Copied from the original posterdown repository as edits made by me to the package are unsuitable for a pull request. This has been altered to produce the poster presented by Shea Connell at the 2019 EACR Tracking Cancer conference.

Most of the modification come about from the requirement for an image prior to the two-column format being started, augmenting the template.tex file that posterdown uses to build the final formatted poster.

Installation

You can install and use this modified posterdown from github using the devtools package as seen below.

devtools::install_github("Shedimus/posterdown")

Instructions if you have never used RMarkdown

1. Install devtools package

   install.packages("devtools")

2. Install posterdown from github repo

   devtools::install_github("Shedimus/posterdown")

3. Install tinytexLatex libraries:

   tinytex::install_tinytex()

   NOTE This will take some time to load the LaTex Packages but is the best option (in my opinion) for keeping your Latex library as small as possible. After the first download of these libraries you will not need to do this again. To confirm that Tinytex is properly installed use: tinytex:::is_tinytex() and you should get a value of TRUE in the console.

   NOTE If you have conflicting versions of Latex (i.e. tinytex and MacTex), you could have problems rendering your poster. You may need to uninstall all versions, then start over by installing posterdown and tinytex from scratch.

posterdown

As a graduate student, I found that it is almost a rite of passage to take early research and analysis and generate a conference poster allowing for critical feedback, as well as meeting the people in your field. I have also noticed that many of my fellow graduate students use R and are also getting their feet wet with RMarkdown 😊; however, we always had to go back to using MS Powerpoint or Keynote or Adobe Illustrator for generating conference posters 😒. Posterdown was created as a proof-of-concept (to myself) that it is possible to make a beautiful poster using open source reproducible code.

From this:

To this:

Please feel free to give me feedback or requests for changes in the issues page. I am currently finishing up my Master's degree so I will have limited time to work on updating this package in the next few months but nevertheless I will do what I can! 😄

Overview

The posterdown package provides a familiar workflow for those used to working in RMarkdown. This package is currently focused on a single template called posterdown_pdf which is by default a 38in (H) x 45in (W) poster template but does allow for custom sizing, section headers, and colour options.

Using posterdown from RStudio

To use posterdown from RStudio:

1. Install the latest RStudio.

2. Install the posterdown package:

3. Use the New R Markdown dialog to create a conference poster from the templates

   

   NOTE If you do not see the posterdown template in this dialogue box try to restart the R session or close and re-open RStudio.

Customization

Posterdown uses Latex to generate the PDF poster but more specifically it uses the Memoir Latex class. Memoir was chosen for its flexibility in page sizing as well as thorough documentation. I am fairly new to the world of Latex, and found this class to have a reasonable amount of customization available, at least for my skill level. If there are any users who think there may be better options for down the road I am more than willing to listen!

YAML Options

YAML header options have been created to provide more freedom in design (i.e. colours, number of columns, and sizing) to fit a wide variety of requirements. Here are the default YAML options found in the .Rmd file:

Option	Description
title	Poster title, acts as you would expect from RMarkdown. You can add line breaks in your title with \break.
author	List of authors which (as of now) only has true support for a single author, however I have provided a hacky way to have many authors until I can find the time to figure out how to implement something like the rticles packages does
affiliation	Author affiliations, which just as the author section is currently a hacky version of what I would ultimately like to produce.
font_size	Represents the value for \normaltextsize in latex. All other font sizes are adjusted from this baseline. For example, the title in the skeleton document is given the Latex command \Huge, meaning that the title text will be "huge" relative to the font_size chosen. See Here for a useful resource for a better understanding of the Latex text sizing options.
font_family	Selects the font family to be used on the poster. In the future I will try to implement multiple font families for various components of the poster (such as different fonts for the title versus the main body text). For now, only standard Latex fonts are available, see here for a list of possible options.
title_bgcol	The background colour for the title section of the poster (currently using hex values to define this colour)
poster_bgcol	Background colour of the poster's main body section.
title_textcol	Colour of the main title text.
header_textcol	Colour of the Section Header Text.
cite_col	Colour of the citation link elements when using biblatex.
url_col	Colour of URL links specifically
link_col	Colour of in-document links (example would be referencing a Figure or a Table)
columnline_col	Colour of the line which divides each column in the poster
poster_height	Height of the final poster output. Units can be: "in", "mm", "cm"
poster_width	Width of the final poster output. Units can be: "in", "mm", "cm"
column_numbers	Number of columns you wish for the poster to have in the main section of the poster.
bibliography	Name of the .bib. file which you are using to source material. As of right now only biblatex is working but I intend to add support of natbib which is my preference.
output	For generating posterdown_pdf, in the future other poster designs or templates may be made for this package and thus this option in the YAML will be more flexible. For now this is the only option.

Markdown Customization

As you add content to your RMarkdown file, you will notice that the output pdf will fill in columns from left to right, and from top to bottom within columns. If you have more content for your poster than space is available on the default poster, it will spill onto a second page. If this occurs, you can try adding more columns and decreasing the font size (both in the YAML header) to make it work. Or, of course, edit the content to make it shorter. 😄