r - 我正在尝试使用 ggiraph 向 ggplot2 图形添加交互性，但它不起作用

Question

我发现这段代码完全符合我的要求，但显然它使用的是用 charlatan 创建的假数据集。它所做的是将数据表的每一行变成可选择的图形线。它为每一行启用工具提示，并在选择一个时淡化其他行。

library(ggplot2)
library(ggiraph)
library(data.table)
library(charlatan)

species <- ch_taxonomic_species(n = 10)
dat <- lapply(species, function(species, n){
  data.table(
    date = as.Date(seq_len(n), origin = "2018-10-25"),
    sales = cumsum(runif(n, -1, 1)),
    species = species,
    name = ch_name(n = n)
  )
}, n = 200)
dat <- rbindlist(dat)

gg <- ggplot(dat, aes(x = date, y = sales, 
                      colour = species, group = species)) +
  geom_line_interactive(aes(tooltip = name, data_id = species)) +
  scale_color_viridis_d() + 
  labs(title = "move mouse over lines")

x <- girafe(ggobj = gg, width_svg = 8, height_svg = 6,
  options = list(
    opts_hover_inv(css = "opacity:0.1;"),
    opts_hover(css = "stroke-width:2;")
  ))
x

我已经有了我的数据集，调用g它我已经能够制作一个 ggplot 图。我的代码如下所示：

g <- ggplot() +
   geom_line(data = dat22, aes(x=YEAR, y=RO_MM, group = HUC8, color= HUC8))+
   geom_line(data = dat21, aes(x=YEAR, y=RO_MM, group = HUC8, color= HUC8))+
   geom_line(data = dat20, aes(x=YEAR, y=RO_MM, group = HUC8, color= HUC8))+ 
   geom_line(data = dat19, aes(x=YEAR, y=RO_MM, group = HUC8, color= HUC8))+
   geom_line(data = dat18, aes(x=YEAR, y=RO_MM, group = HUC8, color= HUC8))+
   geom_line(data = dat17, aes(x=YEAR, y=RO_MM, group = HUC8, color= HUC8))+
   geom_line(data = dat16, aes(x=YEAR, y=RO_MM, group = HUC8, color= HUC8))+
   geom_line(data = dat15, aes(x=YEAR, y=RO_MM, group = HUC8, color= HUC8))+ 
   geom_line(data = dat14, aes(x=YEAR, y=RO_MM, group = HUC8, color= HUC8))+
   geom_line(data = dat13, aes(x=YEAR, y=RO_MM, group = HUC8, color= HUC8))+
   geom_line(data = dat12, aes(x=YEAR, y=RO_MM, group = HUC8, color= HUC8))+
   geom_line(data = dat11, aes(x=YEAR, y=RO_MM, group = HUC8, color= HUC8))+
scale_color_manual(values = c("gray","gray","gray","gray","gray","gray","gray","gray","gray","gray","gray","black"))

dat我从中创建图表中每一行的每个表看起来都与此类似（但更大）：

dat1 <- read.table(text = "HUC8 YEAR    RO_MM
bcc1_45Fall_1020004 1961    112
bcc1_45Fall_1020004 1962    243.7
bcc1_45Fall_1020004 1963    233.3
bcc1_45Fall_1020004 1964    190.3
bcc1_45Fall_1020004 1965    200.1
bcc1_45Fall_1020004 1966    220.8
bcc1_45Fall_1020004 1967    130.4
bcc1_45Fall_1020004 1968    90
bcc1_45Fall_1020004 1969    211.2
bcc1_45Fall_1020004 1970    157.6
bcc1_45Fall_1020004 1971    221
bcc1_45Fall_1020004 1972    223.5
bcc1_45Fall_1020004 1973    166.7
bcc1_45Fall_1020004 1974    60
bcc1_45Fall_1020004 1975    144.8
bcc1_45Fall_1020004 1976    150.6
bcc1_45Fall_1020004 1977    129.9
bcc1_45Fall_1020004 1978    223.4
bcc1_45Fall_1020004 1979    235.3
bcc1_45Fall_1020004 1980    143.4
bcc1_45Fall_1020004 1981    55.4
bcc1_45Fall_1020004 1982    214.8
bcc1_45Fall_1020004 1983    217.1
bcc1_45Fall_1020004 1984    126.5
bcc1_45Fall_1020004 1985    106.7",
    header = TRUE)

我创建了多线 ggplot，因为在使用 之后我无法找到一种方法从数据集中的每个数据块中制作单独的图形线rbind，所以我单独做了。我能够创建这个图表：

但我希望它是交互式的。谁能告诉我如何将我的代码用于这个 ggiraph 代码？我希望能够突出显示/选择每一行以直观地将其与黑线进行比较。

我尝试将其添加到我的代码末尾：

 geom_line_interactive(aes(tooltip = HUC8, data_id = HUC8)) +
   labs(title = "HUC8-01020004")
g

它说它“找不到HUC8”。我已经尝试过了，结果相同：

my_giraph <- g + geom_line_interactive(
   aes(data_id = HUC8), size = 1)
   girafe(code = print(my_giraph))

还有很多其他的事情，但我没有运气。

寻找@David Gohel！（谁写了 ggiraph 代码）还有人知道吗？

标签： rggplot2interactiveggiraph