小编Dev*_*kan的帖子

我想根据某些条件递归地修改列表的值。

mylist = list(a = "test1", 
              b = list(bb = "test2", list(bbb = "test1")), 
              c = "test2")

我想修改值为test1的值，并将其替换在此列表中或创建一个新列表。例如，如果修改是将test1替换为best1，则结果列表应为

mylist = list(a = "best1", 
              b = list(bb = "test2", list(bbb = "best1")), 
              c = "test2")

在R中最干净的方法是什么？

我正在尝试在以下代码中添加辅助轴的图例

library(ggplot2)
library(dplyr)
library(reshape2)

df = data.frame(period = seq(as.POSIXct("2017-01-01"),as.POSIXct("2017-12-01"), by = "month"), 
                b = c(100, 110, 105, 200, 210, 190, 180, 170, 165, 175, 140, 145),
                c = c(120, 130, 150, 170, 250, 160, 130, 120, 110, 130, 120, 170),
                d = c(1060, 1180, 1050, 2070, 2150, 1900, 1850, 1070, 1605, 1750, 1460, 1250)) %>% 
             mutate(period = factor(period))

df_bar = melt(df, id.vars = "period", measure.vars = c("b", "c", "d")) %>% filter(variable != "d")

df_line = df %>% select(period, d)

ggplot(data …