Other people in this thread have explained the rule of double backslashes. I just want to add one more comment:
That clever solution was in 2009 when knitr has not come out, and I have used this picture several times to show how much I dislike it: http://yihui.name/en/2012/06/enjoyable-reproducible-research/ With knitr, you can easily write your big code chunk (with lots of "cats" jumping around) in a much more compact way: <<figthree, fig.pos="ht!", fig.align="center", out.width="5in", out.height="5in", fig.cap="The resulting unpruned regression tree of the California real estate data">>= plot(cal.tree,uniform=TRUE,compress=TRUE,margin=0.0) text(cal.tree, all=TRUE,fheight=1.0,fwidth=1.0) @ Note the number "5" alone is not a legal LaTeX length; you should add the unit such as "5in" or "5cm", etc. This chunk in knitr will generate everything for you: - the figure environment - center the figure - add the figure position ht! - add the figure caption - add figure width and height - add the figure label fig:figthree You, as the author, only write the R code (instead of both R and LaTeX); other people, as the readers, only see the R code. Everything else should go behind the scene. Regards, Yihui -- Yihui Xie <xieyi...@gmail.com> Phone: 515-294-2465 Web: http://yihui.name Department of Statistics, Iowa State University 2215 Snedecor Hall, Ames, IA On Wed, Feb 13, 2013 at 4:59 PM, Mark Leeds <marklee...@gmail.com> wrote: > Hi Everyone: I was having trouble getting the plot size correct when > putting a plot in an sweave document. So, I searched on the internet and I > found a clever solution where the person uses > the cat function to write latex code so he can include the cat code in the > chunk and place the plot using width and height. The solution is here: > https://stat.ethz.ch/pipermail/r-help/2009-April/195094.html. > > But the solution uses a backslash before the ending quotes in the cat > statements that might be windows relevant possibly ? I'm not sure about > that part but I'm on linux and when I tried my way to mimic that solution > in the latex/sweave code below ( I think it's the same solution but without > the backslash on the closing quotes. I tried that also but got a different > error ) , Sweave doesn't like the start of the includegraphics command. The > error I get from Sweave is > > #======================================================= > Error: chunk 9 (label = fig3) > Error : '\i' is an unrecognized escape in character string starting "\i" > Execution halted > :~/research/equity/projects/tree_returns/report> > #===================================================== > > The code is below but if anyone is interested and thinks they need the > whole file to look at the problem, I can send it. I just didn't want to > send the whole file here. Definitely the error has to do with the chunk > below for sure ( even though it says chunk 9 because there is no chunk 9 > ). Thanks a lot to anyone who can be bothered investigating because I've > spent pretty much the whole day on this and think it's > time to surrender !!!!!!!!!! or atleast give up for now and come back to it > with a fresher brain. Have a good night. > > # THE LATEX/SWEAVE CODE > #================================================================ > > cal.tree is created in a previous chunk and that's fine. > > <<chunk08,label=fig3, fig=FALSE,result = tex>>= > wid <- 5 > hei <- 5 > pdf("reg_tree-fig3.pdf", width = wid, height = hei) > plot(cal.tree,uniform=TRUE,compress=TRUE,margin=0.0) > text(cal.tree, all=TRUE,fheight=1.0,fwidth=1.0) > dev.off() > cat("\begin{figure}[ht!]") > cat("\begin{center}") > cat("\includegraphics[width = ", wid, ", height = ", hei, > "]{reg_tree-fig3}") > cat("\end{center}") > cat("\caption{The resulting unpruned regression tree of the california real > estate data}") > cat("\label{FIG:figthree}") > cat("\end{figure}") > @ > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
