带有ggplot2的ACF图:设置geom_bar的宽度 [英] ACF Plot with ggplot2: Setting width of geom_bar

问题描述

使用acf，我们可以在基础R图中创建ACF plot.

With acf we can make ACF plot in base R graph.

x <- lh
acf(x)

以下代码可用于获取ggplot2中的ACF plot.

The following code can be used to get the ACF plot in ggplot2.

conf.level <- 0.95
ciline <- qnorm((1 - conf.level)/2)/sqrt(length(x))
bacf <- acf(x, plot = FALSE)
bacfdf <- with(bacf, data.frame(lag, acf))

library(ggplot2)
q <- ggplot(data=bacfdf, mapping=aes(x=lag, y=acf)) +
       geom_bar(stat = "identity", position = "identity")
q

问题

如何获取线条而不是线条，或者如何设置线条的宽度以使其看起来像线条?谢谢

How to get lines rather than bars or how to set the width of bars so that they look like lines? Thanks

推荐答案

最好通过geom_segment()

library(ggplot2)

set.seed(123)
x <- arima.sim(n = 200, model = list(ar = 0.6))

bacf <- acf(x, plot = FALSE)
bacfdf <- with(bacf, data.frame(lag, acf))

q <- ggplot(data = bacfdf, mapping = aes(x = lag, y = acf)) +
       geom_hline(aes(yintercept = 0)) +
       geom_segment(mapping = aes(xend = lag, yend = 0))
q

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