R 查找并替换括号内的值[重复]

Question

我想替换方括号内的字符串中的逗号无法找到解决方案我该如何使用 R 任何人请帮助我

“{group_boundaries:[0,2620,2883],sample_boundaries:[0,40,80]}”

我想要

“{group_boundaries：[0-2620-2883]，sample_boundaries：[0-40-80]}”

谢谢你

Answer 1

基础 R 及其

gregexpr

:

vec <- "{group_boundaries:[0,2620,2883], sample_boundaries:[0,40,80]}"
gre <- gregexpr("(?<=\\[)[^]]+(?=\\])", vec, perl = TRUE)
regmatches(vec, gre)
# [[1]]
# [1] "0,2620,2883" "0,40,80"    
regmatches(vec, gre) |>
  lapply(gsub, pattern = ",", replacement = "-")
# [[1]]
# [1] "0-2620-2883" "0-40-80"    
regmatches(vec, gre) <- regmatches(vec, gre) |>
  lapply(gsub, pattern = ",", replacement = "-")
vec
# [1] "{group_boundaries:[0-2620-2883], sample_boundaries:[0-40-80]}"