pie chart color mapping doesn't work properly when aggregating data

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#2,468 创建于 2026年1月13日 0 条评论 0 个 reaction 已指派 0 人在 GitHub 查看

还没有人认领这个 Issue。

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难度: 3/5
预计耗时: 1-2 天
新手友好度: 45/100

Issue 类型: 缺陷
描述清晰度: 基本清楚
活跃度: 停滞
技术栈: r
领域: data-visualization

调研方向

首先使用 mtcars 运行提供的两个 plot_ly 示例，并比较聚合数据和未聚合数据的饼图扇区颜色。查看 issue #1375 并跟踪饼图的颜色处理；当提供的颜色能够始终正确映射到相应组，且不需要额外的颜色条目时，即表示完成。

由索引模型根据 Issue 内容生成。

描述

This seems to be maybe a partial regression related to #1375. Using similar code to that issue:

library(plotly)
plot_ly(mtcars[c(1,3,5), c("cyl", "drat")], labels = ~cyl, values = ~drat, type = 'pie', 
        marker = list(colors = c("cyan", "magenta", "black"))) %>%
    layout(xaxis = list(showgrid = FALSE, zeroline = FALSE, showticklabels = FALSE),
           yaxis = list(showgrid = FALSE, zeroline = FALSE, showticklabels = FALSE))

plot_ly(mtcars[, c("cyl", "drat")], labels = ~cyl, values = ~drat, type = 'pie', 
        marker = list(colors = c("cyan", "magenta", "black"))) %>%
    layout(xaxis = list(showgrid = FALSE, zeroline = FALSE, showticklabels = FALSE),
           yaxis = list(showgrid = FALSE, zeroline = FALSE, showticklabels = FALSE))

It seems to apply the default palette color to the first group.

Interestingly, if you bang it in there a few more times it shows (though with different order).

plot_ly(mtcars[, c("cyl", "drat")], labels = ~cyl, values = ~drat, type = 'pie', 
        marker = list(colors = c("cyan", "magenta", "black", "magenta", "magenta"))) %>%
    layout(xaxis = list(showgrid = FALSE, zeroline = FALSE, showticklabels = FALSE),
           yaxis = list(showgrid = FALSE, zeroline = FALSE, showticklabels = FALSE))