请问如何对除了自己(目标公司)之外的同行披露的盈利预测的披露数量进行加总,原文意思是[size=10.2857pt]用同行企业披露业绩预告( 包括年度业绩预告[size=10.2857pt]和季度业绩预告) 数量的均值来表示[size=10.2857pt]。求问如何编写代码。其中PubliDate是业绩预告发布日,accper是业绩预告披露所属会计期间 ind是行业代码
----------------------- copy starting from the next line -----------------------
* Example generated by -dataex-. To install: ssc install dataex
clear
input long StockCode int PubliDate float accper str3 ind
6 21287 21274 "K"
6 21378 21365 "K"
6 22383 22370 "K"
6 22475 22461 "K"
7 21580 21549 "K"
7 21837 21822 "K"
7 21931 21914 "K"
7 21931 21914 "K"
7 22020 22005 "K"
7 22111 22096 "K"
7 22203 22188 "K"
7 22385 22370 "K"
7 22476 22461 "K"
7 22568 22553 "K"
7 22672 22645 "K"
8 21580 21549 "C37"
8 22111 22096 "C37"
8 22203 22188 "C37"
8 22385 22370 "C37"
8 22476 22461 "C37"
8 22568 22553 "C37"
10 21473 21457 "E"
10 21579 21549 "E"
10 21837 21822 "E"
10 21935 21914 "E"
10 22385 22370 "E"
11 21286 21274 "K"
11 21376 21365 "K"
11 21467 21457 "K"
11 22015 22005 "K"
11 22474 22461 "K"
11 22566 22553 "K"
12 22385 22370 "C30"
12 22467 22461 "C30"
12 22568 22553 "C30"
14 21284 21274 "K"
14 21572 21549 "K"
14 21651 21639 "K"
14 21741 21730 "K"
14 21937 21914 "K"
14 22111 22096 "K"
14 22201 22188 "K"
14 22384 22370 "K"
14 22476 22461 "K"
14 22567 22553 "K"
14 22672 22645 "K"
16 21651 21639 "C39"
16 22020 22005 "C39"
16 22111 22096 "C39"
16 22385 22370 "C39"
16 22568 22553 "C39"
16 22670 22645 "C39"
17 22385 22280 "C37"
17 22385 22280 "C37"
17 22475 22461 "C37"
17 22568 22553 "C37"
18 21290 21274 "E"
18 21579 21549 "E"
18 21655 21639 ""
18 21837 21822 ""
19 21580 21549 "C15"
19 21837 21822 "F"
19 22385 22370 "F"
20 22476 22461 "C39"
20 22568 22553 "C39"
21 22203 22188 "C39"
21 22309 22280 "C39"
23 21742 21730 "C30"
23 21837 21822 "C30"
23 21935 21914 "C30"
23 22020 22005 "C30"
23 22111 22096 "C30"
23 22203 22188 "C30"
23 22385 22370 "C30"
23 22476 22461 "C30"
23 22568 22553 "C30"
25 21616 21549 "F"
25 21837 21822 "F"
25 22020 22005 "F"
25 22110 22096 "F"
25 22308 22280 "F"
25 22384 22370 "F"
25 22474 22461 "F"
25 22567 22553 "F"
25 22670 22645 "F"
26 21579 21549 "F"
26 22371 22370 "F"
26 22565 22553 "F"
27 21837 21822 "D"
27 21929 21914 "D"
27 22035 22096 "D"
27 22111 22096 "D"
27 22153 22188 "D"
27 22203 22188 "D"
27 22305 22280 "D"
27 22385 22370 "D"
29 22384 22370 "K"
29 22399 22461 "K"
30 22385 22370 "C36"
31 21371 21365 "K"
end
format %tdnn/dd/CCYY PubliDate
format %tdnn/dd/CCYY accper
复制代码
------------------ copy up to and including the previous line ------------------