Is there a way to set a global option (either through options() or knitr::opts_chunk$set() or something else) to set all dates in a knitr/Rmd document to be formatted in a particular style. So instead...

I have generated a report using rmarkdown. I would like to generate a second report using variables I created within the first rmarkdown file. For instance, say my first document is : --- output: html...

I have a series of .png images that I would like to add notes to in an Rmarkdown document that I am knitting to a .pdf. The basic code for each image looks like this: ```{r certs_coefplot, out.width=&...

Is it possible to create a correlation matrix like in the image below using knitr() or similar? for res <- cor(iris[,1:4])