问题
I am using Knit PDF to compile a beamer presentation in RStudio.
---
title: "A.P. Statistics"
author: "Notes for Chapter 3.Rmd"
date: "Monday, October 13, 2014"
output: beamer_presentation
---
## Computer Output
```{r}
summary(lm(cars$dist~cars$speed))
```
How can I change the font size (just for this one chunk, leaving other chunks the same font size) so that the output of this command fits on one slide?
回答1:
One solution is using knitr
hooks. A hook is code that will run before or after the chunk code is executed. You could use it to insert a LaTeX fontsize command in the file.
```{r echo=FALSE}
knitr::knit_hooks$set(mysize = function(before, options, envir) {
if (before)
return(options$size)
})
```
Know you can change the size by
```{r mysize=TRUE, size='\\large'}
1:10
```
One Drawback is that this type of hook will affect all the fonts on a slide, i.e. also the echoed R-Code. Though cumbersome, you could use two consecutive chunks (1st: echo, results no; 2nd: no echo, results yes) to evade this.
```{r results="'hide'}
1:10
```
```{r echo=FALSE, mysize=TRUE, size='\\large'}
1:10
```
PS. Maybe there is a better way by modifying output hooks instead of chunk hooks.
回答2:
Here's how i do it ...
add the following to your slideStyle.sty
file
% set font size to 7 with line breaks at 8
\newcommand\FontSmall{\fontsize{7}{8}\selectfont}
call the file at the top of your markdown:
output:
beamer_presentation:
includes:
in_header: "P:/R/Slides/slideStyles.sty"
and then in your .Rmd
file add the below
## Tiny font slide
\FontSmall
here is some tiny font ...
来源:https://stackoverflow.com/questions/26372138/beamer-presentation-rstudio-change-font-size-for-chunk