R可视化：桑基图展示数据层流动

介绍 

以桑基图形式展示数据分布情况

加载R包

knitr::opts_chunk$set(message = FALSE, warning = FALSE)
library(tidyverse)
library(ggalluvial)
 
# rm(list = ls())
options(stringsAsFactors = F)
options(future.globals.maxSize = 10000 * 1024^2)

导入数据

metadata <- read.csv("Data_summary.csv")
 
head(metadata)

颜色准备

useMyCol <- function(platte = NULL,
                     n = NULL,
                     showAll = FALSE){
  #---------------------------------------------------------------
  # Primarily Discrete Palettes
  #---------------------------------------------------------------
  # ==================&#