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day5_gapminder_analysis_example.Rmd
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day5_gapminder_analysis_example.Rmd
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---
title: "gapminder_teaching_rmd"
author: "Sarah Pederzani"
date: "26 11 2020"
output:
html_document:
keep_md: true
---
# install packages
install.package("knitr")
# Markdown formatting
markdown is a markup language that is a lightweit way of formatting text
bold - **bold**
italic - *italics*
subscript - H~2~O
superscript - ^14^C
bulleted lists
* listpoint 1
* oh look more listed stuff
* lists all the way down
or use
- look at my awesome bullet point
- lists so nice to tidy
numbered lists
1. first point
2. second point
3. third point
4. many points
section headings
# Title
## Main section
### sub-section
#### sub-sub section
## Compiling
push the knit button to compile
### Challenge 1
delete all the code chunks and write some markdown
then compile to a html document
## More Markdown
putting a hyperlink -
[our course website](https://babeheim.com/2021-11-29-leipzig-online/)
including an image
![caption](https://smea.uw.edu/wp-content/uploads/sites/11/2017/03/CURRENTSBLOG_Cat_2.jpg)
or
![caption](compiling_workflow.png)
## Latex equations
Latex equations with Latex math mode
Put some inline Latex math mode like so $E = mc^2$
Or put separated equations like this:
$$y = \mu + \sum_{i=1}^p \beta_i x_i + \epsilon$$
## Code chunks
a code chunk example
```{r load_data}
gapminder <- read.csv("data/gapminder_data.csv")
```
accents denote the chunk
r denotes the programming language
followed by the chunk name - use unique chunk names that are descriptive of what you're doing in the chunk
use the navigation bar to see document outline
### Challenge 2
add code chunks to
- load the ggplot2 package
- read the gapminder data
- create a plot
#### Solution
```{r load-ggplot2}
library("ggplot2") # loading ggplot2
```
```{r read-gapminder-data}
gapminder <- read.csv("data/gapminder_data.csv") # read in gapminder data
```
```{r make-plot}
ggplot(gapminder, aes(x = year, y = lifeExp))+ # plot life exp vs year
geom_point()
```
## How are things compiled
talk about the knitting and compilation workflow with image
## Chunk options
options that control how chunks are trated
examples:
echo = FALSE - supress code printing
results = "hide" - print results
eval = FALSE - show code but don't evaluate the code
warning = FALSE - don't print warnings
message = FALSE - don't print messages (i.e. package loading messages)
fig.height - figure height (in inches)
fig.width - figure width (in inches)
fig.cap - figure caption
so for example
```{r load_libraries, echo = FALSE, message = FALSE, warning = FALSE}
library("dplyr")
library("ggplot2")
```
### global chunk options
you can use a first chunk in your document to specific global chunk options
that are applied to every chunk in your document
```{r global_options, echo = FALSE}
knitr::opts_chunk$set(fig.path = "Figs/", message = FALSE, warning = FALSE,
echo = FALSE)
```
the option fig.path will set where figures will be saved
you can use yaml options to automatically keep a copy of all your figures
output:
html_document:
keep_md: true
figures will be named with the code chunk name
you can also use something like fig.path = "Figs/analysis_" which will make all figure file names start with "analysis_"
talk about making a setup code chunk in the beginning for global options and packages and such
### Challenge 3
use chunk options to control the size of a figure and to hide the code
```{r echo = FALSE, fig.width = 3}
plot(faithful)
```
## Inline R Code
use inline code like this
The population of Afghanistan was `r gapminder[1,3]` in `r gapminder[1,2]`.
### Challenge 4
try some inline R code
#### Solution
Here’s some inline code to determine that 2 + 2 = `r 2+2`.
## optional: tables
make tables using the kable function that is included in the knitr package
```{r table}
library("knitr")
gapminder_subset <- gapminder[1:5,]
kable(gapminder_subset)
```
Other table packages
- kableExtra (extra formatting for kable package)
- pander
## Other output formats
## pdf
we need a latex installation, make using tinytex package
install.packages("tinytex")
tinytex::install_tinytex()
is specified in the yaml header using
output:pdf_document
or open a new default file
use the rticles package
install.packages("rticles")
### citations
just quickly mention how it works:
yaml:
bibliography: mybibfile.bib
csl: elsevier-vancouver.csl
then use [@Dirac1953888] syntax for citations
### ressources
https://bookdown.org/yihui/rmarkdown/
https://rmarkdown.rstudio.com/
https://davidgohel.github.io/officedown/
https://ardata-fr.github.io/flextable-book/
papers using docx output
- La Ferrassie osf: https://osf.io/sfnb8/
- BK manuscript osf: https://osf.io/tk9dc/