Stata子串错误

我正在尝试从供应商名称中删除某些子字符串。因此，我放入一个宏并执行以下操作：

 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，这给了我一个太少的错误。我试着在“v”附近复合“”但没用。你知道我做错了什么吗？

你的嵌套引号给你带来了麻烦。通过在本地宏定义和替换中添加一些代码，可以修复代码：

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'","",.)
}

---

这不像第一个变体那么清晰。

嵌套的引号给您带来了麻烦。通过在本地宏定义和替换中添加一些代码，可以修复代码：

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'","",.)
}

---

这不像第一个变体那么清晰。

迪米特里·V·马斯托夫的回答很好。这只是阐明了一个关键细节

你可以通过去看你的错误

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

. mac li 

---

发生的情况是，第一个和最后一个

“

被剥离为标记宏开始和结束的分隔符。必须首先使用复合双引号来停止此操作。就Stata而言，“”和“”是匹配的字符（可以嵌套，尽管此处不需要）.

由@Dimitry V.Masterov给出的答案很好。这只是阐明了一个关键细节

你可以通过去看你的错误

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

. mac li 

---

发生的情况是，第一个和最后一个

“

被剥离为分隔符，用于标记宏的开始和结束。你必须先用双引号来停止。就Stata而言，“”和“”是匹配字符（可以嵌套，尽管这里不需要）

这对你有用吗？对你有用吗？