# plotcircle: adds part of a colored circle to a plot In shape: Functions for Plotting Graphical Shapes, Colors

## Description

adds (part of) a colored circle to a plot; an arrow can be drawn at a specified position

## Usage

 `1` ```plotcircle(r = 1, ...) ```

## Arguments

 `r ` radius of circle. `... ` arguments passed to function plotellipse.

## Details

`plotcircle` calls `plotellipse`, making sure that the figure drawn effectively looks like a circle. For graphs that have both axes of equal size, the circle will be equal to the ellipse with equal rx and ry. See second example

see `plotellipse` for details

## Author(s)

Karline Soetaert <karline.soetaert@nioz.nl>

`plotellipse` to draw ellipses

## Examples

 ``` 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15``` ```# symmetrical axes emptyplot(c(0, 1)) plotcircle(mid = c(0.5, 0.5), r = 0.25, from = 0, to = 3*pi/2, arrow = TRUE, arr.pos = 0.5, col = "red") # symmetrical plotellipse(mid = c(0.5, 0.5), rx = 0.2, ry = 0.2, arrow = TRUE, arr.pos = 0.5, col = "blue") #non-symmetrical axes emptyplot(c(0, 1), c(0, 2), main = "plotcircle", asp = FALSE) plotcircle(mid = c(0.5, 0.5), r = 0.25, from = 0, to = 3*pi/2, arrow = TRUE, arr.pos = 0.5, col = "red") plotellipse(mid = c(0.5, 0.5), rx = 0.25, ry = 0.25, arrow = TRUE, arr.pos = 0.5, col = "blue") ```

### Example output

```
```

shape documentation built on May 19, 2021, 9:09 a.m.