arc {alphahull} | R Documentation |

## Add an arc to a plot

### Description

This function adds the arc of `B(c,r)`

between the angles that `A_\theta v`

and `A_{-\theta} v`

form with the axis *OX*, where `A_\theta v`

represents the clockwise rotation of angle `\theta`

of the vector `v`

.

### Usage

```
arc(c, r, v, theta, ...)
```

### Arguments

`c` |
Center |

`r` |
Radius |

`v` |
Vector |

`theta` |
Angle |

`...` |
Arguments to be passed to methods, such as graphical parameters (see |

### See Also

### Examples

```
## Not run:
# Plot of the circumference of radius 1
theta <- seq(0, 2*pi, length = 100)
r <- 1
plot(r*cos(theta), r*sin(theta), type = "l")
# Add in red the arc between pi/4 and 3*pi/4
arc(c(0,0), 1, c(0,1), pi/4, col = 2, lwd = 2)
## End(Not run)
```

[Package

*alphahull*version 2.5 Index]