使用R中的Plotly制作带有多个y轴的图表

Question

在Python的Plotly中，我们有一个漂亮的多Y轴示例：这里是代码的链接。

我尝试使用R中的Plotly做相同的事情，使用以下代码：

  library(plotly)

x <- 1:4
y1 <- c(1,2,3,4)
y2 <- c(4,3,2,1)
y3 <- c(1,4,1,4)
y4 <- c(4,1,4,1)

test <- data.frame(x, y1, y2, y3, y4)

plot_ly(data = test, x = ~x, y = ~y1
        ,type = "scatter", mode = "lines", width = 800, color = I("red")
        ,name = "name01") %>%
  add_trace(x = ~x, y = ~y2, yaxis = "y2", color = I("blue"), name = "name02") %>%
  add_trace(x = ~x, y = ~y3, yaxis = "y3", color = I("purple"), name = "name03") %>%
  add_trace(x = ~x, y = ~y4, yaxis = "y4", color = I("green"), name = "name04") %>%
  layout(
    yaxis = list(
      showline = FALSE, side = "left"
      ,title = "Label 1"
      ,color = "red"
    )
    ,yaxis2 = list(
      showline = FALSE
      ,overlaying = "y"
      ,title = "Label 2", anchor = "free"
      ,color = "blue"
    )
    ,yaxis3 = list(
      showline = FALSE, side = "right", overlaying = "y"
      ,title = "Label 3"
      ,color = "purple"
    )
    ,yaxis4 = list(
      showline = FALSE, side = "right", overlaying = "y", position = 1
      ,title = "Label 4", anchor = "free"
      ,color = "green"
    )
    ,xaxis = list(
      showline = FALSE, zeroline = FALSE, dtick = 1, title = ""
    )
    ,showlegend = FALSE
    ,margin = list(
      pad = 30, b = 90, l = 150, r = 90
    )
    ,legend = list(orientation = "h")
  )

但是我得到了这些重叠的标签:

我该如何修复它，以获得一个不重叠的图表？

- Murta

Answer 1

尝试调整layout()函数中margin参数的pad值。在您的其他参数中，我发现最好的结果是将pad设置为49。

图片链接:

- HubertL

---

根据这个讨论 https://community.plotly.com/t/multiple-y-axes-name-on-top-of-each-other/10663/3，您还可以使用 xaxis = list(domain=c(0,.9)) 限制 x 轴的范围，以便为其他 y 轴腾出更多空间。然后，您可以使用 position 来放置 y 轴。在这种情况下，position 将位于 0.9 和 1 之间。 - simoet

@simoet 上面的评论非常好用！！！特别是当图例和次坐标轴重叠时。 - mirmo