Dear Rainer
On Wed, Apr 25, 2012 at 5:34 PM, Rainer Schuermann <rainer.schuerm...@gmx.net> wrote: > <<chunk_name_1,eval=FALSE,echo=FALSE>>= > I like the 'eval=FALSE' trick. > SweaveInput( "setup.Rnw" ) > > and from here, I can suse the named chunks almost like function calls, as you > you describe below. The advantage (for me) is that I have only one place where > I maintain the functions code, and only one line in the "real document", > rather than a lot of code, possibly distributed over the document.. > This makes sense for LaTeX, but I actually use LyX and things are a bit more straightforward there. I can put the initialization chunks within a 'TeX inset' that can be collapsed; this way it contains all the necessary code, but takes up only one line in the editor. I attach an example .lyx file. I renamed it to .lyx.txt and cross finger that r-help will accept the attachment; make sure to rename it back when trying to open with LyX. Regards Liviu
#LyX 2.0 created this file. For more info see http://www.lyx.org/ \lyxformat 413 \begin_document \begin_header \textclass article \use_default_options true \begin_modules sweave \end_modules \maintain_unincluded_children false \language english \language_package default \inputencoding auto \fontencoding global \font_roman default \font_sans default \font_typewriter default \font_default_family default \use_non_tex_fonts false \font_sc false \font_osf false \font_sf_scale 100 \font_tt_scale 100 \graphics default \default_output_format default \output_sync 0 \bibtex_command default \index_command default \paperfontsize default \spacing single \use_hyperref false \papersize default \use_geometry false \use_amsmath 1 \use_esint 1 \use_mhchem 1 \use_mathdots 1 \cite_engine basic \use_bibtopic false \use_indices false \paperorientation portrait \suppress_date false \use_refstyle 1 \index Index \shortcut idx \color #008000 \end_index \secnumdepth 3 \tocdepth 3 \paragraph_separation indent \paragraph_indentation default \quotes_language english \papercolumns 1 \papersides 1 \paperpagestyle default \tracking_changes false \output_changes false \html_math_output 0 \html_css_as_file 0 \html_be_strict false \end_header \begin_body \begin_layout Standard \begin_inset ERT status collapsed \begin_layout Plain Layout <<echo=FALSE, results=hide>>= \end_layout \begin_layout Plain Layout library(xtable) \end_layout \begin_layout Plain Layout d <- iris \end_layout \begin_layout Plain Layout ind <- 1 \end_layout \begin_layout Plain Layout @ \end_layout \begin_layout Plain Layout \end_layout \begin_layout Plain Layout <<chunk_name_1,eval=FALSE,echo=FALSE>>= \end_layout \begin_layout Plain Layout x <- cor(d[ , ind]) \end_layout \begin_layout Plain Layout @ \end_layout \begin_layout Plain Layout \end_layout \begin_layout Plain Layout <<chunk_name_2,eval=FALSE,echo=FALSE>>= \end_layout \begin_layout Plain Layout # produce a nice table from some data \end_layout \begin_layout Plain Layout xtable(x) \end_layout \begin_layout Plain Layout @ \end_layout \end_inset \end_layout \begin_layout Standard Here's a sample use of Sweave macros. \end_layout \begin_layout Standard \begin_inset ERT status open \begin_layout Plain Layout <<echo=F, results=tex>>= \end_layout \begin_layout Plain Layout d <- mtcars \end_layout \begin_layout Plain Layout ind <- 1:3 \end_layout \begin_layout Plain Layout <<chunk_name_1>> \end_layout \begin_layout Plain Layout <<chunk_name_2>> \end_layout \begin_layout Plain Layout @ \end_layout \end_inset \end_layout \end_body \end_document
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