# segments

##### Add Line Segments to a Plot

Draw line segments between pairs of points.

- Keywords
- aplot

##### Usage

```
segments(x0, y0, x1 = x0, y1 = y0,
col = par("fg"), lty = par("lty"), lwd = par("lwd"),
…)
```

##### Arguments

- x0, y0
coordinates of points

**from**which to draw.- x1, y1
coordinates of points

**to**which to draw. At least one must be supplied.- col, lty, lwd
graphical parameters as in

`par`

, possibly vectors.`NA`

values in`col`

cause the segment to be omitted.- …
further graphical parameters (from

`par`

), such as`xpd`

and the line characteristics`lend`

,`ljoin`

and`lmitre`

.

##### Details

For each `i`

, a line segment is drawn between the point
`(x0[i], y0[i])`

and the point `(x1[i], y1[i])`

. The
coordinate vectors will be recycled to the length of the longest.

The graphical parameters `col`

, `lty`

and `lwd`

can be
vectors of length greater than one and will be recycled if necessary.

##### References

Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988)
*The New S Language*.
Wadsworth & Brooks/Cole.

##### See Also

`arrows`

,
`polygon`

for slightly easier and less flexible line
drawing, and
`lines`

for the usual polygons.

##### Examples

`library(graphics)`

```
# NOT RUN {
x <- stats::runif(12); y <- stats::rnorm(12)
i <- order(x, y); x <- x[i]; y <- y[i]
plot(x, y, main = "arrows(.) and segments(.)")
## draw arrows from point to point :
s <- seq(length(x)-1) # one shorter than data
arrows(x[s], y[s], x[s+1], y[s+1], col= 1:3)
s <- s[-length(s)]
segments(x[s], y[s], x[s+2], y[s+2], col= 'pink')
# }
```

*Documentation reproduced from package graphics, version 3.4.3, License: Part of R 3.4.3*