ggplot2のグラフとプロットは、平均値と最小ここ

Question

は私のコードです：

library(dplyr); library(tidyr) 

T0.modified <- T0data %>% 

    # create year range based on each company's T0 year 
    mutate(Year.M1 = Year - 1, 
     Year.M2 = Year - 2, 
     Year.M3 = Year - 3, 
     Year.P1 = Year + 1, 
     Year.P2 = Year + 2, 
     Year.P3 = Year + 3) %>% 

    # convert to long format, match with Alldata based on both company & year 
    gather(reference.year, actual.year, -Company, -Price) %>% 
    left_join(Alldata, by = c("Company" = "Company", "actual.year" = "Year")) %>% 

    # keep T0 price for year T0, & use matched prices for all other years 
    mutate(Price = ifelse(reference.year == "Year", Price.x, Price.y)) %>% 

    # take maximum of all matched prices for each company each year 
    group_by(Company, reference.year) %>% 
    summarise(Price = max(Price)) %>% 
    ungroup() %>% 

    # order reference.year for correct sequence in ggplot's x-axis 
    mutate(reference.year = factor(reference.year, 
           levels = c("Year.M3", "Year.M2", "Year.M1", "Year", 
              "Year.P1", "Year.P2", "Year.P3"), 
          labels = c("T-3", "T-2", "T-1", "T0", "T+1", "T+2", "T+3"))) 

ggplot(T0.modified, 
     aes(x = reference.year, y = Price, group = Company, color = Company)) + 
    geom_line(aes()) + 
    xlab("Year") + theme_bw() + 

    stat_summary(fun.y = mean, geom = "line", group = 1, 
       linetype = 2, size = 1.5, colour = "grey") + 
    annotate("label", x = 7, y = 200, label = "Average", 
      fill = "grey", alpha = 0.5, hjust = 1) 

そして、ここに私のデータである

structure(list(Company = structure(c(1L, 1L, 1L, 1L, 1L, 1L, 
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 3L, 3L, 3L, 3L, 
3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L 
), .Label = c("Amazon", "Cisco", "McDonald's"), class = "factor"), 
    Year = c(2008L, 2008L, 2008L, 2008L, 2009L, 2009L, 2010L, 
    2010L, 2010L, 2011L, 2011L, 2012L, 2012L, 2013L, 2013L, 2014L, 
    2014L, 2014L, 2008L, 2010L, 2010L, 2010L, 2011L, 2011L, 2012L, 
    2012L, 2013L, 2013L, 2014L, 2014L, 2014L, 2015L, 2015L, 2016L, 
    2016L, 2016L, 2005L, 2005L, 2005L, 2006L, 2006L, 2007L, 2007L, 
    2007L, 2008L, 2008L, 2009L, 2009L, 2009L, 2010L, 2010L, 2011L, 
    2011L, 2011L), Price = c(91L, 77L, 81L, 87L, 63L, 88L, 110L, 
    75L, 117L, 170L, 190L, 215L, 245L, 316L, 275L, 330L, 378L, 
    390L, 55L, 62L, 66L, 65L, 72L, 98L, 93L, 88L, 99L, 101L, 
    94L, 103L, 96L, 99L, 116L, 112L, 123L, 113L, 19L, 17L, 18L, 
    20L, 19L, 26L, 31L, 27L, 24L, 21L, 14L, 22L, 18L, 26L, 22L, 
    14L, 16L, 15L)), .Names = c("Company", "Year", "Price"), class = "data.frame", row.names = c(NA, 
-54L)) 

ここに私の質問です：

折れ線グラフにすべての値の2つの値、平均値、最小値のみを表示させるにはどうすればよいですか？ そして、ランダムな会社をプロットして、グラフの第3行目を最小値と平均値と比較する方法を教えてください。

Answer 1

これは何か？平均、最小、ランダムの会社をプロットします（サブセットを参照）。

p = ggplot(T0.modified) + xlab("Year") + theme_bw() + 
       stat_summary(aes(x = reference.year, y = Price),fun.y = mean, geom = "line", group = 1, linetype = 2, size = 1.5, colour = "grey") + 
       stat_summary(aes(x = reference.year, y = Price),fun.y = min, geom = "line", group = 1, linetype = 2, size = 1.5, colour = "red") + 
       annotate("label", x = 7, y = 200, label = "Average", fill = "grey", alpha = 0.5, hjust = 1) + 
       annotate("label", x = 7, y = 30, label = "Min", fill = "grey", alpha = 0.5, hjust = 1) + 
       geom_line(data = subset(T0.modified,Company=="Amazon"),aes(x = reference.year, y = Price,group=Company),color="blue")