TeXnicle is my favourite editorfor writing LaTeX documents. It is available for Max OS X.

1. Technical College
2. Techniclean Xhp

So I’d like to use it when writing knitr‘s Rnw-files.

Rnw-files are LaTeX-files with embedded R-code in it. So Rnw-files need to bepreprocessed. The result is a tex-file which will be compiled by pdflatex or xelatex.

TeXnicle is described as 'is LaTeX editor designed for Mac OS X. It runs on Snow Leopard and Lion on 32-bit and 64-bit systems. TeXnicle is free (as in beer) and will remain so' and is an app in the Development category. There are seven alternatives to TeXnicle for a variety of platforms, including Linux, Windows, Mac, the Web and Android. The best practice to install MiKTeX, TeXnicCenter and Adobe or better SumatraPDF do the following: Download the installer program for MiKTeX (I suggest the complete installation, so use net installer to avoid missing packages like your fancyhdr.sty!); Install MiKTeX.

Processing is done by so called engines. TeXnicle comes with a bunch of differentengines. You can see them in preferences (hit ⌘-,) on tab “Typesetting”.

So we need to create a new engine which does knitr’s preprocessing.Just copy an existing one.

The engines are stored in

Use your favourite text-editor and add these lines:

between these lines here:

Also change the following line from

to

Save this new engine as xelatex_knitr.engine. Now you should see it in preferences after a restart of TeXnicle:

Technical College

Now you can create a new TeXnicle-project.Create a new file in it and use the extension .Rnw.

Techniclean Xhp

Last but not least you must choose the new engine for this project:

Hitting ⌘-r processes the Rnw-file and generates (hopefully) a pdf-file: