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

## Description

adds a segment of a cylinder to a plot

## Usage

 ```1 2 3``` ```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

 ``` 1 2 3 4 5 6 7 8 9 10 11 12 13 14``` ```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) ```

### Example output

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