在ggplot中绘制置信区间

Question

我想使用ggplot执行以下绘图：

这是我的df结构的一个例子（有点，不按比例绘制数据）：

example.df = data.frame(mean = c(0.3,0.8,0.4,0.65,0.28,0.91,0.35,0.61,0.32,0.94,0.1,0.9,0.13,0.85,0.7,1.3), 
                            std.dev = c(0.01,0.03,0.023,0.031,0.01,0.012,0.015,0.021,0.21,0.13,0.023,0.051,0.07,0.012,0.025,0.058),
                            class = c("1","2","1","2","1","2","1","2","1","2","1","2","1","2","1","2"),
                            group = c("group1","group2","group1","group2","group1","group2","group1","group2","group1","group2","group1","group2","group1","group2","group1","group2"))

该数据框由16个重复组成，每个重复具有给定的平均值和给定的标准偏差。

对于每个复制，我想绘制置信区间，其中我的图例中的大点是平均估计值，条形的长度是标准偏差的两倍。

此外，我想在同一行中绘制两个不同的重复，但颜色不同，按类着色，红色为1级，蓝色为2级。

最后，我想把整个情节分成两个不同组的两个面板（在同一行）。

我试过调查这个网站，http://www.cookbook-r.com/Graphs/Plotting_means_and_error_bars_(ggplot2)/但是无法弄清楚如何为这个结构的任何数据框自动化这个，X组的数量（在这种情况下为2），每组重复K次（在这种情况下，8级，4级，4级，4级）。

使用ggplot或标准r pkg库有没有好方法呢？

Answer 1

我认为您提供的示例数据框架不是以适当的方式构建的，因为group1中的所有值都有class 1，而group2中的所有值都是类{ {1}}。所以我创建了新的数据框，还添加了名为2的新列，其中显示了每个replicate中的重复次数（四次重复（包含两个class值））。

group

现在，您可以使用example.df = data.frame(mean = c(0.3,0.8,0.4,0.65,0.28,0.91,0.35,0.61,0.32,0.94,0.1, 0.9,0.13,0.85,0.7,1.3), std.dev = c(0.01,0.03,0.023,0.031,0.01,0.012,0.015,0.021,0.21, 0.13,0.023,0.051,0.07,0.012,0.025,0.058), class = c("1","2","1","2","1","2","1","2","1","2","1", "2","1","2","1","2"), group = rep(c("group1","group2"),each=8), replicate=rep(rep(1:4,each=2),time=2)) 获取置信区间点数和geom_pointrange()来为每个组制作情节。

facet_wrap()