在ggplot2中绘制摘要统计信息 [英] Plotting summary statistics in ggplot2

问题描述

有没有一种方法可以在没有原始数据的情况下在ggplot2中绘制摘要统计信息?假设我有三个数据点:第一个数据具有平均值34.2和标准误3.4，第二个数据具有平均值28.6和标准误0.5，第三个数据具有平均值44.0和标准误2.2.我将如何绘制?

Is there a way to plot summary statistics in ggplot2 without the raw data? Say I have three data points: the first has mean 34.2 and standard error 3.4, the second has mean 28.6 and standard error 0.5, and the third has mean 44.0 and standard error 2.2. How would I plot this?

推荐答案

也许有更有效的方法，但是您可以尝试将这些数字放入数据框中并从中进行绘制.因此，您将在以下三列中看到观测值1-3，以及它们的相应平均值和标准误差:

There may be more efficient ways, but you could try putting those numbers into a data frame and plotting from that. So you'd have observations 1 - 3, and their corresponding means and standard errors in three columns as follows:

    obs <- c(1,2,3)
    mean <- c(34.2, 28.6, 44.0)
    se <- c(3.4, 0.5, 2.2)
    df = data.frame(obs, mean, se)

    ggplot(df, aes(y=mean, x=obs)) + 
       geom_bar(position="dodge", stat="identity") + 
       geom_errorbar(aes(ymax = mean+se, ymin = mean-se))

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