The default options of rmarkdown is to set the fig.width = 12. I would like it to auto-adujust for the width of a mobile device if this is possible.
I'm hosting the following Rmarkdown at http://akdata.org/misc/leafletmobile
---
title: "Untitled"
output: html_document
---
```{r}
library(leaflet)
leaflet() %>% addTiles()
``
It will adjust to the width of the screen when I play with different mobile devices in chrome devtools though. I have a physical Samsung Galaxy 5 that I'm testing with.