使用ggplot2在barplot中放置错误条 [英] Placement of error bars in barplot using ggplot2

问题描述

您好，我在RStudio中使用ggplot版本0.9.3.2，我正在尝试使用错误栏制作条形图。问题是错误栏位置错误。我需要他们去个别酒吧。

我有这样的数据框

 浓度变量值sd 
 1 0 AF_B 0.3567126 0.010391001 
 2 0.5x AF_B 0.3355766 0.003480245 
 3 1x AF_B 0.3001138 0.009104821 
 4 5x AF_B 0.2658911 0.016312390 
 5 10x AF_B 0.2115522 0.011056590 
 6 100x AF_B 0.2655958 0.015092367 
 7 0 D_B 0.3567126 0.010391001 
 8 0.5x D_B 0.3453078 0.011639252 
 9 1x D_B 0.3380180 0.004357810 
 10 5x D_B 0.3349004 0.018119644 
 11 10x D_B 0.3186451 0.014515436 
 12 100x D_B 0.3174700 0.016685932 
  

我有以下代码：
$ b $ pre $ dodge = position_dodge（width = 0.9）
c = ggplot（data = dm，aes （y =值，x =浓度））
c + geom_bar（position = dodge，
stat =identity，
aes（fill = variable，color = variable，group = variable，color =black））+
geom_errorbar（ aes（ymin = value-sd，ymax = value + sd），
position = dodge，
width = 0.1，
size = 0.3）+
ylab（mu_max [h -1）]）+
scale_x_discrete（limits = c（0，0.5x，1x，5x，10x，100x））


，并且给我这个图，这很明显是

http://i.imgur.com/1zwbxMv.png

解决方案

您应该在 ggplot（）调用中移动参数 fill = variable ，以确保 geom_errorbar（）也使用变量作为躲避变量。

  ggplot（data = dm，aes（y = value，x = concentration，fill = variable））+ 
 geom_bar（position = position_dodge（），
 stat =identity）+ 
 geom_errorbar（ae s（ymin = value-sd，ymax = value + sd），
 position = dodge，width = 0.1，size = 0.3）+ 
 ylab（mu_max [h-1]）+ 
 scale_x_discrete（limits = c（0，0.5x，1x，5x，10x，100x））
  

Hi i am using ggplot version 0.9.3.2 in RStudio and I am trying to make a bar plot with error bars. The problem is that the error bars are positioned wrong. I need them to go on top of the individual bars.

I have a data frame like this

   concentration variable     value          sd
1              0     AF_B 0.3567126 0.010391001
2           0.5x     AF_B 0.3355766 0.003480245
3             1x     AF_B 0.3001138 0.009104821
4             5x     AF_B 0.2658911 0.016312390
5            10x     AF_B 0.2115522 0.011056590
6           100x     AF_B 0.2655958 0.015092367
7              0      D_B 0.3567126 0.010391001
8           0.5x      D_B 0.3453078 0.011639252
9             1x      D_B 0.3380180 0.004357810
10            5x      D_B 0.3349004 0.018119644
11           10x      D_B 0.3186451 0.014515436
12          100x      D_B 0.3174700 0.016685932

I have the following code

    dodge = position_dodge(width=0.9)
    c = ggplot(data=dm, aes(y=value,x=concentration))
    c + geom_bar(position = dodge, 
         stat="identity",
         aes(fill=variable,colour=variable,group=variable, colour="black")) +
    geom_errorbar(aes(ymin=value-sd,ymax=value+sd),
          position=dodge,
          width=0.1,
          size=0.3) +
    ylab("mu_max [h-1]") +
    scale_x_discrete(limits=c("0","0.5x","1x","5x","10x","100x"))

, and gives me this plot, which is clearly

http://i.imgur.com/1zwbxMv.png

解决方案

You should move the argument fill=variable inside the ggplot() call to ensure that geom_errorbar() also use variable as the dodging variable.

ggplot(data=dm,aes(y=value,x=concentration,fill=variable))+
  geom_bar(position = position_dodge(), 
           stat="identity") +
  geom_errorbar(aes(ymin=value-sd,ymax=value+sd),
                position=dodge,width=0.1,size=0.3)+
  ylab("mu_max [h-1]") +
  scale_x_discrete(limits=c("0","0.5x","1x","5x","10x","100x"))

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