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我已经为此苦苦挣扎了几天，但找不到一段代码可以提供帮助。我有一个在 ggplot2 中刻面的多变量条形图，我终于解决了它，所以它看起来很棒并且传达了我想要显示的数据。不幸的是，当我将误差线添加到图形时，它们都是无序的并且在整个条形图中浮动。（我存在的祸根的条形图示例）

数据：（谢谢，我忘了 dput）

 > dput(plant_ag)

    structure(list(worms = structure(c(1L, 2L, 1L, 2L, 1L, 2L, 1L, 
     2L, 1L, 2L, 1L, 2L), .Label = c("No", "Yes"), class = "factor"), 
    poll_level = structure(c(1L, 1L, 2L, 2L, 3L, 3L, 1L, 1L, 
    2L, 2L, 3L, 3L), .Label = c("Low", "Medium", "Very"), class = "factor"), 
    variable = structure(c(7L, 7L, 7L, 7L, 7L, 7L, 10L, 10L, 
    10L, 10L, 10L, 10L), .Label = c("biomass", "cu_seed", "pb_seed", 
    "zn_seed", "cu_buck", "pb_buck", "zn_buck", "cu_rye", "pb_rye", 
    "zn_rye"), class = "factor"), x.mean = c(0.9945992584, 4.645085363, 
    198.390869802, 58.43054462, 3795.1789451, 2883.8860731, 942.59827934, 
    1313.1415081, 707.165653286, 1529.33515045, 3811.442312, 
    6149.4490085), x.sd = c(3.14519901565836, 14.68904967299, 
    176.524518210961, 61.362498383762, 554.023490328341, 541.012498962109, 
    224.078432824798, 221.039876468939, 468.567696912978, 1021.25312103485, 
    2431.58456925777, 3004.85636935088), x.n = c(10, 10, 10, 
    10, 10, 10, 10, 10, 10, 10, 10, 10), se = c(0.9945992584, 
    4.645085363, 55.8219540410509, 19.4045257811089, 175.197610667382, 
    171.083173933975, 70.8598222247401, 69.8989463364104, 148.174116022446, 
    322.948593002573, 768.934556217399, 950.219016881294), 
    names = c("No EW/ Low Soil", 
    "Yes EW/ Low Soil", "No EW/ Medium Soil", "Yes EW/ Medium Soil", 
    "No EW/ Very Soil", "Yes EW/ Very Soil", "No EW/ Low Soil", 
    "Yes EW/ Low Soil", "No EW/ Medium Soil", "Yes EW/ Medium Soil", 
    "No EW/ Very Soil", "Yes EW/ Very Soil"), 
     ymin = c(0, 8.88178419700125e16, 
    142.568915760949, 39.0260188388911, 3619.98133443262, 2712.80289916603, 
    871.73845711526, 1243.24256176359, 558.991537263554, 1206.38655744743, 
    3042.5077557826, 5199.22999161871), ymax = c(1.9891985168, 
    9.290170726, 254.212823843051, 77.8350704011089, 3970.37655576738, 
    3054.96924703397, 1013.45810156474, 1383.04045443641, 855.339769308446, 
    1852.28374345257, 4580.3768682174, 7099.66802538129)), 
 .Names =   c("worms", 
"poll_level", "variable", "x.mean", "x.sd", "x.n", "se", "names", 
"ymin", "ymax"), row.names = c(NA, -12L), class = "data.frame")
>

编码：

########### 图表从这里开始 
library(ggplot2)

p <- ggplot(data = plant_ag, aes(x = factor(worms), fill = factor(variable), y = x.mean,
                                 group=variable))
p <- p + geom_bar(colour="black",stat = "identity",position = position_dodge(.95))
p <- p + facet_grid(. ~ poll_level)
p <- p + geom_errorbar(aes(ymin=plant_ag$ymin, ymax=plant_ag$ymax), width=0.2,  stat="identity", 
                       position = position_dodge(1))
          +  facet_wrap(worms ~poll_level, ncol=4) 
p <- p + theme_bw () + theme(legend.position = c(0.15, 0.8)) + 
  ggtitle("Zinc in Plants by Soil Pollution Level") +ylab("Zn concentration in plants, ppm") + 
  xlab("Earthworm Community Present")
p <- p + scale_fill_manual(values=c('darkgray','lightblue'), 
                           name="Experimental\nPlant",
                           labels=c("Buckwheat", "Rye")) 
p
######### 命令结束

非常非常欢迎任何帮助（或同情）！感谢你们所做的一切，这对我们所有的 N00B 来说都是一个难以置信的帮助。

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1 回答 1

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更改为aes(ymin=ymin, ymax=ymax)ingeom_errorbar解决了错误栏的排序问题。您已ggplot在对函数的初始调用中将数据框传递给，ggplot无需再次引用它。aes使用in内部的数据框名称geom_errorbar会覆盖由 设置的沿 x 轴的排序ggplot，以便根据它们在数据框中的顺序而不是图中的类别排序来绘制误差线。

此外，您的代码同时具有facet_wrapand facet_grid，但您只能使用其中一个。以下是更新的情节代码，已facet_wrap注释掉。我还设置了 y 比例，因为您的数据对于弄乱绘图的误差条具有巨大的价值。

下面的代码还显示了如何使用+将绘图组件链接在一起。

p <- ggplot(data = plant_ag, aes(x = factor(worms), fill = factor(variable), 
                                 y = x.mean, group=variable)) + 
  geom_bar(colour="black", stat="identity", position=position_dodge(.95)) + 
  facet_grid(. ~ poll_level) + 
  geom_errorbar(aes(ymin=ymin, ymax=ymax), width=0.2, stat="identity",
                position = position_dodge(1)) +  
  scale_y_continuous(limits=c(0,8000)) +
#  facet_wrap(worms ~ poll_level, ncol=4) + 
  theme_bw() + theme(legend.position = c(0.15, 0.8)) + 
  ggtitle("Zinc in Plants by Soil Pollution Level") +
  labs(y="Zn concentration in plants, ppm",
       x="Earthworm Community Present") + 
  scale_fill_manual(values=c('darkgray','lightblue'), 
                    name="Experimental\nPlant",
                    labels=c("Buckwheat", "Rye"))

在此处输入图像描述

于 2016-03-03T17:34:14.330 回答