cylindersegment | R Documentation |

adds a segment of a cylinder to a plot

```
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, ...)
```

`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. |

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.

Karline Soetaert <karline.soetaert@nioz.nl>

`filledcylinder`

```
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)
```

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