Hi Dan, Duncan and Yihui: I apologize for my late response.

Dan: Your backslash explanation was great but yes, I think there was a
transmission problem in the link I
sent. I made the changes and everything compiled without a glitch but the
actual tex file ends
up with many begin{Schunk} and end{Schunk} statements and somehow I think
this causes the pdf to
not get put in the document. But atleast I learned I now understand the
backslash issue and why my attempt wasn't working.  So, you solved the
problem that I had but another different issue now lurks
but, given below, I'm gonna let it go.  Thanks.

Duncan: Your solution worked.  I'm not sure why I didn't think of
seperating the two processes.
That was a nice idea. I guess I got caught up in the cat method once I saw
it.  Thanks.

Yihui: I'm starting to learn Rstudio by going through the recent book out
on it. There's a section
about knitR in the book so I hope to go over that and then turn to many of
your other documents.
Thanks for recommending knitR ( I loved the kitten statement at the link,
especially since I have cats ) and it is something I plan on learning, in
addition to 20 other thousand things on my list of "to be learned".


Mark









On Wed, Feb 13, 2013 at 9:00 PM, Yihui Xie <xie@yihui.name> wrote:

> 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 <xieyihui@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 <markleeds2@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.
>

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