问题如下,
1.需要每天对变量进行排序,前三的标记为1,末三的标记为-1,都不是的为0
2.每个变量对应三个月度dummy variable,分别是上个月至少一次被标记为1从未被标记为-1的W=1,上个月至少一次被标记为-1从未被标记为1的L=1,上个月既标记为1又标记为-1的WL=1
我实际的数据有200多个月,命令要怎么写呢?
- * Example generated by -dataex-. To install: ssc install dataex
- clear
- input double(date1 re_c966 re_c967 re_c968 re_c969 re_c970 re_c971 re_c972 re_c973 re_c974 re_c975 re_c976 re_c977 re_c978)
- 17471 .9787234042553191 1 .9750130626259611 .9814814814814815 1 1 .9848484848484849 1 .9842257985230946 . 1 . 1.0083543018584735
- 17472 .9951690821256038 .975 1.0070623361212654 1 1 1 1 1 1.00764824056922 . 1 . 1.0260336292031942
- 17475 .970873786407767 .9846153846153847 .9920939602417425 .9716981132075472 1 1 .9846153846153847 .9810290387701227 .9906010379176546 . 1 . .9290649011708736
- 17476 1.0225 .9791666666666666 .9849622619822995 1 1 1 1 1 1.0200740829250807 . 1 . .9857248376343799
- 17477 .9853300733496333 1.0585106382978724 1.0062819689985802 .9902912621359223 1 1 .984375 1 .97781714888134 . 1 . .9748100464740666
- 17478 1.0173697270471465 .9798994974874372 .9830498647081563 .9607843137254902 1 1 1 .9935364727608496 .9985362603135622 . 1 . 1.005814995519267
- 17479 .9975609756097561 1 .9927255568881113 .9489795918367348 1 1 .9841269841269841 .9675252257036643 .9985341146389836 . 1 . .9768784524917339
- 17482 .980440097799511 .9897435897435898 .9881171647555107 .946236559139785 1 1.0227272727272727 .9838709677419355 .9463183028240525 .9963280293757649 . 1 . 1.0624574374939195
- 17483 1.0099750623441397 1 1.01388972400938 .9886363636363637 1 1 1 1.0354688089092545 1.002581359943323 . 1 . 1.0105225406708787
- 17484 1.002469135802469 1.005181347150259 1 1.0344827586206897 1.1176359872012045 1 1 .9657461348868474 1.0191017444155024 . 1 . 1.0085705008646013
- 17485 .9852216748768473 1 .9863005574664927 .9833333333333333 1 1 .9344262295081968 .9929236391055945 .9974772342520774 . .9680020478689364 . .9744994983753349
- 17486 1 1.0515463917525774 .9935061030605495 1 1 1 1 .9928439991821714 1.0072287731052665 . .9916699722332408 . .9968846035648434
- 17489 .97 .9803921568627451 .9972160019366944 .9717514124293786 1 1 1 .9568427865380089 .9795486083068407 . .9583999999999999 . .9943778443136846
- 17490 .9639175257731959 .975 .9953268192025248 .9418604651162791 1 1 .9298245614035088 .8947271329746349 1.0010980733123211 . 1.0434056761268782 . 1
- 17491 .9518716577540107 .9333333333333334 .9718292682926829 1 1 1 .8679245283018868 .991581045324903 .9732895584073315 . 1 . .9302305754698702
- 17492 .9775280898876404 .9725274725274725 1.0038691596603506 1.0617283950617284 1 1 1 1.0254366509564734 1.0097734904169025 . 1 . 1.0141889471184689
- 17493 1 1.0451977401129944 1.000958353299027 1.0406976744186047 .8947457056247895 1 1 1 1.0178722431722087 . .9583999999999999 . 1.0106591853835662
- 17496 1.0028735632183907 .9945945945945947 .9807680299719014 1 1 1 .9782608695652174 1.0165258533288275 1.0091422113448745 . 1 . .9828609981019888
- 17497 .9914040114613181 1 1.0009762101822968 1 1 1 1 .9593404036038432 .9894906643427956 . 1 . 1.0006698920729438
- 17498 .9942196531791907 1 1 1 1 1 1 1.0169808705295258 1.032964685512553 1.040625 1 . .9912889682303547
- 17499 1.005813953488372 .9891304347826087 1.008819725655649 1 1 1 1 1.0083145914264295 1.0070929190536486 .993993993993994 1 . .9939137249670673
- 17500 1.0173410404624277 .967032967032967 .9611626000882669 1 1 1 1 1.0082798242649544 1.0176056084328233 1.0030211480362539 1 . 1.0272120256350032
- 17503 .9857954545454546 .9772727272727273 1.0474691155570133 1 .8823640127987954 1 1 1.032780291603821 1.0017311634197026 .9759036144578314 1 . .9662246031227544
- 17504 .9769452449567724 1 .9315325846449296 1 1 .9777777777777778 1 1.238081329309058 .9972363389619662 .9938271604938271 1.0434056761268782 . .9849222447599728
- 17505 1.0235988200589972 .9941860465116279 .9896472908170125 .9776536312849162 1 .9772727272727273 1 1.076935175233951 1.0259766953957812 1.0062111801242235 1.0417333333333332 . 1.0215727328894078
- end
- format %td date1
- format %6.5f re_c966-re_c978


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