grid.segments {grid} | R Documentation |

## Draw Line Segments

### Description

These functions create and draw line segments.

### Usage

grid.segments(x0 = unit(0, "npc"), y0 = unit(0, "npc"),
x1 = unit(1, "npc"), y1 = unit(1, "npc"),
default.units = "npc", units.per.obs = FALSE,
name = NULL, gp = gpar(), draw = TRUE, vp = NULL)
segmentsGrob(x0 = unit(0, "npc"), y0 = unit(0, "npc"),
x1 = unit(1, "npc"), y1 = unit(1, "npc"),
default.units = "npc", units.per.obs = FALSE,
name = NULL, gp = gpar(), vp = NULL)

### Arguments

`x0` |
Numeric indicating the starting x-values of the line segments. |

`y0` |
Numeric indicating the starting y-values of the line
segments. |

`x1` |
Numeric indicating the stopping x-values of the line
segments. |

`y1` |
Numeric indicating the stopping y-values of the line segments. |

`default.units` |
A string. |

`units.per.obs` |
A boolean indicating whether distinct units are
given for each x/y-value. |

`name` |
A character identifier. |

`gp` |
An object of class `gpar` . |

`draw` |
A logical value indicating whether graphics output
should be produced. |

`vp` |
A Grid viewport object (or NULL) |

### Details

Both functions create a segments grob (a graphical object describing
segments), but only `grid.segments`

draws the segments (and then only if `draw`

is `TRUE`

).

### Value

A segments grob. `grid.segments`

returns the value invisibly.

### Author(s)

Paul Murrell

### See Also

Grid,
`viewport`

[Package

*grid* version 2.1.0

Index]