# cylindersegment: adds part of a cylinder to a plot In shape: Functions for Plotting Graphical Shapes, Colors

 cylindersegment R Documentation

## adds part of a cylinder to a plot

### Description

adds a segment of a cylinder to a plot

### Usage

``````cylindersegment(rx = 1, ry = rx, from = pi, to = 3*pi/2, len = 1,
mid = c(0,0), angle = 0, dr = 0.01, col = "black",
delt = 1.0, ...)
``````

### Arguments

 `rx` horizontal radius of full cylinder. `ry` vertical radius of full cylinder. `from` start radius of segment, radians. `to` end radius of segment, radians. `len` cylinder length. `mid` midpoint of cylinder. `angle` rotation angle, degrees. `dr` size of segments, in radians, to draw top/bottom ellipse (decrease for smoother). `col` color of slice. `delt` increase factor, from left to right. `...` arguments passed to polygon function.

### Details

When `angle` = 0 (the default), the cylindersegment is parallel to the x-axis.

`rx` and `ry` are the horizontal and vertical radiusses of the bordering ellipses. Here "horizontal" and "vertical" denote the position BEFORE rotation

if `delt` > 1, the width of the cylinder will increase from left to right.

### Author(s)

Karline Soetaert <karline.soetaert@nioz.nl>

`filledcylinder`

### Examples

``````emptyplot(main = "cylindersegment")
cylindersegment(mid = c(0.1, 0.5), rx = 0.1, ry = 0.1,
from = pi, to = 3*pi/2, col = "blue",
len = 0.5, delt = 1.1, lwd = 2, angle = 90)
cylindersegment(mid = c(0.8, 0.5), rx = 0.1, ry = 0.1,
from = 0, to = pi/2, col = "red", len = 0.5,
delt = 1.0, lwd = 2, angle = 45)
cylindersegment(mid = c(0.5, 0.5), rx = 0.1, ry = 0.1,
from = pi/2, to = pi, col = "lightblue",
len = 0.2, delt = 1.5, lwd = 2)
for (i in seq(0.1, 0.9, 0.1))
cylindersegment(mid = c(i, 0.9), rx = 0.035, ry = 0.05,
from = pi/2, to = 3*pi/2, col = "darkblue",
len = 0.1, angle = 90)
``````

shape documentation built on May 29, 2024, 5:07 a.m.