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knitr's purl() leads to large vertical spaces (empty lines) in the resulting R script


R script line numbers at error?How can I read command line parameters from an R script?Run R script from command linevertically distribute multiple lines with smart spacingHow to adjust code block line spacing in knitr?executing a script with spaces in the path leading to itSkip all leading empty lines in read.csvLarge space between y-ticks and y-labelHow to make xtable draw the vertical lines by default in a knitr documentEnsuring the same vertical space after a knitrout environment






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








0















As you can see from purl()ing the following minimal working example, there is a lot of vertical space in the resulting .R script before str(X). The empty chunk also introduces another empty line. Why? If you have various side-by-side plots (through nested chunks, for example), then the vertical space can add up quite a bit (leaving half a page empty in the resulting .R script). In my opinion, one empty line should be the default as vertical space between chunks. I played with tidy and tidy.opts but could not solve this problem. Is this a known issue with knitr or am I just using it in the wrong way?



documentclassarticle
begindocument
<<chunk1>>=
library(mvtnorm)
set.seed(271)
X <- rmvt(1000, df = 3.5)
U <- apply(X, 2, rank) / (nrow(X) + 1)
<<chunk1-fig, eval = FALSE, comment = "">>=
plot(X)
@
<<chunk2-fig, eval = FALSE, comment = "">>=
plot(U)
@
setkeysGinwidth=textwidth
beginfigure[htbp]
centering
<<fig_chunk_1, echo = FALSE, purl = FALSE, fig.width=6, fig.height=6>>=
<<chunk1-fig>>
@
endfigure
<<echo = FALSE, purl = FALSE>>=
@
<<chunk2>>=
str(X)
@
enddocument









share|improve this question






























    0















    As you can see from purl()ing the following minimal working example, there is a lot of vertical space in the resulting .R script before str(X). The empty chunk also introduces another empty line. Why? If you have various side-by-side plots (through nested chunks, for example), then the vertical space can add up quite a bit (leaving half a page empty in the resulting .R script). In my opinion, one empty line should be the default as vertical space between chunks. I played with tidy and tidy.opts but could not solve this problem. Is this a known issue with knitr or am I just using it in the wrong way?



    documentclassarticle
    begindocument
    <<chunk1>>=
    library(mvtnorm)
    set.seed(271)
    X <- rmvt(1000, df = 3.5)
    U <- apply(X, 2, rank) / (nrow(X) + 1)
    <<chunk1-fig, eval = FALSE, comment = "">>=
    plot(X)
    @
    <<chunk2-fig, eval = FALSE, comment = "">>=
    plot(U)
    @
    setkeysGinwidth=textwidth
    beginfigure[htbp]
    centering
    <<fig_chunk_1, echo = FALSE, purl = FALSE, fig.width=6, fig.height=6>>=
    <<chunk1-fig>>
    @
    endfigure
    <<echo = FALSE, purl = FALSE>>=
    @
    <<chunk2>>=
    str(X)
    @
    enddocument









    share|improve this question


























      0












      0








      0








      As you can see from purl()ing the following minimal working example, there is a lot of vertical space in the resulting .R script before str(X). The empty chunk also introduces another empty line. Why? If you have various side-by-side plots (through nested chunks, for example), then the vertical space can add up quite a bit (leaving half a page empty in the resulting .R script). In my opinion, one empty line should be the default as vertical space between chunks. I played with tidy and tidy.opts but could not solve this problem. Is this a known issue with knitr or am I just using it in the wrong way?



      documentclassarticle
      begindocument
      <<chunk1>>=
      library(mvtnorm)
      set.seed(271)
      X <- rmvt(1000, df = 3.5)
      U <- apply(X, 2, rank) / (nrow(X) + 1)
      <<chunk1-fig, eval = FALSE, comment = "">>=
      plot(X)
      @
      <<chunk2-fig, eval = FALSE, comment = "">>=
      plot(U)
      @
      setkeysGinwidth=textwidth
      beginfigure[htbp]
      centering
      <<fig_chunk_1, echo = FALSE, purl = FALSE, fig.width=6, fig.height=6>>=
      <<chunk1-fig>>
      @
      endfigure
      <<echo = FALSE, purl = FALSE>>=
      @
      <<chunk2>>=
      str(X)
      @
      enddocument









      share|improve this question














      As you can see from purl()ing the following minimal working example, there is a lot of vertical space in the resulting .R script before str(X). The empty chunk also introduces another empty line. Why? If you have various side-by-side plots (through nested chunks, for example), then the vertical space can add up quite a bit (leaving half a page empty in the resulting .R script). In my opinion, one empty line should be the default as vertical space between chunks. I played with tidy and tidy.opts but could not solve this problem. Is this a known issue with knitr or am I just using it in the wrong way?



      documentclassarticle
      begindocument
      <<chunk1>>=
      library(mvtnorm)
      set.seed(271)
      X <- rmvt(1000, df = 3.5)
      U <- apply(X, 2, rank) / (nrow(X) + 1)
      <<chunk1-fig, eval = FALSE, comment = "">>=
      plot(X)
      @
      <<chunk2-fig, eval = FALSE, comment = "">>=
      plot(U)
      @
      setkeysGinwidth=textwidth
      beginfigure[htbp]
      centering
      <<fig_chunk_1, echo = FALSE, purl = FALSE, fig.width=6, fig.height=6>>=
      <<chunk1-fig>>
      @
      endfigure
      <<echo = FALSE, purl = FALSE>>=
      @
      <<chunk2>>=
      str(X)
      @
      enddocument






      r knitr






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      asked Mar 26 at 22:08









      Marius HofertMarius Hofert

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