有没有办法在R中从这个 Dataframe 中提取数字？从字符串中提取整数

kadbb459 于 2023-04-27 发布在其他

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所以我有下面的 Dataframe

我尝试使用gsub来提取数据，但它不工作，因为它似乎gsub只提取数字而不是整数。有没有任何软件包或函数，将允许我提取整数？
我尽力了

gsub(".*?([0-9]+).*", "\1",Not_Detect_134$Not_Detect_134)

但它只返回

[1] "\001" "\001" "\001" "\001" "\001" "\001" "\001" "\001" "\001" "\001"
  [11] "\001" "\001" "\001" "\001" "\001" "\001" "\001" "\001" "\001" "\001"
  [21] "\001" "\001" "\001" "\001" "\001" "\001" "\001" "\001" "\001" "\001"
  [31] "\001" "\001" "\001" "\001" "\001" "\001" "\001" "\001" "\001" "\001"
  [41] "\001" "\001" "\001" "\001" "\001" "\001" "\001" "\001" "\001" "\001"

来源：https://stackoverflow.com/questions/76075594/is-there-a-way-to-extract-the-number-from-this-data-frame-in-r-extracting-integ