xyVector | R Documentation |

`xyVector`

ObjectCreate an object to represent a set of x-y pairs. The resulting
object can be treated as a matrix or as a data frame or as a vector.
When treated as a vector it reduces to the `y`

component only.

The result of functions such as `predict.spline`

is returned as
an `xyVector`

object so the x-values used to generate the
y-positions are retained, say for purposes of generating plots.

xyVector(x, y)

`x` |
a numeric vector |

`y` |
a numeric vector of the same length as |

An object of class `xyVector`

with components

`x` |
a numeric vector |

`y` |
a numeric vector of the same length as |

Douglas Bates and Bill Venables

require(stats); require(graphics) ispl <- interpSpline( weight ~ height, women ) weights <- predict( ispl, seq( 55, 75, length.out = 51 )) class( weights ) plot( weights, type = "l", xlab = "height", ylab = "weight" ) points( women$height, women$weight ) weights

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