pointsCircle {ecolitk} | R Documentation

## Functions to plot circular related figures

### Description

Functions to plot circular related figures

### Usage

    linesCircle(radius, center.x = 0, center.y = 0, edges = 300, ...)
    polygonDisk(radius, center.x = 0, center.y = 0, edges=300,
    ...)
    arrowsArc(theta0, theta1, radius, center.x = 0, center.y = 0, edges = 10,
              length = 0.25, angle = 30, code = 2, ...)
    pointsArc(theta0, theta1, radius, center.x = 0, center.y = 0, ...)
    linesArc(theta0, theta1, radius, center.x = 0, center.y = 0, ...)
    polygonArc(theta0, theta1, radius.in, radius.out,
               center.x = 0, center.y = 0,
               edges = 10,
               col = "black",
               border = NA,
               ...)

### Arguments

`theta0, theta1` | start and end angles for the arc
`radius` | radius of the circle
`radius.in` | inner radius
`radius.out` | outer radius
`center.x, center.y` | Coordinates for the center of the circle (default to (0, 0))
`edges` | number of edges the shape is made of
`col` |
`border` | border (see `polygon`)
`length, angle, code` | see the corresponding parameters for the function `arrows`
`...` | optional graphical paramaters

### Details

Details to come... for now the best to run the examples and experiment by yourself...

### Value

Function only used for their border effects.

### Author(s)

laurent

### Examples

    par(mfrow=c(2,2))
    n <- 10
    thetas <- rev(seq(0, 2 * pi, length=n))

    rhos <- rev(seq(1, n) / n)

    xy <- polar2xy(rhos, thetas)
    colo <- heat.colors(n)

    plot(0, 0, xlim=c(-2, 2), ylim=c(-2, 2), type="n")
    for (i in 1:n)
      linesCircle(rhos[i]/2, xy$x[i], xy$y[i])

    plot(0, 0, xlim=c(-2, 2), ylim=c(-2, 2), type="n")
    for (i in 1:n)
      polygonDisk(rhos[i]/2, xy$x[i], xy$y[i], col=colo[i])

    plot(0, 0, xlim=c(-2, 2), ylim=c(-2, 2), type="n", xlab="", ylab="")
    for (i in 1:n)
      polygonArc(0, thetas[i],
                 rhos[i]/2, rhos[i],
                 center.x = xy$x[i], center.y = xy$y[i], col=colo[i])

    plot(0, 0, xlim=c(-2, 2), ylim=c(-2, 2), type="n", xlab="", ylab="")
    for (i in (1:n)[-1]) {
      linesCircle(rhos[i-1], col="gray", lty=2)
      polygonArc(thetas[i-1], thetas[i],
                 rhos[i-1], rhos[i], col=colo[i],
                 edges=20)
      arrowsArc(thetas[i-1], thetas[i],
                 rhos[i] + 1, col=colo[i],
                 edges=20)
    }

[Package ecolitk version 1.8.0 Index]