颜色Map在R中无法使用plotly

des4xlb0 于 2023-06-19 发布在其他

关注(0)|答案(1)|浏览(108)

我有一个像这样的数据框

df1 <- data.frame("time" = 1:10, A1 = rnorm(10), B1 = rnorm(10), C1 = rnorm(10), D1 = rnorm(10))
df2 <- data.frame("time" = 1:5, A2 = rnorm(5), B2 = rnorm(5),  C2 = rnorm(5), D2 = rnorm(5))

我想绘制df1，x轴为“时间”，y轴为所有其他变量。类似地，我想在x轴上绘制df2，在y轴上绘制所有其他变量。在本例中，我希望线是“点”，标记是空心圆。我指定了要使用的以下颜色

my_colors <- c(             ## add the standard plotly colors
  'red',  
  'blue',  
  'green',  
  'yellow'
)

下面是我尝试过的plotly代码

longDF1 <- melt(df1, id.vars = "time")
longDF2 <- melt(df2, id.vars = "time")
  
  plot_ly() %>%
  add_trace(data = longDF1, x = ~time, y = ~value, type = 'scatter', mode = 'lines+markers', color = ~variable,
            line = list(color = my_colors, dash = 'solid'),
            marker = list(color = my_colors, symbol = 'circle')) %>% 
  add_trace(data = longDF2, x = ~time, y = ~value, type = 'scatter', mode = 'lines+markers', color = ~variable,
            line = list(color = my_colors, dash = 'dot'),
            marker = list(color = my_colors, symbol = 'circle-open'))

颜色似乎没有被添加到情节中。相反，plotly会生成自己的颜色。有什么解决办法吗？

r

来源：https://stackoverflow.com/questions/76410695/color-mapping-not-working-with-plotly-in-r

1条答案

按热度按时间

2hh7jdfx1#

要获得所需的颜色，请从line和marker规范中删除color属性，并将颜色向量传递给colors属性，只需将其传递给第一个跟踪或直接在plot_ly()中传递，如下所述。此外，当你有八个不同的类别复制你的颜色矢量，即。使用colors = c(my_colors, my_colors)。

library(plotly)

set.seed(123)

plot_ly(colors = c(my_colors, my_colors)) %>%
  add_trace(
    data = longDF1, x = ~time, y = ~value, type = "scatter", mode = "lines+markers", color = ~variable,
    line = list(dash = "solid"),
    marker = list(symbol = "circle")
  ) %>%
  add_trace(
    data = longDF2, x = ~time, y = ~value, type = "scatter", mode = "lines+markers", color = ~variable,
    line = list(dash = "dot"),
    marker = list(symbol = "circle-open")
  )

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颜色Map在R中无法使用plotly

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