无法将R中的系数转换为数值

我试过：

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• i因为数据有逗号，R无法将其转换为数字。您必须先删除带有
  sub（）
  的逗号，然后再转换：
  
  i <- as.numeric(gsub(",", "", as.character(impress)))
  
  i就计算机而言，
  ，
  不是一个数字，因此任何包含它的数字字符串都不能是数字，即使对人类来说这些数字看起来是完全可以接受的数字
  
  去掉
  ，
  ，然后它就会工作，例如使用
  gsub（）
  
  i是.numeric（i）
  [1] 真的
  sub（）
  在这里不起作用，因为这里有不止一个
  ，
  （或者至少我忘了如何让
  sub（）
  在那种情况下工作。）
  gsub（）
  解决了这个问题。对，
  sub（）
  只替换第一个，而
  gsub（）
  替换所有。我更新了我的答案。非常感谢！谢谢
  > Impress
   [1]  24,085,563.00   35,962,587.00   31,714,513.00   28,206,422.00   40,161,010.00   36,292,929.00   31,545,482.00 
   [8]  28,213,878.00   35,799,224.00   32,400,885.00   28,496,459.00   37,456,344.00   38,108,667.00   33,407,771.00 
  [15]  32,540,479.00   30,692,707.00   22,873,000.00   21,329,146.00   28,921,953.00   30,471,519.00   28,601,289.00 
  [22]  27,450,630.00   26,708,790.00   19,825,041.00   18,844,169.00   29,592,039.00   31,012,594.00   28,792,531.00 
  [29]  28,578,028.00   24,913,985.00 
  30 Levels:  18,844,169.00   19,825,041.00   21,329,146.00   22,873,000.00   24,085,563.00   24,913,985.00  ...  40,161,010.00 
  
  > paste(Impress)
   [1] " 24,085,563.00 " " 35,962,587.00 " " 31,714,513.00 " " 28,206,422.00 " " 40,161,010.00 " " 36,292,929.00 " " 31,545,482.00 "
   [8] " 28,213,878.00 " " 35,799,224.00 " " 32,400,885.00 " " 28,496,459.00 " " 37,456,344.00 " " 38,108,667.00 " " 33,407,771.00 "
  [15] " 32,540,479.00 " " 30,692,707.00 " " 22,873,000.00 " " 21,329,146.00 " " 28,921,953.00 " " 30,471,519.00 " " 28,601,289.00 "
  [22] " 27,450,630.00 " " 26,708,790.00 " " 19,825,041.00 " " 18,844,169.00 " " 29,592,039.00 " " 31,012,594.00 " " 28,792,531.00 "
  [29] " 28,578,028.00 " " 24,913,985.00 "
  
  i <- as.numeric(gsub(",", "", as.character(impress)))
  
  i <- as.numeric(gsub(",", "", as.character(Impress)))
  
  Impress <- c("24,085,563.00", "35,962,587.00", "31,714,513.00", "28,206,422.00")
  gsub(",", "", as.character(Impress))
  i <- as.numeric(gsub(",", "", as.character(Impress)))
  i
  
  R> gsub(",", "", as.character(Impress))
  [1] "24085563.00" "35962587.00" "31714513.00" "28206422.00"
  R> i
  [1] 24085563 35962587 31714513 28206422
  R> is.numeric(i)
  [1] TRUE