errorbars: 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.