knitr → LaTeX→ HTML testing

knitr →LATEX→ HTML testing

July 31, 2012

I have been trying to get a an Sweave →LATEX → HTML pathway that works via knitr …

1 stuff

(An equation)

a+ b

(1)

Some code:

 
## here’s a comment ... 
(x ← 5∧2)

 
[1] 25

 
y ← 17

I prefer the native highlighting (as it comes out in the PDF format) to the render_listings version, but I could live with it …The assignment arrow <- inside the Sinput chunk confuses htlatex — have to hit s three times, once for each of three htlatex passes, to skip over errors — but seems to come out OK in the final document. Is there a fix to Sweavel.sty, or something else, that will make it work?

I have searched for how to use htlatex in error-skipping mode, but everything I can find says “don’t skip errors, fix them” …

A figure:

 
set.seed(101) 
plot(rnorm(10), rnorm(10))

pict

Session info:

 
sessionInfo()

 
R Under development (unstable) (2012-07-27 r60013) 
Platform: i686-pc-linux-gnu (32-bit) 
 
locale: 
 [1] LC_CTYPE=en_CA.utf8       LC_NUMERIC=C 
 [3] LC_TIME=en_CA.utf8        LC_COLLATE=en_CA.utf8 
 [5] LC_MONETARY=en_CA.utf8    LC_MESSAGES=en_CA.utf8 
 [7] LC_PAPER=C                LC_NAME=C 
 [9] LC_ADDRESS=C              LC_TELEPHONE=C 
[11] LC_MEASUREMENT=en_CA.utf8 LC_IDENTIFICATION=C 
 
attached base packages: 
[1] stats     graphics  grDevices utils     datasets  base 
 
other attached packages: 
[1] knitr_0.7 
 
loaded via a namespace (and not attached): 
[1] digest_0.5.2   evaluate_0.4.2 formatR_0.6    plyr_1.7.1 
[5] stringr_0.6    tools_2.16.0

2 references

From Yihui Xie, about using render_listings() (and the fact that he prefers to start with a markdown document): https://groups.google.com/forum/#!msg/knitr/Dv2JmcDcuBo/dYkp2rEuSlAJ
htlatex image processing: http://tex.stackexchange.com/questions/46156/pdf-image-files-and-htlatex
htlatex formatting (I don’t have this working right yet): http://tex.stackexchange.com/questions/7216/how-to-get-tex4ht-to-respect-listings-styling-better
more on htlatex/listings formatting (haven’t tried this yet): http://tex.stackexchange.com/questions/64054/latex-to-html-preserving-code-coloring-from-listings

3 htlatex

For htlatex: use usepackage{graphicx} and DeclareGraphicsExtension{.pdf} in the preamble of the document.

htlatex [filename] myhtml

Here is the myhtml.cfg file I’m using:

  %% http://tex.stackexchange.com/questions/46156/pdf-image-files-and-htlatex
  \Preamble{html}
    \Configure{graphics*}
           {pdf}
           {\Needs{"convert \csname Gin@base\endcsname.pdf
                                 \csname Gin@base\endcsname.png"}%
            \Picture[pict]{\csname Gin@base\endcsname.png}%
           }

  \begin{document}
    \Css{div.lstinputlisting table.caption {
      background: rgb(64,128,64);
      color: white;
      font-family: sans-serif;
      padding-right: 100\%;
  }
  div.lstinputlisting .pcrro7t- {
      color: red;
  }
  }
  \EndPreamble

4 latexml

latexml is an alternative conversion program that doesn’t seem to work as well, at the moment …

 
system(”latexml --dest=’knitr_listings_test.xml’ knitr_listings_test.tex”) 
system(”latexmlpost --dest=’knitr_listings_test.xhtml’ knitr_listings_test.xml”)