Multiple corresponding authors not working for the 'copernicus_article' template

[pzhaonet]

It is a good experience for me to write a Copernicus manuscript with the 'rticles' package. I've just found a problem that it seems not supporting multiple corresponding authors in the 'copernicus_article' template. A mini example could be produced by creating an .Rmd file in RStudio - File - New File - R Markdown - From Template - Copernicus Journal Article, and add one more line to the author information in the yaml:

author:
  - given_name: Daniel
    surname: Nüst
    affiliation: 1
    email: daniel.nuest@uni-muenster.de
    corresponding: true
  - given_name: Josiah
    surname: Carberry
    affiliation: 2
    email: j.carberry@orcid.org
    corresponding: true # one more line
  - given_name: Markus
    surname: Konkol
    affiliation: 1

Both Daniel and Josiah are supposed to the corresponding authors. However, only the last one is shown in the pdf file.

I found a loop in library/rticles/rmarkdown/templates/copernicus_article/resources/template.tex:

$for(author)$
$if(author.corresponding)$
\correspondence{$author.given_name$\ $author.surname$\ ($author.email$)}
$endif$
$endfor$

I guess there must be something wrong of rmarkdown for processing this loop. I hack the template by setting correspongdingauthors in the yaml header and using $correspongdingauthors$ in the template for temporary use.

Could you please have a look at it if it is a bug? Maybe it is a Pandoc issue? Just not sure...

Thanks a lot!

> xfun::session_info('rticles')
R version 3.5.2 (2018-12-20)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 14393), RStudio 1.2.1322

Locale:
  LC_COLLATE=English_United States.1252  LC_CTYPE=English_United States.1252    LC_MONETARY=English_United States.1252
  LC_NUMERIC=C                           LC_TIME=English_United States.1252    

Package version:
  base64enc_0.1.3  digest_0.6.18    evaluate_0.13    glue_1.3.1       graphics_3.5.2   grDevices_3.5.2  highr_0.7        htmltools_0.3.6 
  jsonlite_1.6     knitr_1.22       magrittr_1.5     markdown_0.9     methods_3.5.2    mime_0.6         Rcpp_1.0.1       rmarkdown_1.12.2
  rticles_0.7.1    stats_3.5.2      stringi_1.4.3    stringr_1.4.0    tinytex_0.11     tools_3.5.2      utils_3.5.2      xfun_0.5.2      
  yaml_2.2.0

[yihui]

I'm not really familiar with these journal format details. @nuest introduced the template via #172, and I wonder if he has an elegant solution for this case. I have a possible solution, but I'd like to hear his thoughts first.

[nuest]

I can take a look later this week, travelling now.

@pzhaonet the author guidelines are not very clear about that: do you have an example of a paper with multiple correspondence authors? Just wondering if this might not be a feature, i.e. Copernicus might only allow one corresponding author.

Does the PDF render fine with two \correspondence items in the LaTeX?

[nuest]

Looking at the original template, there is only one correspondence element. I will check with Copernicus staff about this.

[pzhaonet]

@yihui @nuest Thanks to you guys for your fast response. Well, I am not sure if Copernicus allows multiple corresponding authors. I am working on a manuscript, which has two corresponding authors. I will definitely figure it out when submission.

Anyway, I think it is a little confusing, from the technical point, that it does not work when there are multiple corresponding: trues in yaml and there is a loop in the .tex template.

I guess a line of correspongdingauthors: author1, author2 in the yaml header with $correspongdingauthors$ in the .tex template is a simple way, although it is not that elegant.

[nuest]

Response from Copernicus: use the following way for multiple authors:

\correspondence{Anja Rasmussen (anja.rasmussen@copernicus.org), Sarah Schneemann (sarah.schneemann@copernicus.org), and Daniel Nüst (daniel.nuest@uni-muenster.de)}

or with 2:

\correspondence{Anja Rasmussen (anja.rasmussen@copernicus.org) and Daniel Nüst (daniel.nuest@uni-muenster.de)}

It should be possible to build that string in the template, but I am unsure how to do it most elegantly to handle the different cases. @yihui Can you sketch how you would approach this?

[yihui]

I'd give users an option to specify corresponding authors separately:

$if(correspongdingauthors)$
\correspondence{$correspongdingauthors$}
$else$
$for(author)$
$if(author.corresponding)$
\correspondence{$author.given_name$\ $author.surname$\ ($author.email$)}
$endif$
$endfor$
$endif$

If there is only one corresponding author, they can specify it under the author field via corresponding: true, otherwise they provide the full list of corresponding authors by themselves via correspondingauthors.

[nuest]

I tried to find a way to construct the statement manually, but eventually went with @yihui's suggestion.

@pzhaonet Feel free to try out my fork's master branch, where this is implemented.

[pzhaonet]

Great! Many thanks!

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