DrawArc {DescTools} | R Documentation |

## Draw Elliptic Arc(s)

### Description

Draw one or more elliptic (or circular) arcs from `theta.1`

to `theta.2`

on an existing plot using classic graphics.

### Usage

```
DrawArc(x = 0, y = x, rx = 1, ry = rx,
theta.1 = 0, theta.2 = 2*pi, nv = 100,
col = par("col"), lty = par("lty"), lwd = par("lwd"),
plot = TRUE)
```

### Arguments

`x` , `y` |
a vector (or scalar) of xy-coordinates of the center(s) of the arc(s). |

`rx` |
a scalar or a vector giving the semi-major axis of the ellipse for the arc(s) |

`ry` |
a scalar or a vector giving the semi-minor axis of the ellipse for the arc(s). Default is radius.x which will result in a circle arc with radius.x. |

`theta.1` |
a scalar or a vector of starting angles in radians. |

`theta.2` |
a scalar or a vector of ending angles in radians. |

`nv` |
number of vertices used to plot the arc. Scalar or vector. |

`col` |
color for the arc(s). Scalar or vector. |

`lty` |
line type used for drawing. |

`lwd` |
line width used for drawing. |

`plot` |
logical. If |

### Details

All parameters are recycled if necessary.

Be sure to use an aspect ratio of 1 as shown in the example to avoid distortion.

### Value

`DrawArc`

invisibly returns a list of the calculated coordinates for all shapes.

### Author(s)

Andri Signorell <andri@signorell.net>

### See Also

### Examples

```
curve(sin(x), 0, pi, col="blue", asp=1)
DrawArc(x = pi/2, y = 0, rx = 1, theta.1 = pi/4, theta.2 = 3*pi/4, col="red")
```

*DescTools*version 0.99.55 Index]