#LyX 2.0 created this file. For more info see http://www.lyx.org/ \lyxformat 413 \begin_document \begin_header \textclass article \begin_preamble \renewcommand{\textfraction}{0.05} \renewcommand{\topfraction}{0.8} \renewcommand{\bottomfraction}{0.8} \renewcommand{\floatpagefraction}{0.75} \end_preamble \use_default_options true \begin_modules knitr \end_modules \maintain_unincluded_children false \language english \language_package none \inputencoding default \fontencoding global \font_roman palatino \font_sans default \font_typewriter default \font_default_family default \use_non_tex_fonts false \font_sc true \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 true \pdf_bookmarks true \pdf_bookmarksnumbered true \pdf_bookmarksopen true \pdf_bookmarksopenlevel 2 \pdf_breaklinks false \pdf_pdfborder false \pdf_colorlinks false \pdf_backref false \pdf_pdfusetitle true \pdf_quoted_options "pdfstartview={XYZ null null 1}" \papersize default \use_geometry true \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 \leftmargin 3cm \topmargin 3cm \rightmargin 3cm \bottommargin 3cm \secnumdepth 2 \tocdepth 2 \paragraph_separation skip \defskip bigskip \quotes_language english \papercolumns 2 \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 open \begin_layout Plain Layout <>= \end_layout \begin_layout Plain Layout library(knitr) \end_layout \begin_layout Plain Layout opts_chunk$set(fig.path='figure/twocolumn-', fig.align='center', fig.show='hold') \end_layout \begin_layout Plain Layout render_listings() \end_layout \begin_layout Plain Layout @ \end_layout \end_inset \end_layout \begin_layout Title Using knitr in A Two-column Document \end_layout \begin_layout Author Yihui Xie \end_layout \begin_layout Standard We can use the \family typewriter figure* \family default environment in LaTeX so that figures can span over two columns. Because the output hooks use the \series bold framed \series default package which does not work well with the \family typewriter figure* \family default environment, we can either modify the output hooks or use other packages like \series bold listings \series default . For example, \end_layout \begin_layout Standard \begin_inset ERT status open \begin_layout Plain Layout <>= \end_layout \begin_layout Plain Layout <> \end_layout \begin_layout Plain Layout @ \end_layout \end_inset \end_layout \begin_layout Standard \begin_inset Float figure wide true sideways false status open \begin_layout Plain Layout \begin_inset ERT status open \begin_layout Plain Layout <>= \end_layout \begin_layout Plain Layout x=rnorm(100) \end_layout \begin_layout Plain Layout par(mar=c(4,4,.1,.1)) \end_layout \begin_layout Plain Layout boxplot(x) \end_layout \begin_layout Plain Layout hist(x,main='') \end_layout \begin_layout Plain Layout @ \end_layout \end_inset \end_layout \begin_layout Plain Layout \begin_inset Caption \begin_layout Plain Layout Two plots spanning over two columns. \end_layout \end_inset \end_layout \end_inset \end_layout \begin_layout Standard The output PDF file will be like: \begin_inset Flex URL status collapsed \begin_layout Plain Layout https://github.com/yihui/knitr/releases/download/doc/knitr-twocolumn.pdf \end_layout \end_inset . The Rnw source of this document is at \begin_inset Flex URL status collapsed \begin_layout Plain Layout https://github.com/yihui/knitr/blob/master/inst/examples/knitr-twocolumn.Rnw \end_layout \end_inset . \end_layout \end_body \end_document