How can I set graphical parameters (par()) and structure options (strOptions()) in a knitr document?

Question

I am working on a knitr-sweave document and have found that global R options like

par(lwd=3)

and

strOptions(strict.width='cut')

do not take effect in later code chunks. I can specify these options as arguments each time I plot() or str(), so it's not a huge problem. I'm just wondering if anyone has any insight into this. Should I be caching the code chunk where I set these options? I call some libraries in early code chunks and set variables in others and they all seem to be accessible "globally" (ie in later code chunks).

Answer 1

I believe I can help you with setting strOptions globally. Just set your str options as a list under options , like this:

options(str = list(strict.width = "cut"))