reference a previously defined object in a `knitr` Rnw chunk figure caption

Question

Is it possible to reference a previously defined object in a knitr Rnw chunk figure caption?

<<chunk1>>=
  myObj <- "caption"
@

<<chunk2, fig.cap="This is my \\Sexpr{myObj}">>=
  plot(1,2)
@

This SO answer shows how to use LaTeX in a figure caption, but I can't get the same idea to work with \Sexpr{} and an R object.

Does `fig.cap=paste("This is my", myObj)` work? – MrFlick Dec 17 '15 at 17:08 — MrFlick, Dec 17 '15 at 17:08
yes, @MrFlick. good solution. – Eric Green Dec 17 '15 at 17:11 — Eric Green, Dec 17 '15 at 17:11

score 2 · Accepted Answer · answered Dec 18 '15 at 02:09

2

@MrFlick offered a simple solution:

fig.cap=paste("This is my", myObj)

Documenting here to close the question.

answered Dec 18 '15 at 02:09

Eric Green

1 Answers1