---
title: "TP5"
author: "FX Jollois"
date: "17/10/2016"
output: html_document
---

```{r initialisation, include = FALSE}
knitr::opts_chunk$set(echo = FALSE)
```

## Données

Le jeu de données `mtcars` contient `r nrow(mtcars)` lignes et `r ncol(mtcars)` colonnes.

```{r donnees}
knitr::kable(mtcars)
```

## Consommation

```{r conso_hist}
hist(mtcars$mpg, col = "red", main = "")
```

```{r conso_box}
boxplot(mtcars$mpg, col = "red", main = "", horizontal = TRUE)
```

## Transmission

```{r trans_create, echo = TRUE}
mtcars$trans = factor(mtcars$am, labels = c("automatic", "manual"))
```

```{r trans_table}
knitr::kable(setNames(data.frame(table(mtcars$trans)), c("Transmission", "Effectif")))
```

```{r trans_pie, fig.cap="Répartition des voitures selon leur transmission", fig.width=2.5, fig.height=2.5, fig.align='center'}
par(mar = rep(.1, 4)) # permet de réduire les marges de la figure
pie(table(mtcars$trans), col = c("orange", "blue"))
```

## Consommation et transmission

```{r conso_trans, fig.cap="Consommation des voitures selon leur transmission", fig.subcap="test", fig.align='center', fig.width=2.5, fig.height=2.5}
par(mar = c(2, 2, 0, 0) + .1)
boxplot(mpg ~ trans, mtcars, col = c("orange", "blue"))
```