多个 y 轴使用 plotly 和不同长度的数据

Question

使用 plotly 我经常遇到多条线图和不同长度的数据的问题。然后我找到了this的解决方案：

library(plotly)

df1 <- data.frame(
  id = c("Honda", "Honda", "Honda", "Merc", "Merc", "Merc", "Toyota", "Toyota"),
  date = c('10/30/12', '10/31/12', '11/1/12', '11/2/12', '10/30/12', '10/31/12', '11/1/12', '11/3/12'),
  Value = c(2, 3, 3, 4, 1, 2, 3, 2)
)

df1$date <- as.Date(df1$date, "%m/%d/%y")

df1 %>%
  group_by(id) %>%
  plot_ly(x=~date, y=~Value, type='scatter', color=~id, mode="lines+markers") %>%
  layout(xaxis=list(title="Date"),yaxis=list(title="Cars Sold"))

现在我面临下一个问题。如何在此示例中添加多个 y 轴？是否还有可能使用 R 拥有 2 个以上的 y 轴并像页面底部的this Python 示例中那样左右排列它们？例如。左边是本田和奔驰，右边是丰田。我找到了解决方案here，但是数据的长度相同，所以这对我不起作用。

我想防止像在这个数据框中那样缩放具有不同数量级的数据：

df1 <- data.frame(
  id = c("Honda", "Honda", "Honda", "Merc", "Merc", "Merc", "Toyota", "Toyota"),
  date = c('10/30/12', '10/31/12', '11/1/12', '11/2/12', '10/30/12', '10/31/12', '11/1/12', '11/3/12'),
  Value = c(0.02, 0.03, 0.03, 4, 1, 2, 3, 2)
)

Answer 1

请检查以下内容：

library(plotly)

df1 <- data.frame(
  id = c("Honda", "Honda", "Honda", "Merc", "Merc", "Merc", "Toyota", "Toyota"),
  yaxis = c("y", "y", "y", "y2", "y2", "y2", "y3", "y3"),
  date = c('10/30/12', '10/31/12', '11/1/12', '11/2/12', '10/30/12', '10/31/12', '11/1/12', '11/3/12'),
  Value = c(0.02, 0.03, 0.03, 4, 1, 2, 3, 2)
)

df1$date <- as.Date(df1$date, "%m/%d/%y")

y2 <- list(
  tickfont = list(color = "red"),
  overlaying = "y",
  side = "left",
  title = "Merc",
  position=0.1,
  showgrid = FALSE
)

y3 <- list(
  tickfont = list(color = "green"),
  overlaying = "y",
  side = "right",
  title = "Toyota",
  showgrid = FALSE
)

df1 %>%
  group_by(id) %>%
  plot_ly(x=~date, y=~Value, type='scatter', color=~id, mode="lines+markers", yaxis=~yaxis) %>%
  layout(xaxis=list(title="Date", domain = list(0.15, 0.95)), yaxis=list(title="Honda"), yaxis2=y2, yaxis3=y3)

更多信息请见this。