facet_wrap produces a NA panel

[hbahamonde]

My issue is about package functionality: when using facet_wrap I get a panel for NA values. However, the gg object (which the function plot() plots does not contain any NAs. I can see you run into the same issue. From your website, and using the same coded provided (see below), a NA panel is produced.

## load package
library("cregg")

## plot with facetting
plot(stacked) + ggplot2::facet_wrap(~ contest_no, nrow = 1L)


## session info for your system
R version 4.3.2 (2023-10-31)
Platform: aarch64-apple-darwin20 (64-bit)
Running under: macOS Sonoma 14.2.1

Matrix products: default
BLAS:   /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib 
LAPACK: /Library/Frameworks/R.framework/Versions/4.3-arm64/Resources/lib/libRlapack.dylib;  LAPACK version 3.11.0

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

time zone: Europe/Helsinki
tzcode source: internal

attached base packages:
[1] grid      stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] gtable_0.3.4     ggplot2_3.4.3    cregg_0.4.0      vtable_1.4.6     kableExtra_1.3.4
[6] dplyr_1.1.3      pacman_0.5.1    

loaded via a namespace (and not attached):
 [1] sandwich_3.0-2    utf8_1.2.3        generics_0.1.3    xml2_1.3.5        stringi_1.7.12   
 [6] lattice_0.21-9    digest_0.6.33     magrittr_2.0.3    evaluate_0.22     fastmap_1.1.1    
[11] plyr_1.8.9        Matrix_1.6-1.1    DBI_1.1.3         survival_3.5-7    httr_1.4.7       
[16] rvest_1.0.3       fansi_1.0.5       viridisLite_0.4.2 scales_1.2.1      cli_3.6.1        
[21] crayon_1.5.2      mitools_2.4       rlang_1.1.1       cowplot_1.1.1     munsell_0.5.0    
[26] splines_4.3.2     withr_2.5.1       tools_4.3.2       colorspace_2.1-0  webshot_0.5.5    
[31] vctrs_0.6.3       R6_2.5.1          zoo_1.8-12        lifecycle_1.0.3   stringr_1.5.0    
[36] ggstance_0.3.6    pkgconfig_2.0.3   pillar_1.9.0      Rcpp_1.0.11       glue_1.6.2       
[41] systemfonts_1.0.4 lmtest_0.9-40     xfun_0.40         tibble_3.2.1      tidyselect_1.2.0 
[46] rstudioapi_0.15.0 knitr_1.44        farver_2.1.1      htmltools_0.5.6.1 survey_4.2-1     
[51] labeling_0.4.3    rmarkdown_2.25    svglite_2.1.2     compiler_4.3.2