如何在geom_col()中为重复的x轴值设置单独的列? [英] How to have separate columns for duplicate x-axis values in geom_col()?

问题描述

我有一个如下所示的数据框(非常简单的结构)，我想绘制一个柱形图以显示每个日期的金额.问题在于 date 有重复的条目(例如 2020-01-15 ).

I have a dataframe as below (very simple structure) and I want to draw a column chart to show the amount for each date. The issue is that the date has duplicate entries (e.g., 2020-01-15).

  # A tibble: 5 x 2
  date       amount
  <date>      <dbl>
1 2020-01-02  4000 
2 2020-01-06  2568.
3 2020-01-15  2615.
4 2020-01-15  2565 
5 2020-01-16  2640 

当我尝试执行以下操作时，它会以某种方式将相似的日期分组在一起，并绘制出堆积的柱状图，这不是我想要的.

When I try doing the following it somehow groups the similar dates together and draws a stacked column chart which is NOT what I want.

df %>%  
    ggplot(aes(x= factor(date), y=amount)) +
    geom_col()
    scale_x_discrete( labels = df$date ) #this creates discrete x-axis labels but the values are still stacked. So it just messes things up.

如果我使用的是 geom_line()，这没有问题，但是我希望看到每个日期的栏.知道怎么做吗?

There's no issue if i'm using geom_line() but I want to see a bar for each date. Any idea how to do this?

推荐答案

尝试:

df %>% 
  ggplot(aes(date, amount)) +
  geom_col(position = position_dodge2()) + 
  scale_x_date(breaks = unique(df$date))

结果:

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