R 使用正则表达式从字符向量中提取文本
我有一个字符向量：R 使用正则表达式从字符向量中提取文本,r,regex,vector,character,R,Regex,Vector,Character,我有一个字符向量： >a [[1]] [1] "\nCEJAMA - COOPERATIVA DE ELETRICIDADE JACINTO MACHADO\n2.878,95\n1.457.218,40\n1.860.357,63\n5.220,00\n506,16\n646,19\nCELESC-DIS - CELESC DISTRIBUIÇÃO S.A**\n1.324.445,20\n611.036.730,94\n821.738.507,45\n3.064.08
>a
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[1] "\nCEJAMA - COOPERATIVA DE ELETRICIDADE JACINTO MACHADO\n2.878,95\n1.457.218,40\n1.860.357,63\n5.220,00\n506,16\n646,19\nCELESC-DIS - CELESC DISTRIBUIÇÃO
S.A**\n1.324.445,20\n611.036.730,94\n821.738.507,45\n3.064.084,00\n461,35\n620,44\n**CELG-D - CELG
DISTRIBUIÇÃO S.A.\n893.479,43\n412.181.508,00\n637.954.505,58\n3.120.340,00\n461,32\n714,01\nCELPE - COMPANHIA ENERGÉTICA DE PERNAMBUCO\n895.712,59\n431.113.973,93\n576.900.942,45\n3.761.190,00\n481,31\n644,07\nCEMAR - COMPANHIA
ENERGÉTICA DO MARANHÃO\n481.531,73\n267.383.865,68\n348.554.651,61\n2.564.221,00\n555,28\n723,85"
str_extract_all（a），（CELESC-DIS-CELESC DISTRIBUIÃO S.a）（*）（CELG-D）谢谢大家! 它似乎是一个
列表a[[1]]列表a[[1]]