2021-08-04-setting-graph-size.Rmd

---
description: How to Set Graph Size in ggplot2 with Plotly.
name: Setting Graph Size
permalink: ggplot2/setting-graph-size/
thumnail_github: setting-graph-size.png
layout: base
language: ggplot2
display_as: file_settings
page_type: u-guide
order: 10
output:
  html_document:
    keep_md: true
---

```{r, echo = FALSE, message=FALSE}
knitr::opts_chunk$set(message = FALSE, warning=FALSE)
```

## Default plot


```{r}
library(plotly)
library(ggplot2)

p <- ggplot(mpg, aes(displ, hwy)) + geom_point()+ 
  theme(
  plot.margin = margin(1, 1, 1, 1, "cm"),
  panel.background = element_rect(fill = "white"),
  plot.background = element_rect(
    fill = "grey90",
    colour = "black"
  )
)

ggplotly(p)
```


<!--------------------- EXAMPLE BREAK ------------------------->

## Add margin

To add margin use `plot.margin()`. 

For the argument you can either use `margin(2, 2, 2, 2, "cm")` or `unit(c(2,2,2,2), "cm")`.

This two arguments are shorthand for `margin`:
* `t` = 2  - top
* `r` = 2  - right
* `b` = 2  - bottom
* `l` = 2  - left
* `unit ` = "cm"



```{r}
library(plotly)
library(ggplot2)

p <- ggplot(mpg, aes(displ, hwy)) + geom_point()+ 
  theme(
  plot.margin = margin(1, 1, 2, 2, "cm")
)

ggplotly(p)
```

<!--------------------- EXAMPLE BREAK ------------------------->

## Change background colour

To change the colour of the plot background `panel.background()`.

To change the colour of the background around the plot use `plot.background()`.
```{r}
library(plotly)
library(ggplot2)

p <- ggplot(mpg, aes(displ, hwy)) + geom_point()+ 
  theme(
  plot.margin = margin(1, 1, 1, 1, "cm"),
  panel.background = element_rect(fill = "white"),
  plot.background = element_rect(
    fill = "grey90",
    colour = "black"
  )
)

ggplotly(p)
```


<!--------------------- EXAMPLE BREAK ------------------------->