从数据框列中删除空格并添加路径

我们可以gsub用来删除空白区域.我们选择一个或多个空格(\\s+)并替换为''.

 df$names <- gsub('\\s+', '', df$names)
 df$names
 #[1] "stock1"       "stockstock12" "stock2"    

然后,我们使用paste将字符串连接在一起

  path <- "C:/Desktop/stock_files"
  df$names <- paste(path, df$names, sep="/")
  df$names
  #[1] "C:/Desktop/stock_files/stock1"       "C:/Desktop/stock_files/stockstock12"
  #[3] "C:/Desktop/stock_files/stock2"