---
title: "Importing data into R"
author: "Thibaut Jombart"
date: "2018-11-15"
output:
  ioslides_presentation:
    incremental: false
---

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img {
    border-radius: 8px;
	box-shadow: 5px 5px 5px #999;
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## What data usually look like

<center> 
<img src="../../img/slides/shot_spreadsheet.png" width="75%">
</center> 

<br>
Typical spreadsheet:

- <font color="#99004d">rows</font>: observations (typically individuals)
- <font color="#99004d">columns</font>: variables


## What data look like in R
 
<center> 
<img src="../../img/slides/shot_imported_data.png" width="70%">
</center> 

<br>
A <font color="#99004d">`data.frame`</font> is the R equivalent of a
spreadsheet.
 

## How does the magic happen

<center> 
<img src="../../img/slides/magic.png" width="35%">
</center> 

> <font color="#99004d">Basic R:</font>

- `read.table("some_data.txt")` for general text files
- `read.csv("some_data.csv")` for csv files

> <font color="#99004d">In packages:</font>

- `readr::read_csv("some_data.csv")` for csv files
- `readxl::read_xlsx("some_data.xlsx")` for Excel format
- `haven::read_dta("some_data.dta")` for Stata 
- ...