散点图上两点之间的标签范围与百分比差异

Question

我有一个简单的散点图，显示不同范围内年份之间的销售差异。

因此，当范围为“>400 美元”时，2013 年的销售额为 X，2014 年的销售额为 X。

我正在尝试在某些点添加注释，以显示 2013 年到 2014 年的百分比差异。这可能吗？

这是输出：

structure(list(Year = c(2013L, 2013L, 2013L, 2013L, 2013L, 2013L, 
2013L, 2013L, 2013L, 2013L, 2013L, 2013L, 2013L, 2013L, 2013L, 
2013L, 2013L, 2013L, 2013L, 2013L, 2013L, 2013L, 2013L, 2014L, 
2014L, 2014L, 2014L, 2014L, 2014L, 2014L, 2014L, 2014L, 2014L, 
2014L, 2014L, 2014L, 2014L, 2014L, 2014L, 2014L, 2014L, 2014L, 
2014L, 2014L), Range = structure(c(8L, 9L, 10L, 11L, 12L, 13L, 
14L, 16L, 17L, 18L, 19L, 20L, 21L, 23L, 24L, 1L, 2L, 3L, 4L, 
5L, 6L, 7L, 26L, 8L, 9L, 10L, 11L, 12L, 13L, 15L, 17L, 18L, 19L, 
20L, 21L, 23L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 26L), .Label = c("M", 
"M", "M", "M", "-80M", "-90M", "-100M", "1-110M", 
"1-120M", "1-130M", "1-140M", "1-150M", "1-160M", 
"1-170M", "1-180M", "1-190M", "1-200M", "0-225M", 
"6-250M", "1-275M", "6-300M", "1-325M", "6-350M", 
"1-375M", "6-400M", ">0M"), class = "factor"), Avg_TOTALS = c(44732492.5, 
42902206, 47355762, 49604750.6666667, 51132411, 51943986, 54798652.5, 
61313778.5, 68577392, 74457422.6666667, 84805802.5, 96762417, 
99355792, 172956681, 189815908, 31762600.8571429, 33042576.2857143, 
34964083.8, 34349980.2, 35193407, 36049038.6666667, 42039793.3333333, 
486133671, 35996925, 35496337.5, 39139472.5, 36993568.5, 39570379, 
40139421.5, 43835119, 51358298.5, 53024160, 61185564, 67726723, 
71481251, 89873814, 27746650.1428571, 27633867, 29855703.5714286, 
29655265.2, 31163788.8, 29240507, 33810795.25, 192756973)), .Names = c("Year", 
"Range", "Avg_TOTALS"), class = "data.frame", row.names = c(NA, 
-44L))

这是我当前生成的图表：

orderlist = c("M", "M", "M", "M", "-80M", "-90M", "-    100M", "1-110M", "1-120M", "1-130M", 
              "1-140M", "1-150M", "1-160M", "1-170M", "1-180M", "1-190M", "1-200M", "0-225M",
              "6-250M", "1-275M", "6-300M", "1-325M", "6-350M", "1-375M", "6-400M", ">0M")

myDF = transform(myDF, Range = factor(Range, levels = orderlist))

myChart <- ggplot(myDF, aes(x = Range, y = Avg_TOTALS)) +
           geom_point(aes(color = factor(Year))) + 
           theme_tufte() +
           theme(axis.text.x= element_text(angle = 90, hjust = 0)) +
           labs(x = "Range", y = "Sales by Range", title = "MyChart")+
           scale_y_continuous(breaks = c(50000000, 100000000, 200000000,
                                         300000000,400000000, 500000000),
                              labels = dollar)

这给了我：

并引出了这个问题：

以 2013 年为基准年，我如何添加这些点之间的百分比差异？也，有一些范围在两年中只有一年有销售——是否可以跳过这些范围内的百分比标签？一个条件是数据必须在两个年份都存在才能被包含？

感谢您的帮助！

Answer 1

这是一种方法。我认为有更好的方法。这是我昏昏欲睡的大脑中最好的。希望你不介意。让我简要解释一下代码。我关注你了。然后，我获得了 ggplot 使用的数据，我称之为 foo。我创建了一个主数据框来处理丢失的数据点并使用了连接。 dplyr 部分正在做一些计算和东西以获得比例。使用 annotate 中的结果，我分配了您想要的标签。希望这会帮助你。 zzz...

