On Mon, Sep 2, 2013 at 5:01 PM, David Epstein <david.epst...@warwick.ac.uk> wrote: > Dear Yihui > Thanks very much for drawing my attention to knitr, which I had not heard of > before. Also thanks for pointing out the bug in Sweave, which I don't fully > understand, but I don't want to spend time and effort on understanding it. So > I hope you will find time to report the bug. I was pretty sure there was a > bug somewhere that was preventing me from doing what I wanted to do in > Sweave, but I misdiagnosed the source of the problem. > > I notice you didn't use print() or cat() in your short program for knitr. Is > it the case that it's necessary to use print() or cat() with \Sexpr in > Sweave, but unnecessary in knitr?
No, print() is superfluous; it is not necessary for either Sweave or knitr, and cat() is a wrong way to go here, since cat() returns character(0). > > I'll stick to Sweave for my current project, and try out knitr on my next > project. I would welcome a list of documents about knitr that I should > download, so as to make it as easy as possible to get started. I don't want > to understand the internals of knitr, but I am interested in any documents on > knitr, written by you or by others, directed at the user, rather than at > programmers of packages. Electronic version of the documentation: http://yihui.name/knitr Paper version: http://www.amazon.com/gp/product/1482203537 You do not need to understand the internals of knitr, otherwise I would not mention it at all. Depending on the size and complexity of your project, it may take you a few seconds or hours to switch from Sweave to knitr: http://yihui.name/knitr/demo/sweave/ > > Is it convenient to use vi(m) to produce knitr source? Can vi(m) be > integrated into the knitr package? My experience with editors designed > specially to work with particular products (like the built-in editor for > TeXWorks on the Mac) do not have the power of vi(m) and emacs, and I require > this power. Whatever editor you use: http://yihui.name/knitr/demo/editors/ > > @Duncan: thanks for indicating the use of cat() instead of print(). However, > due to the bug in Sweave pointed out by Yihui, replacing print by cat didn't > help me. > > Thanks > David Regards, Yihui -- Yihui Xie <xieyi...@gmail.com> Web: http://yihui.name Department of Statistics, Iowa State University 2215 Snedecor Hall, Ames, IA ______________________________________________ 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.
