I'm creating automated exams in markdown and I was wondering, whether there is a way to evaluate knitr inline code in knitr chunk. I have external dataset with various exam introductions, and I randomly load one of them. Because the introductions will be written by collegues without knowledge of R, I wanted to use inline code, as it is easy to inderstand.
I have following chunk
intro_str is load from file, for example to something like this
intro_str=In the research, there were
r n subjects recruited.
Where the n is value defined in the markdown script
I know that I can do something like
and redefine intro_str to be something like
intro_str <- "sprintf('In the research, there were %d subjects recruited. ',n)"
But when the intro_str gets more complicated, the traditional eval way would be too complicated to write for others
Is there a function .in knitr that can evaluate inline code in string?