从 R 中的列表列表中获取行名
Take row names from list of lists in R
从列表列表开始,如 outcome:
id <- c(1,2,3,4,5,1,2,3,4,5)
month <- c(3,4,2,1,5,7,3,1,8,9)
preds <- c(0.5,0.1,0.15,0.23,0.75,0.6,0.49,0.81,0.37,0.14)
l_1 <- data.frame(id, preds, month)
preds <- c(0.45,0.18,0.35,0.63,0.25,0.63,0.29,0.11,0.17,0.24)
l_2 <- data.frame(id, preds, month)
preds <- c(0.58,0.13,0.55,0.13,0.76,0.3,0.29,0.81,0.27,0.04)
l_3 <- data.frame(id, preds, month)
preds <- c(0.3,0.61,0.18,0.29,0.85,0.76,0.56,0.91,0.48,0.91)
l_4 <- data.frame(id, preds, month)
outcome <- list(l_1, l_2, l_3, l_4)
我的兴趣是采用分配的唯一 行值 并创建一个新变量,就像我们这样做一样:
sample <- outcome[[1]]
sample$unique_id <- rownames(sample)
但是,我不想手动去,因为我的列表有 100 个列表。
此外,我不想手动为每一行分配值,因为我想保留 R 生成的行名称。
有线索吗?
尝试使用 lapply
lapply(outcome, function(x) {
x$unique_id <- rownames(x)
x
})
与 lapply
和 cbind
:
lapply(outcome, function(x) {
cbind(unique_id=rownames(x), x)
})
我们也可以用rownames_to_column
library(dplyr)
library(purrr)
library(tibble)
map(outcome, ~ .x %>%
rownames_to_column('unique_id'))
另一个基础 R 选项是使用 Map
Map(function(x){
x$unique_id <- rownames(x)
x
}, outcome)
从列表列表开始,如 outcome:
id <- c(1,2,3,4,5,1,2,3,4,5)
month <- c(3,4,2,1,5,7,3,1,8,9)
preds <- c(0.5,0.1,0.15,0.23,0.75,0.6,0.49,0.81,0.37,0.14)
l_1 <- data.frame(id, preds, month)
preds <- c(0.45,0.18,0.35,0.63,0.25,0.63,0.29,0.11,0.17,0.24)
l_2 <- data.frame(id, preds, month)
preds <- c(0.58,0.13,0.55,0.13,0.76,0.3,0.29,0.81,0.27,0.04)
l_3 <- data.frame(id, preds, month)
preds <- c(0.3,0.61,0.18,0.29,0.85,0.76,0.56,0.91,0.48,0.91)
l_4 <- data.frame(id, preds, month)
outcome <- list(l_1, l_2, l_3, l_4)
我的兴趣是采用分配的唯一 行值 并创建一个新变量,就像我们这样做一样:
sample <- outcome[[1]]
sample$unique_id <- rownames(sample)
但是,我不想手动去,因为我的列表有 100 个列表。 此外,我不想手动为每一行分配值,因为我想保留 R 生成的行名称。
有线索吗?
尝试使用 lapply
lapply(outcome, function(x) {
x$unique_id <- rownames(x)
x
})
与 lapply
和 cbind
:
lapply(outcome, function(x) {
cbind(unique_id=rownames(x), x)
})
我们也可以用rownames_to_column
library(dplyr)
library(purrr)
library(tibble)
map(outcome, ~ .x %>%
rownames_to_column('unique_id'))
另一个基础 R 选项是使用 Map
Map(function(x){
x$unique_id <- rownames(x)
x
}, outcome)