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我想使用 R 中的包来创建一个桑基图，因为我更喜欢用其他可视化ggforce制作的平行集图的外观。ggforce我有从左到右按级别排序的节点。但是，我希望某些链接直接从 1 级到 5 级，而不会触及其间的节点。此图显示了使用 networkd3 制作的桑基图，其中“生产”直接链接到“浪费”的干预级别。在此处输入图像描述

这种类型的图表可以用创建ggforce吗？我尝试了以下方法，但它返回错误，因为它不允许任何级别的缺失值。

输入数据

fsc_sankey <- structure(list(stage1 = c("production", "production", "production", 
                                        "production", "production", "production", "production", "production", 
                                        "production"), stage2 = c(NA, "processing", "processing", "processing", 
                                                                  "processing", "processing", "processing", "processing", "processing"
                                        ), stage3 = c(NA, NA, "retail", NA, NA, NA, NA, "retail", "retail"
                                        ), stage4 = c(NA, NA, NA, "foodservice", "foodservice", "institutions", 
                                                      "institutions", "households", "households"), destination = c("waste", 
                                                                                                                   "waste", "waste", "consumed", "waste", "consumed", "waste", "consumed", 
                                                                                                                   "waste"), value = c(1L, 1L, 1L, 3L, 1L, 3L, 1L, 3L, 1L)), class = "data.frame", row.names = c(NA, 
                                                                                                                                                                                                                 -9L))

代码

library(tidyverse)
library(ggforce)

fsc_sankey_set <- gather_set_data(fsc_sankey, 1:5) %>%
  mutate(x = factor(x, levels = c('stage1','stage2','stage3','stage4','destination'))) 

ggplot(fsc_sankey_set, aes(x, id = id, split = y, value = value)) +
  geom_parallel_sets(alpha = 0.3, axis.width = 0.1) +
  geom_parallel_sets_axes(axis.width = 0.1) +
  geom_parallel_sets_labels(colour = 'white')
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