R: Draw error bars on an existing xy diagram

errorbars {oce} | R Documentation

## Draw error bars on an existing xy diagram

### Description

Draw error bars on an existing xy diagram

### Usage

    errorbars(x, y, xe, ye, percent = FALSE, style = 0, length = 0.025, ...)

### Arguments

`x, y` | coordinates of points on the existing plot.
`xe, ye` | errors on x and y coordinates of points on the existing plot, each either a single number or a vector of length identical to that of the corresponding coordinate.
`percent` | boolean flag indicating whether `xe` and `ye` are in terms of percent of the corresponding `x` and `y` values.
`style` | indication of the style of error bar. Using `style=0` yields simple line segments (drawn with `segments()`) and `style=1` yields line segments with short perpendicular endcaps.
`length` | length of endcaps, for `style=1` only; it is passed to `arrows()`, which is used to draw that style of error bars.
`...` | graphical parameters passed to the code that produces the error bars, e.g. to `segments()` for `style=0`.

### Author(s)

Dan Kelley

### Examples

    library(oce)
    data(ctd)
    S <- ctd[["salinity"]]
    T <- ctd[["temperature"]]
    plot(S, T)
    errorbars(S, T, 0.05, 0.5)

[Package oce version 1.2-0 Index]