I am trying to insert logo into beamer presenation using Rmarkdown, and it looks like size controls in \logo{\includegraphics[height=1cm,width=3cm]{logo.png}}
do not work, no matter what values I put there, image is always of the same size. Any suggestions besides modifying image manually?
---
title: "Presentation"
author: "Author"
output:
beamer_presentation:
includes:
in_header: mystyle.tex
---
## R Markdown
This is an R Markdown presentation. Markdown is a simple formatting
syntax for authoring HTML, PDF, and MS Word documents. For more
details on using R Markdown see <http://rmarkdown.rstudio.com>.
When you click the **Knit** button a document will be generated that
includes both content as well as the output of any embedded R code
chunks within the document.
## Slide with Bullets
- Bullet 1
- Bullet 2
- Bullet 3
## Slide with R Code and Output
```{r}
summary(cars)
```
## Slide with Plot
```{r, echo=FALSE}
plot(cars)
```
This is mystyle.tex
\logo{\includegraphics[height=1cm,width=3cm]{logo.png}}
\usetheme{Madrid}
\usefonttheme{serif}
\institute{Institute}
\setbeamertemplate{navigation symbols}{}
UPDATE: Quick work around - simply modifying image will not work - image is ugly and pixelated. Simply converting to pdf also didn't work well, so I used following R code to create pdf and use it in \logo{\includegraphics{logo.pdf}}
library(png)
library(grid)
img <- readPNG('logo.png')
img <- rasterGrob(img, interpolate=TRUE)
pdf(file = 'logo.pdf', width = 1, height = 0.25)
grid.newpage()
grid.raster(img)
dev.off()
I found solution; in beamer manual there is another way of using logo function and it works fine.
\pgfdeclareimage[height=0.2787cm, width=2.5cm]{logo}{logo.png}
\logo{\pgfuseimage{logo}}
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