数据

mydf <- structure(list(Year = c(2013L, 2013L, 2013L, 2013L, 2013L, 2013L, 
2013L, 2013L, 2013L, 2013L, 2013L, 2013L, 2013L, 2013L, 2013L, 
2013L, 2013L, 2013L, 2013L, 2013L, 2013L, 2013L, 2013L, 2014L, 
2014L, 2014L, 2014L, 2014L, 2014L, 2014L, 2014L, 2014L, 2014L, 
2014L, 2014L, 2014L, 2014L, 2014L, 2014L, 2014L, 2014L, 2014L, 
2014L, 2014L), Range = structure(c(8L, 9L, 10L, 11L, 12L, 13L, 
14L, 16L, 17L, 18L, 19L, 20L, 21L, 23L, 24L, 1L, 2L, 3L, 4L, 
5L, 6L, 7L, 26L, 8L, 9L, 10L, 11L, 12L, 13L, 15L, 17L, 18L, 19L, 
20L, 21L, 23L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 26L), .Label = c("M", 
"M", "M", "M", "-80M", "-90M", "-100M", "1-110M", 
"1-120M", "1-130M", "1-140M", "1-150M", "1-160M", 
"1-170M", "1-180M", "1-190M", "1-200M", "0-225M", 
"6-250M", "1-275M", "6-300M", "1-325M", "6-350M", 
"1-375M", "6-400M", ">0M"), class = "factor"), Avg_TOTALS = c(44732492.5, 
42902206, 47355762, 49604750.6666667, 51132411, 51943986, 54798652.5, 
61313778.5, 68577392, 74457422.6666667, 84805802.5, 96762417, 
99355792, 172956681, 189815908, 31762600.8571429, 33042576.2857143, 
34964083.8, 34349980.2, 35193407, 36049038.6666667, 42039793.3333333, 
486133671, 35996925, 35496337.5, 39139472.5, 36993568.5, 39570379, 
40139421.5, 43835119, 51358298.5, 53024160, 61185564, 67726723, 
71481251, 89873814, 27746650.1428571, 27633867, 29855703.5714286, 
29655265.2, 31163788.8, 29240507, 33810795.25, 192756973)), .Names = c("Year", 
"Range", "Avg_TOTALS"), class = "data.frame", row.names = c(NA, 
-44L))


orderlist = c("M", "M", "M", "M", "-80M", "-90M", "-    100M", "1-110M", "1-120M", "1-130M", 
          "1-140M", "1-150M", "1-160M", "1-170M", "1-180M", "1-190M", "1-200M", "0-225M",
          "6-250M", "1-275M", "6-300M", "1-325M", "6-350M", "1-375M", "6-400M", ">0M")

mydf = transform(myDF, Range = factor(Range, levels = orderlist))

g <- ggplot(mydf, aes(x = Range, y = Avg_TOTALS)) +
     geom_point(aes(color = factor(Year))) + 
     #theme_tufte() +
     theme(axis.text.x= element_text(angle = 90, hjust = 0))+
     labs(x="Range", y = "Sales by Range", title = "MyChart")+
     scale_y_continuous(breaks = c(50000000, 100000000, 200000000, 300000000,400000000, 500000000), labels = dollar)

library(dplyr)

foo <- ggplot_build(g)$data[[1]] %>%
       arrange(group) %>%
       mutate(year = c(rep("2013", times = 23), rep("2014", times = 21)))


master <- expand.grid(year = c("2013", "2014"), group = 1:24)

full_join(master, foo, by = c("year", c("group" = "x"))) %>%
group_by(group) %>%
mutate(prop = round(order_by(year, y / first(y)), 2)) %>%
summarise(y = first(y), prop = min(prop, na.rm = FALSE)) -> txt

g + annotate("text", x = txt$group, y = txt$y + 15000000, label = txt$prop)

散点图上两点之间的标签范围与百分比差异

Label Range between two points on scatterplot with the percent difference

charts

r

ggplot2