Question

我正在尝试从供应商名称中删除某些子字符串。所以我放入一个宏并执行此操作：

 local item "BANKOFAMERICA"  " INC" " INCORPORATED" " SYS " " SYSTEMS" " PVT" " PRIVATE"    " LIMITED" " LTD" " LLC" " CORP" "LIMITED LIABILITY" "CORPORATION" " CORP " " COMPANY" " CO " " TECHNOLOGY" " TECH " " GLOBAL"
foreach v in `item' {
replace vendor = subinstr(vendor,"`v'","",.)
}

然而，这给我一个太少的引号错误。我尝试在“v”周围复合“”但这不起作用。知道我做错了什么/另一种方法来实现这个目标吗？

Answer 1

您的嵌套引号给您带来麻烦。可以通过在本地宏定义中添加一些compound double quotes和替换：

来修复代码

local item `" "BANKOFAMERICA"  " INC" " INCORPORATED" " SYS " " SYSTEMS" " PVT" " PRIVATE"    " LIMITED" " LTD" " LLC" " CORP" "LIMITED LIABILITY" "CORPORATION" " CORP " " COMPANY" " CO " " TECHNOLOGY" " TECH " " GLOBAL" "'

foreach v of local item {
    replace vendor = subinstr(vendor,`"`v'"',"",.)
}

或者，您可以避免定义本地宏，只需使用：

foreach v in "BANKOFAMERICA"  " INC" " INCORPORATED" " SYS " " SYSTEMS" " PVT" " PRIVATE"    " LIMITED" " LTD" " LLC" " CORP" "LIMITED LIABILITY" "CORPORATION" " CORP " " COMPANY" " CO " " TECHNOLOGY" " TECH " " GLOBAL" {
    replace vendor = subinstr(vendor,"`v'","",.)
}

这不像第一个版本那么清晰。

Answer 2

@Dimitriy V.Masterov的答案很好。这只是阐述了一个关键细节。

您可以通过

查看错误

. local item "BANKOFAMERICA"  " INC" " INCORPORATED" " SYS " " SYSTEMS" " PVT" " PRIVATE"    " LIMITED" " LTD" " LLC" " CORP" "LIMITED LIABILITY" "CORPORATION" " CORP " " COMPANY" " CO " " TECHNOLOGY" " TECH " " GLOBAL"

. mac li

第一个和最后一个"被剥离为标记宏的开头和结尾的分隔符。你必须先使用复合双引号来阻止它。到目前为止Stata关注的是“和”是匹配的字符（可以嵌套，虽然这里不需要）。

Stata子串错误

2 个答案: