如何绘制带有排序的水平误差条(带有错误标记的排序的条形图)的图表? [英] How to draw a chart with sorted horizontal error bars (sorted barcharts with error marks)?
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问题描述
我想将均值和标准误绘制为水平条形图,并且我希望对均值进行排序.
I would like to plot means and standard errors as a horizontal barchart, and I want the mean sorted.
我已经找到了使用晶格绘制水平排序的条形图的方法,但是我不知道如何添加错误标记.以下是我的数据和我想到的R代码.
I've found the way to plot horizontal sorted barcharts using lattice, but I do not know how to add error marks. The following are my data and the R code I came up with.
data <- structure(c(0.67, 0.67, 0.76, 0.66, 0.71, 0.6, 0.52, 0.6, 0.71, 0.76,
0.76, 0.71, 0.6, 0.61, 0.9, 0.5, 0.58, 0.84, 0.68, 0.88,
0.89, 0.96, 1, 0.95, 1, 1, 0.98, 0.78, 0.98, 1,
1, 0.99, 1, 1, 0.95, 0.92, 1, 0.91, 1, 0.87,
0.91, 0.72, 0.73, 0.55, 0.82, 0.87, 0.64, 0.75, 0.75, 1,
0.81, 0.79, 1, 0.74, 0.57, 0.84, 1, 0.95, 0.78, 0.95), .Dim = c(20L, 3L), .Dimnames = list(
c("1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11",
"12", "13", "14", "15", "16", "17", "18", "19", "20"), c("A",
"B", "C")))
means <- apply(data, 2, mean)
errors <- apply(data, 2, sd)
plot.data <- data.frame(colnames(data), means, errors)
colnames(plot.data) <- c("var", "mean", "error")
library("lattice")
plot.new()
barchart(reorder(var, mean) ~ mean, plot.data, xlim = c(0, 1))
有什么方法可以向该图表添加错误标记吗?如果没有,关于如何在R中绘制所需图表的任何建议?
Is there any way to add error marks to this chart? If not, any suggestion on how to plot the chart I want in R?
提前谢谢!
推荐答案
See R-Help: Adding error bars to lattice plots
prepanel.ci <- function(x, y, lx, ux, subscripts, ...) {
x <- as.numeric(x)
lx <- as.numeric(lx[subscripts])
ux <- as.numeric(ux[subscripts])
list(xlim = range(0, x, ux, lx, finite = TRUE))
}
panel.ci <- function(x, y, lx, ux, subscripts, ...) {
x <- as.numeric(x)
y <- as.numeric(y)
lx <- as.numeric(lx[subscripts])
ux <- as.numeric(ux[subscripts])
panel.barchart(x, y, ...)
panel.arrows(lx, y, ux, y, col = 'black',
length = 0.25, unit = "native",
angle = 90, code = 3)
}
p <- barchart(reorder(var, mean) ~ mean, data=plot.data,
lx=plot.data$mean-plot.data$error,
ux=plot.data$mean+plot.data$error,
panel=panel.ci,
prepanel=prepanel.ci)
print(p)
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