/ (via rmarkdown) #> #> ─ Packages ─────────────────────────────────────────────────────────────────── #> package * version date (UTC) lib source #> assertthat 0.2.1 2019-03-21 [1] CRAN (R 4.1.0) #> backports 1.3.0 2021-10-27 [1] CRAN (R 4.1.2) #> cli 3.1.0 2021-10-27 [1] CRAN (R 4.1.2) #> colorspace 2.0-2 2021-06-24 [1] CRAN (R 4.1.0) #> crayon 1.4.2 2021-10-29 [1] CRAN (R 4.1.2) #> DBI 1.1.1 2021-01-15 [1] CRAN (R 4.1.0) #> digest 0.6.28 2021-09-23 [1] CRAN (R 4.1.2) #> dplyr 1.0.7 2021-06-18 [1] CRAN (R 4.1.0) #> ellipsis 0.3.2 2021-04-29 [1] CRAN (R 4.1.0) #> evaluate 0.14 2019-05-28 [1] CRAN (R 4.1.0) #> fansi 0.5.0 2021-05-25 [1] CRAN (R 4.1.0) #> fastmap 1.1.0 2021-01-25 [1] CRAN (R 4.1.0) #> fs 1.5.0 2020-07-31 [1] CRAN (R 4.1.0) #> generics 0.1.1 2021-10-25 [1] CRAN (R 4.1.2) #> ggplot2 * 3.3.5 2021-06-25 [1] CRAN (R 4.1.0) #> glue 1.5.0 2021-11-07 [1] CRAN (R 4.1.2) #> gtable 0.3.0 2019-03-25 [1] CRAN (R 4.1.0) #> highr 0.9 2021-04-16 [1] CRAN (R 4.1.0) #> htmltools 0.5.2 2021-08-25 [1] CRAN (R 4.1.2) #> hyperSpec * 0.100 2021-08-04 [1] local #> jpeg 0.1-9 2021-07-24 [1] CRAN (R 4.1.0) #> knitr 1.36 2021-09-29 [1] CRAN (R 4.1.2) #> lattice * 0.20-45 2021-09-22 [1] CRAN (R 4.1.2) #> latticeExtra 0.6-29 2019-12-19 [1] CRAN (R 4.1.0) #> lazyeval 0.2.2 2019-03-15 [1] CRAN (R 4.1.0) #> lifecycle 1.0.1 2021-09-24 [1] CRAN (R 4.1.2) #> magrittr 2.0.1 2020-11-17 [1] CRAN (R 4.1.0) #> munsell 0.5.0 2018-06-12 [1] CRAN (R 4.1.0) #> pillar 1.6.4 2021-10-18 [1] CRAN (R 4.1.2) #> pkgconfig 2.0.3 2019-09-22 [1] CRAN (R 4.1.0) #> png 0.1-7 2013-12-03 [1] CRAN (R 4.1.0) #> purrr 0.3.4 2020-04-17 [1] CRAN (R 4.1.0) #> R.cache 0.15.0 2021-04-30 [1] CRAN (R 4.1.0) #> R.methodsS3 1.8.1 2020-08-26 [1] CRAN (R 4.1.0) #> R.oo 1.24.0 2020-08-26 [1] CRAN (R 4.1.0) #> R.utils 2.11.0 2021-09-26 [1] CRAN (R 4.1.2) #> R6 2.5.1 2021-08-19 [1] CRAN (R 4.1.0) #> RColorBrewer 1.1-2 2014-12-07 [1] CRAN (R 4.1.0) #> reprex 2.0.1 2021-08-05 [1] CRAN (R 4.1.0) #> rlang 0.4.12 2021-10-18 [1] CRAN (R 4.1.2) #> rmarkdown 2.11 2021-09-14 [1] CRAN (R 4.1.2) #> rstudioapi 0.13 2020-11-12 [1] CRAN (R 4.1.0) #> scales 1.1.1 2020-05-11 [1] CRAN (R 4.1.0) #> sessioninfo 1.2.1 2021-11-02 [1] CRAN (R 4.1.2) #> stringi 1.7.5 2021-10-04 [1] CRAN (R 4.1.2) #> stringr 1.4.0 2019-02-10 [1] CRAN (R 4.1.0) #> styler 1.6.2 2021-09-23 [1] CRAN (R 4.1.2) #> testthat 3.1.0 2021-10-04 [1] CRAN (R 4.1.2) #> tibble 3.1.6 2021-11-07 [1] CRAN (R 4.1.2) #> tidyselect 1.1.1 2021-04-30 [1] CRAN (R 4.1.0) #> utf8 1.2.2 2021-07-24 [1] CRAN (R 4.1.0) #> vctrs 0.3.8 2021-04-29 [1] CRAN (R 4.1.0) #> withr 2.4.2 2021-04-18 [1] CRAN (R 4.1.0) #> xfun 0.28 2021-11-04 [1] CRAN (R 4.1.2) #> xml2 * 1.3.2 2020-04-23 [1] CRAN (R 4.1.0) #> yaml 2.2.1 2020-02-01 [1] CRAN (R 4.1.0) #> #> [1] /home/cb/R/x86_64-pc-linux-gnu-library/4.1 #> [2] /usr/local/lib/R/site-library #> [3] /usr/lib/R/site-library #> [4] /usr/lib/R/library #> #> ────────────────────────────────────────────────────────────────────────────── ```

[GegznaV]

@cbeleites :

• Maybe return NULL or NA on an empty argument?
• Or throw an error that ... arguments cannot be empty?

Documentation:

#' @return A hyperSpec object

Maybe an empty hyperSpec should be returned for output datatype consistency?