r - How to specify global chunk option in a rmarkdown website? -


it possible create website several rmarkdown files. each rmarkdown file, can specify global options like: 

```{r setup, include=false} knitr::opts_chunk$set(echo = false, message=false, warning=false) ```

if want apply these options rmd files, can put same code in each file.

i know if possible put code somewhere can shared every rmd files. in fact, sometimes, want make change (for example set echo = true), , want once entire website.

you can include child document

```{r, child="_setup.rmd"} ```

at beginning of each rmd file.


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