如何使用 R 将数据帧/矩阵写入 CSV，但值中有逗号

Posted 2023-04-14

【中文标题】如何使用 R 将数据帧/矩阵写入 CSV，但值中有逗号

【英文标题】：How to write the dataframe/matrix into CSV using R but with commas in values

【发布时间】：2014-03-19 04:14:48

【问题描述】：

我只是想将我的矩阵导出到 csv 文件中，但有些列的值中包含逗号。我也尝试将逗号替换为其他符号，例如“|”。但它仍然不起作用。

例如我的文字是这样的

"41305348","PLAZA HOTEL(CHAMPAGNE BAR,ROSE CLUB, PALM COURT, EMPLOYEE CAFETERIA)","1","768","5 AVENUE","10019","2127593000","03","2012-10-25 00:00:00","U","10F","27","B","2012-10-25 00:00:00","2013-02-15 01:01:09.020000000"
"41305395","DUMPLING HOUSE","1","118 A","ELDRIDGE STREET","10002","2126258008","20","2013-01-10 00:00:00","D","10F","13","A","2013-01-10 00:00:00","2013-02-15 01:01:09.020000000"

webextract.raw=readLines(mytext)
webextract.split2=sapply(webextract.raw,function(x)strsplit(x,"[^[:alpha:]],[^ ]"))
t=sapply(c(1:14),function(x)sapply(webextract.split2,function(y)y[x]))
write.table(t,"t.csv")

如果我直接使用write.table，由于"PLAZA HOTEL(CHAMPAGNE BAR,ROSE CLUB, PALM COURT, EMPLOYEE CAFETERIA)" 中有逗号，第一条记录将被分成比第二条更多的列。

关于如何摆脱这种情况并将"PLAZA HOTEL(CHAMPAGNE BAR,ROSE CLUB, PALM COURT, EMPLOYEE CAFETERIA)" 包装在一起的任何想法？

谢谢！

【参考方案1】：

使用qMethod和quote参数到write.csv：

write.csv(my.text, stdout(), qmethod='escape', quote=TRUE)