R中的堆积条形图 [英] Stacked bar chart in R

问题描述

我有一个看起来像这样的数据集

I have a data set that looks like this

我想绘制一个堆叠的条形图，其中X为Session，Y为不存在，Present堆叠为另一个.如何在 R

I want to plot a stacked bar chart with X being Session and Y as Absent and Present stacked one above another. How to do this in ggplot() in R

推荐答案

请查看如何在SO上提问以及如何提供数据/示例.如果我们准备好了所有信息，那么人们可以轻松地为您提供帮助.

Please have a look at how to ask questions on SO and how to provide data/examples. It makes it a lot easier for people to help you if we have all the information ready to go.

我已经使用您的一些数据制作了一个表格:

I've produced a table using some of your data:

library(tidyverse)

df <- tribble(~absent, ~present, ~total, ~session,
        15,8,3,'s1',
        12,11,23,'s2',
        12,10,23,'s4',
        14,9,23,'s5',
        18,5,23,'s6',
        17,6,23,'s7')

聚会

就生成图表而言，首先，您需要通过调用 gather 来组织数据，以便可以将当前/不存在的变量传递给<代码> ggplot .

Gathering

In terms of producing the chart, first you need to organise your data by calling gather so that you can pass the present/absent variable to the fill method in ggplot.

gather(df, key, value, -total, -session)

这样可以整理您的数据:

This arranges your data like so:

   total session key     value
   <dbl> <chr>   <chr>   <dbl>
 1    3. s1      absent    15.
 2   23. s2      absent    12.
 3   23. s4      absent    12.
 4   23. s5      absent    14.
 5   23. s6      absent    18.
 6   23. s7      absent    17.
 7    3. s1      present    8.
 8   23. s2      present   11.
 9   23. s4      present   10.
10   23. s5      present    9.
11   23. s6      present    5.
12   23. s7      present    6.

绘图

然后，您可以调用 ggplot 来创建带有以下内容的柱形图:

Plotting

Then you can call ggplot to create a column chart with the following:

  ggplot(df, aes(x = session, y = value)) +
  geom_col(aes(fill = key))

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