这两天做quantile regression+绘图的时候遇到这样的问题:
我的代码是这样的:
. set more off
. save tempcf, replace emptyok
file tempcf.dta saved
.
. forvalues q = 0.05(0.05)0.95 {
2. quietly rifreg lgw parent age $Educ $Work $health if work == 1 & female==1, quantile(`q') w(0.06)
3. matrix B=e(b)
4. svmat double B, name(coef)
5. gen quant=`q'
6. keep quant coef*
7. keep if _n==1
8. append using tempcf
9. save tempcf, replace
10. }
然后报错:
(14859 observations deleted)
(label d40 already defined)
(label d38 already defined)
(label d37 already defined)
(label d28 already defined)
(label d26 already defined)
(label d25 already defined)
file tempcf.dta saved
new variables cannot be uniquely named or already defined
r(110);
我检查了,原来并没有coef* 或者quant变量在我的varlist里面,
但是我找不到already defined 的变量是那个QAQ
求助~~


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