解答：在扫描功能中指定引用选项解决了问题
我在制表符分隔的文本文件中有一个数据集，其中包含名称，地址和属性信息。我试过了
land <- as.data.frame(scan(paste0(dirdata, "land.txt" ),what=list(CFullName="", CAddr1= "", CAddr2="", Amount="",CDate= "", Financer= "", Filing="", Sched= "", Office="", Dist= "", County= "", Municipality= ""), sep = "\t" , flush = TRUE, multi.line=TRUE, skip= 20, na.strings = "NA"))
在下面的数据中，每次观察应该只有三行。第一个是名称，第二个是街道地址，第三个是城市，包含剩余的变量。
MORRIS, WILLIAM
1111 POLARIS PKWY OH1-1213
COLUMBUS, OH 43240 12.00 15-MAY-12 J. P. MORGAN CHASE & CO. 2012 July A N/A N/A N/A N/A
JACOBS, WILLIAM
3477 COURTLAND DRIVE
LEWIS CENTER, OH 43035 12.00 30-SEP-09 J. P. MORGAN CHASE & CO. 2009 11 A N/A N/A N/A N/A
MARTIN, WILLIAM
3477 COURTLAND DRIVE
LEWIS CENTER, OH 43035 12.00 31-DEC-09 J. P. MORGAN CHASE & CO. 2010 January A N/A N/A N/A N/A
MICHAELS, WILLIAM
1111 POLARIS PKWY OH1-1213
COLUMBUS, OH 43240 12.00 15-AUG-12 J. P. MORGAN CHASE & CO. 2012 A N/A N/A N/A N/A
BROWN, WILLIAM
1111 POLARIS PKWY OH1-0213
COLUMBUS, OH 43240 12.00 31-JUL-13 J. P. MORGAN CHASE & CO. PAC 2013 32 A N/A N/A N/A N/A
BAXTER, WILLIAM
3477 COURTLAND DRIVE
LEWIS CENTER, OH 43035 12.00 15-AUG-09 J. P. MORGAN CHASE & CO. PAC 2009 11 A N/A N/A N/A N/A
我的代码正确地读取了前2,517个观察值，但是当基于txt文件应该至少有12,000个观察值时停止。我的代码给出的错误是：
EOF within quoted stringnumber of items read is not a multiple of the number of columnsRead 2517 records
谢谢！