Question

我正在尝试将计数/百分比添加到饼图的图例标签中。饼图非常糟糕，我知道，但这不是本文的重点。我想将“ Count”的值粘贴到图例上的“ Wound.Type”标签上，但无法弄清楚如何为以下代码的每次迭代访问Counts。目标将是类似于“ 5级”的目标或其他任何数字。我已经尝试过“。〜Count”和“。〜Wound.Type”，“。$ Count”和“。$ Wound.Type”，但是我不知道如何访问我想要的特定值。

p1 <- DF %>% 
  split(.$ServiceSite) %>%
  imap(function(data, site) {
    data %>%
  group_by(ServiceSite, Wound.Type) %>%
  summarise(Count = n()) %>%
   mutate(share = round(Count / sum(Count), digits = 2)) %>%
    ggplot(aes(x = "", y = Count, fill = Wound.Type)) +
    geom_col(width = 1) +
    scale_fill_discrete(labels = paste(.$Wound.Type, .$Count))+
    facet_grid(facets = .~ServiceSite, labeller = label_value)+
    geom_text(aes(label = Count, y = ), position = position_stack(vjust = 0.5)) +
    coord_polar(theta = "y")+
    labs(caption = "Visits from 1/1/18-6/30/18")+
    ggtitle("Count of Unique Wound Occurrences")+
    theme(plot.caption = element_text(size= 8, hjust = .5))+
    theme(plot.title = element_text(hjust = 0.5))+
    theme(plot.subtitle = element_text(hjust = 0.5))+
    ylab("")+
    xlab("")+
    theme(axis.text = element_blank(),
        axis.ticks = element_blank(),
        panel.grid  = element_blank())
  })
p1

电流输出：

数据：

ServiceSite.x InitialType

2   Dermatitis
2   Diabetic
2   Pressure Injury
2   Pressure Injury
3   Pressure Injury
3   Other
3   Laceration
3   Other
4   Pressure Injury
4   MASD
4   Blister (Non-Pressure)
4   Skin Tear
4   Pressure Injury
5   Skin Tear
5   Other
5   Contusion
5   Skin Tear
5   Surgical(Non-Healing)
5   Pressure Injury
6   Pressure Injury
1   Pressure Injury
6   Pressure Injury
6   MASD
1   Surgical(Non-Healing)
1   Pressure Injury
1   Skin Tear
1   Contusion

Answer 1

通常，您可以为此使用函数参数。由于data参数引用数据集，因此您可以直接引用原始数据集中的变量。在您的示例中为data$Wound.Type。

但是，您在函数内动态添加了Count变量，因此该变量不在传递给data参数的数据集中。您可以在函数中创建一个新对象，而不是将数据集直接传递到ggplot()。这将使您可以引用此“变异”数据集中的变量。

这里是一个示例，其中我创建了一个名为dat2的新数据集，该数据集在ggplot()中使用，可以用于fill名称。

对该功能的关键更改是在该功能内创建一个新对象：

dat2 = data %>%
            group_by(ServiceSite, Wound.Type) %>%
            summarise(Count = n()) %>%
            mutate(share = round(Count / sum(Count), digits = 2))

并将该对象用于fill标签：

scale_fill_discrete(labels = paste(dat2$Wound.Type, dat2$Count))

这些更改以及您的其余部分：

DF %>% 
     split(.$ServiceSite) %>%
     imap(function(data, site) {
          dat2 = data %>%
               group_by(ServiceSite, Wound.Type) %>%
               summarise(Count = n()) %>%
               mutate(share = round(Count / sum(Count), digits = 2)) 
          ggplot(dat2, aes(x = "", y = Count, fill = Wound.Type)) +
               geom_col(width = 1) +
               scale_fill_discrete(labels = paste(dat2$Wound.Type, dat2$Count))+
               facet_grid(facets = .~ServiceSite, labeller = label_value)+
               geom_text(aes(label = Count, y = ), position = position_stack(vjust = 0.5)) +
               coord_polar(theta = "y")+
               labs(caption = "Visits from 1/1/18-6/30/18")+
               ggtitle("Count of Unique Wound Occurrences")+
               theme(plot.caption = element_text(size= 8, hjust = .5))+
               theme(plot.title = element_text(hjust = 0.5))+
               theme(plot.subtitle = element_text(hjust = 0.5))+
               ylab("")+
               xlab("")+
               theme(axis.text = element_blank(),
                     axis.ticks = element_blank(),
                     panel.grid  = element_blank())
     })

将计数添加到图例标签

1 个答案: