# How to Place Legend Outside of The Plot in Matplotlib

Legend could be placed outside of the plot in the Matplotlib by using `bbox_to_anchor`

. `bbox`

means `bounding box`

that accommodates the legend.

```
plt.legend(bbox_to_anchor=(1.05, 1))
```

It places the legend at position `(1.05, 1)`

in the axes coordinate. `(0, 0)`

is the lower-left corner, and `(1.0, 1.0)`

is the upper right corner of the axes coordinate.

The actual size and position of the legend bounding box are defined with the 4-tuple parameter of `bbox_to_anchor`

and `loc`

in the `plt.legend`

.

```
plt.legend(bbox_to_anchor=(x0, y0, width, height), loc=)
```

`width`

and `height`

are the width and the height of the legend box, and `(x0, y0)`

is the coordinate of the `loc`

of the bounding box.

The value of `loc`

could be number or string that has the relationship as below,

Loc Number | Loc String |
---|---|

0 | `best` |

1 | `upper right` |

2 | `upper left` |

3 | `lower left` |

4 | `lower right` |

5 | `right` |

6 | `center left` |

7 | `center right` |

8 | `lower center` |

9 | `upper center` |

10 | `center` |

```
plt.legend(bbox_to_anchor=(1.05, 1.0, 0.3, 0.2), loc='upper left')
```

The above code means the legend box is positioned at the axes coordinate `(1.05, 1.0)`

that has the width of `0.3`

and the height of `0.2`

, where `(1.05, 1.0)`

is the coordinate of the upper left corner of the legend bounding box.

`bbox_to_anchor`

Example

```
import matplotlib.pyplot as plt
import numpy as np
x = np.linspace(0, 10, 100)
plt.plot(x, np.sin(x), label="sin(x)")
plt.plot(x, np.cos(x), label="cos(x)")
plt.legend(bbox_to_anchor=(1.05, 1.0), loc='upper left')
plt.tight_layout()
plt.show()
```

`plt.tight_layout()`

makes subplots nicely fit in the figure.

The legend box would be cropped if `tight_layout()`

is not called.

`bbox_extra_artists`

and `bbox_inches`

to prevent legend box from being cropped

```
import matplotlib.pyplot as plt
import numpy as np
x = np.linspace(0, 10, 100)
plt.plot(x, np.sin(x), label="sin(x)")
plt.plot(x, np.cos(x), label="cos(x)")
lg = plt.legend(bbox_to_anchor=(1.05, 1.0), loc='upper left')
plt.savefig('example.png',
dpi=300,
format='png',
bbox_extra_artists=(lg,),
bbox_inches='tight')
```

`bbox_extra_artists`

specifies the list of `Artist`

that will be taken into consideration when it calculates the tight bbox.

If the `bbox_inches`

is set to be `tight`

, it will figure out the tight bbox of the figure.