[R] Knitr: setting echo = FALSE globally [RESOLVED]

[Rich Shepard]

On Mon, 20 Jul 2015, John Kane wrote:

> I have no idea wha that chunk is not working but I think you can get the
> same result using the old method Stick the following in an ERT box:
>
> <<set-ops, echo = FALSE>>=
> opts_chunk$set(echo = FALSE)
> @

John,

   My original response was too large (3 attached PDF files) and was held for
moderator approval which is no longer needed.

   I found the magic solution; looks awkward, but it works.

   Near the top of the document (well before any R code) I insert a knitr
chunk containing the directive, opts_chunk$set(echo=FALSE). This is
immediately followed by an ERT box as above. The double whammy prevents R
code from echoing ... except for the contents of the leading chunk itself.

   Adding the option, echo=FALSE, to that leading chunk prevents it from
displaying.

   Note that both the chunk with opts_chunk$set() and the ERT is required to
prevent R code from displaying. No chunk but ERT box does not stop the
echoing.

Thanks for the pointer,

Rich