add an exemple about how to add a logo in header or footer

[cderv]

Based on this SO question, this could be a good complement to this chapter
https://dr-harper.github.io/rmarkdown-cookbook/add-custom-headers-and-fsooters.html

[cderv]

Related :
https://stackoverflow.com/questions/43009788/insert-a-logo-in-upper-right-corner-of-r-markdown-html-document

uses html in code and css styling.

```{r, echo=FALSE}
htmltools::img(src = knitr::image_uri(file.path(R.home("doc"), "html", "logo.jpg")), 
               alt = 'logo', 
               style = 'position:absolute; top:0; right:0; padding:10px;')
```

[cderv]

Related:
https://stackoverflow.com/questions/29389149/add-image-in-title-page-of-rmarkdown-pdf

uses the titling latex package

header-includes:
- \usepackage{titling}
- \pretitle{\begin{center}\LARGE\includegraphics[width=12cm]{my_graphic.png}\\[\bigskipamount]}
- \posttitle{\end{center}}

[cderv]

for ioslide https://stackoverflow.com/questions/24131827/shiny-presentation-ioslides-custom-css-and-logo

[dr-harper]

Related:
https://stackoverflow.com/questions/29389149/add-image-in-title-page-of-rmarkdown-pdf

uses the titling latex package

header-includes:
- \usepackage{titling}
- \pretitle{\begin{center}\LARGE\includegraphics[width=12cm]{my_graphic.png}\\[\bigskipamount]}
- \posttitle{\end{center}}

This example is slightly different to the other examples, in that it is only for the cover page. But I have added it in e8693bd.

I am starting to see limitations in the way I am structuring the chapters. There are going to be some shorter sections like this where there is not a lot to really say. I will stick with the current format for now, but I was thinking that it might be an idea to start each chapter with a section of "10 quick tips" or something for people to quickly jump into, and then having longer sections for some of the ore complicated ideas.

[nmolanog]

in the html answer, logo overlaps with header, in deed the logo has its own div an is not nested in header div.