Plot Error Bars
Draws symmetric error bars in x- and/or y-direction.
errorbar(x, y, xerr = NULL, yerr = NULL,
bar.col = "red", bar.len = 0.01,
grid = TRUE, with = TRUE, add = FALSE, ...)x, y |
x-, y-coordinates |
xerr, yerr |
length of the error bars, relative to the x-, y-values. |
bar.col |
color of the error bars; default: red |
bar.len |
length of the cross bars orthogonal to the error bars; default: 0.01. |
grid |
logical; should the grid be plotted?; default: true |
with |
logical; whether to end the error bars with small cross bars. |
add |
logical; should the error bars be added to an existing plot?; default: false. |
... |
additional plotting parameters that will be passed to the
|
errorbar plots y versus x with symmetric error bars,
with a length determined by xerr resp. yerr in x- and/or
y-direction. If xerr or yerr is NULL error bars in
this direction will not be drawn.
A future version will allow to draw unsymmetric error bars by specifying
upper and lower limits when xerr or yerr is a matrix of
size (2 x length(x)).
Generates a plot, no return value.
plotrix::plotCI, Hmisc::errbar
## Not run: x <- seq(0, 2*pi, length.out = 20) y <- sin(x) xe <- 0.1 ye <- 0.1 * y errorbar(x, y, xe, ye, type = "l", with = FALSE) cnt <- round(100*randn(20, 3)) y <- apply(cnt, 1, mean) e <- apply(cnt, 1, sd) errorbar(1:20, y, yerr = e, bar.col = "blue") ## End(Not run)
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