[R] Unicode chars

[Enrico Schumann]

On Thu, 25 Aug 2022, dulcalma dulcalma writes:

> Dear All
>
>
> I was trying the supplementary file GS_main.R from
> https://esajournals.onlinelibrary.wiley.com/doi/abs/10.1002/ecy.3475
>
> I have tried to prevent latex compilation from failing using Sweave 
> after trying all the online fixes I could find including using Rterm 
> I could fix it if it was in the input but not in the output 
> I am using R version 4.2 on windows 11 with 64 GB memory
>
>
> Sweave code
>
> \begin{small}
> <<r0>>=
> library(emdbook) # version 1.3.12
> library(bbmle) # version 1.0.23.1
> library(pbmcapply) # version 1.5.0 
> library(tidyverse) # version 1.3.0
> library(ggpubr) # version 0.4.0
> @ %%
>
>
> <<r7>>=
> summaryTable <-
> tibble(model = m.names,
>        dim = m.dims[model],                 
>        score = m.loo[model],                
>        delScore = score - min(score),       
>        se_ose = se_ose[model],              
>        se_mod = se_mod[model]) %>% arrange(dim) %>%  mutate(index = 
> 1:length(dim))
> summaryTable
> @ %%
>
>
> Output
> \begin{Schunk}
> \begin{Sinput}
>   summaryTable <-
>   tibble(model = m.names,
>          dim = m.dims[model],                 
>          score = m.loo[model],                
>          delScore = score - min(score),       
>          se_ose = se_ose[model],              
>          se_mod = se_mod[model]) %>% arrange(dim) %>%  mutate(index = 
> 1:length(dim))
>   summaryTable
> \end{Sinput}
> \begin{Soutput}
> # A tibble: 10 × 7
>    model   dim score delScore se_ose se_mod index
>    <chr> <int> <dbl>    <dbl>  <dbl>  <dbl> <int>
>  1 zero      2  908.    5.84    40.1   4.14     1
>  2 d         3  904.    1.71    40.6   2.52     2
>  3 q         3  907.    4.92    40.2   3.80     3
>  4 qd        4  902.    0       40.7   0        4
>  5 qdi       5  903.    0.632   40.5   1.60     5
>  6 x         6  908.    5.58    40.2   5.53     6
>  7 xq        7  907.    4.81    40.3   5.36     7
>  8 xd        7  905.    2.96    40.5   5.04     8
>  9 xqd       8  903.    0.908   40.5   4.52     9
> 10 xqdi      9  904.    1.89    40.4   4.70    10
> \end{Soutput}
> \end{Schunk}
>
>
> The problem is the output from tibble 
> # A tibble: 10 × 7
>
>
> the \times character is Unicode U+00D7 or hex \xd7 and pdflatex lualatex 
> etc fail where this occurs
> Is there a way of adding "sanitizing" code in the output before 
> compiling 
> Or do I have to change it manually before compiling
>
>
> I do not want to switch to knitr. 
>
>
> Regards
>
>
> Duncan Mackay
>

You could try to automatically clean the code, by using
?iconv, say. But the results by not be satisfactory,
depending on what characters were used.

Sweave itself does not compile the LaTeX code. If you
run (in R) 

    Sweave(<filename.Rnw>, encoding = "utf8")

then it will produce the TeX file, which you can then
compile via LuaLaTeX or XeLaTeX [see
e.g. https://www.ctan.org/pkg/lualatex-doc].

For instance, on the command line, just say

    lualatex <filename.tex>

or another programme (such as latexmk) that your TeX
distribution provides.


If this is a vignette, you can specify a Makefile, see
https://cran.r-project.org/doc/manuals/R-exts.html#Writing-package-vignettes



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-- 
Enrico Schumann
Lucerne, Switzerland
http://enricoschumann.net