Warning message for stat_ord_ellipse()

[lch14forever]

Thanks for the implementation of stat_ord_ellipse(). Really elegant that you made it compatible with other ordination methods in ggord.

However, I found it did not work on my side without attaching library plyr explicitly. Is this expected?

> p + geom_ord_ellipse(lty=2)
Warning message:
Computation failed in `stat_ord_ellipse()`:
could not find function "."

> sessionInfo()
R version 3.4.2 (2017-09-28)
Platform: x86_64-apple-darwin15.6.0 (64-bit)
Running under: macOS High Sierra 10.13.2

Matrix products: default
BLAS: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
LAPACK: /Library/Frameworks/R.framework/Versions/3.4/Resources/lib/libRlapack.dylib

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

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

other attached packages:
[1] MASS_7.3-47  yyplot_0.0.5 ggord_1.0.0 

loaded via a namespace (and not attached):
 [1] Rcpp_0.12.14      compiler_3.4.2    plyr_1.8.4        bindr_0.1        
 [5] R.methodsS3_1.7.1 R.utils_2.6.0     tools_3.4.2       digest_0.6.13    
 [9] tibble_1.3.4      gtable_0.2.0      qrcode_0.1.1      R.cache_0.12.0   
[13] pkgconfig_2.0.1   rlang_0.1.4       magick_1.6        rvcheck_0.0.9    
[17] yaml_2.1.14       bindrcpp_0.2      stringr_1.2.0     xml2_1.1.1       
[21] dplyr_0.7.4       httr_1.3.1        knitr_1.17        RISmed_2.1.7     
[25] grid_3.4.2        glue_1.1.1        R6_2.2.2          purrr_0.2.4      
[29] tidyr_0.7.2       ggplot2_2.2.1     tweenr_0.1.5      scholar_0.1.4    
[33] udunits2_0.13     magrittr_1.5      scales_0.5.0      units_0.4-6      
[37] rvest_0.3.2       assertthat_0.2.0  ggforce_0.1.1     colorspace_1.3-2 
[41] labeling_0.3      stringi_1.1.5     lazyeval_0.2.1    munsell_0.4.3    
[45] R.oo_1.21.0