为多个组生成不同颜色的ggplot2 boxplot [英] Generate ggplot2 boxplot with different colours for multiple groups

问题描述

我对R和ggplot相当陌生。

我试图生成一个由两个变量排序的boxplot。在我的案例物种和实验。
我到目前为止使用的是

  ggplot（DF，aes（Species，Protein，fill = Experiment，dodge =实验））+ 
 stat_boxplot（geom ='errorbar'）+ 
 geom_boxplot（）
  

是我的物种的箱型图，每个物种有2个条，每个实验都有一个条。我的问题是现在，是否可以改变这个颜色我可以说每种物种都有不同的颜色，并且可以说，这些实验的颜色的阴影不同吗？可以说，第一种物种比黑暗和光明蓝色的酒吧，第二个黑暗和浅绿色的酒吧，等等。

数据的形式是一个csv文件，看起来像这样：

 实验，物种，蛋白质
 Spring，D_strigosa，5.107767364 
 Spring，D_strigosa，8.288980741 
 Spring，D_strigosa，7.537376567 
 Spring，D_strigosa，4.811744241 
 Spring，D_strigosa，9.559043454 
 Spring，M_cavernosa，13.66759289 
 Spring ，M_cavernosa，23.54880195 
 Spring，M_cavernosa，11.00790037 
 Spring，M_cavernosa，13.70597973 
 Spring，M_cavernosa，12.26970906 
 Spring，M_faveolata，9.559043454 
 Spring，M_faveolata，4.135860474 
 Spring，M_faveolata，4.557306615 
 Spring，M_faveolata，7.621872315 
 Spring，M_faveolata，6.016859956 
 Spring，M_annularis，6.294920733 
 Spring，M_annularis，5.163371831 
 Spring， M_annularis，2.177243143 
 Spring，M_annularis，3.55966551 
 Autumn，D_strigosa，3.709978392 
 Autumn，D_strigosa，7.192777836 
 Autumn，D_strigosa，5.31544441 
 Autumn，D_strigosa，6.578602058 
 Autumn，D_strigosa，5.610085559 
 Autumn，M_cavernosa，11.64182554 
 Autumn，M_cavernosa，10.44968102 
 Autumn，M_cavernosa，9.377389318 
 Autumn，M_cavernosa，10.99346107 
 Autumn，M_cavernosa ，11.5676896 
秋天，M_faveolata，4.638054165 
秋天，M_faveolata，7.191664953 
秋天，M_faveolata，6.981827102 
秋天，M_faveolata，6.386452477 
 Autumn，M_annularis，4.709770404 
秋天，M_annularis，3.554071459 
 Autumn，M_annularis，4.596686351 
 Autumn，M_annularis，3.530585628 
  

解决方案

您应该为 fill = 使用 interaction（） 种类和实验在 interaction（）内。然后使用 scale_fill_manual（），您可以为您需要的颜色设置 values = -plots）。颜色顺序首先是 Species 在 Autumn 中的颜色，然后是 Species 在 Spring 中。

  ggplot（DF，aes（Species，Protein，fill = interaction（Species，Experiment），dodge = Experiment））+ 
 stat_boxplot（geom ='errorbar'）+ 
 geom_boxplot（）+ 
 scale_fill_manual（values = c（blue，green，red，cyan，
 +darkblue，darkgreen，darkred，darkcyan））
  

I'm fairly new to R and ggplot.

I'm trying to generate a boxplot sorted by two variables. In my case Species and Experiment. What I got so far by using

ggplot(DF, aes(Species, Protein, fill=Experiment, dodge=Experiment)) +
    stat_boxplot(geom ='errorbar')+
    geom_boxplot()

are boxplots of my species and each species has 2 bars, one for each experiment.

My question is now, is it possible to change the colours in this way, that I have different colours per species and lets say, different shading of those colours for the experiments?

Lets say, the first species would than have a dark and light blue bar, the second a dark and light green bar, etc.

The data is in the form of a csv file and looks like this:

Experiment,Species,Protein
Spring,D_strigosa,5.107767364
Spring,D_strigosa,8.288980741
Spring,D_strigosa,7.537376567
Spring,D_strigosa,4.811744241
Spring,D_strigosa,9.559043454
Spring,M_cavernosa,13.66759289
Spring,M_cavernosa,23.54880195
Spring,M_cavernosa,11.00790037
Spring,M_cavernosa,13.70597973
Spring,M_cavernosa,12.26970906
Spring,M_faveolata,9.559043454
Spring,M_faveolata,4.135860474
Spring,M_faveolata,4.557306615
Spring,M_faveolata,7.621872315
Spring,M_faveolata,6.016859956
Spring,M_annularis,6.294920733
Spring,M_annularis,5.163371831
Spring,M_annularis,2.177243143
Spring,M_annularis,3.55966551
Autumn,D_strigosa,3.709978392
Autumn,D_strigosa,7.192777836
Autumn,D_strigosa,5.31544441
Autumn,D_strigosa,6.578602058
Autumn,D_strigosa,5.610085559
Autumn,M_cavernosa,11.64182554
Autumn,M_cavernosa,10.44968102
Autumn,M_cavernosa,9.377389318
Autumn,M_cavernosa,10.99346107
Autumn,M_cavernosa,11.5676896
Autumn,M_faveolata,4.638054165
Autumn,M_faveolata,7.191664953
Autumn,M_faveolata,6.981827102
Autumn,M_faveolata,6.386452477
Autumn,M_annularis,4.709770404
Autumn,M_annularis,3.554071459
Autumn,M_annularis,4.596686351
Autumn,M_annularis,3.530585628

解决方案

You should use interaction() for the fill= and provide both Species and Experiment inside interaction(). Then with scale_fill_manual() you can set values= for the colors you need (number of colors correspond to number of box-plots). Order of colors is, first, colors for Species in Autumn then colors for Species in Spring.

ggplot(DF, aes(Species, Protein, fill=interaction(Species,Experiment), dodge=Experiment)) +
  stat_boxplot(geom ='errorbar')+
  geom_boxplot()+
  scale_fill_manual(values=c("blue","green","red","cyan",
             + "darkblue","darkgreen","darkred","darkcyan"))

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