Question

我有以下数据：

df = data.frame(c("2012","2012","2012","2013"),
                c("tuesday","tuesday","friday","thursday"),
                c("AAA","BBB","AAA","AAA"))
colnames(df) = c("year","day","type")

我想显示每年和每天type值（AAA，BBB）的出现次数（绝对频率）。目前我编写了以下代码，但它要求我向aes添加一个维度，例如aes(type, some_dimension, fill = as.factor(year))。那么，我该如何添加count(type)？

之类的内容

ggplot(dat) +
  geom_bar(aes(type, fill = as.factor(year)), 
           position = "dodge", stat = "identity") + 
  facet_wrap(~day)

Answer 1

在geom_bar将stat从"identity"更改为"count"，就像这里一样：

library("ggplot2")

ggplot(df) +
    geom_bar(aes(x = type, fill = as.factor(year)), 
             position = "dodge", stat = "count") + 
    facet_wrap(~day)

计算ggplot中值的出现次数

1 个答案: