下面这份数据,时间变量(yw)不连续,请问如何使其连续,填补后的其他变量对应的数值用原数据中的临近的滞后一期或推后一期代替?谢谢老师!!
- * Example generated by -dataex-. To install: ssc install dataex
- clear
- input long stkcd float wretwd double yw
- 1 -.01214 2341
- 1 -.001536 2342
- 1 -.013846 2343
- 1 -.037441 2344
- 1 .069692 2345
- 1 0 2347
- 1 .006061 2348
- 1 -.042169 2349
- 1 -.037736 2350
- 1 -.031046 2351
- 1 -.089376 2352
- 1 .037037 2353
- 1 .2125 2354
- 1 -.023564 2355
- 1 -.098039 2356
- 1 .036789 2357
- 1 -.029032 2359
- 1 .031561 2360
- 1 -.009662 2361
- 1 -.052033 2362
- 1 .128645 2363
- 1 -.031915 2364
- 1 -.012559 2365
- 1 -.079491 2366
- 1 -.056995 2367
- 1 .03663 2368
- 1 .051237 2369
- 1 -.003361 2370
- 1 .048904 2371
- 1 -.003215 2372
- 1 -.037097 2373
- 1 .030151 2374
- 1 .017886 2375
- 1 -.001597 2376
- 1 .008 2377
- 1 -.071429 2378
- 1 -.015385 2379
- 1 .100694 2382
- 1 -.119874 2383
- 1 .021505 2384
- 1 -.02807 2385
- 1 .043321 2386
- 1 .017301 2387
- 1 -.008503 2388
- 1 .008576 2389
- 1 .022109 2390
- 1 .019967 2391
- 1 .043974 2392
- 1 -.031201 2393
- 1 .003221 2394
- 1 .019262 2395
- 1 -.022047 2397
- 1 .004831 2398
- 1 .126603 2399
- 1 -.069701 2400
- 1 -.055046 2401
- 1 .003236 2402
- 1 .017742 2403
- 1 .009509 2404
- 1 .015699 2405
- 1 .058733 2406
- 1 -.00146 2407
- 1 .152047 2408
- 1 .083756 2410
- 1 -.026932 2411
- 1 .056558 2412
- 1 -.190205 2415
- 1 .025316 2416
- 1 .037037 2417
- 1 .019841 2418
- 1 -.066148 2420
- 1 -.033333 2421
- 1 -.041667 2422
- 1 .022489 2423
- 1 .016129 2424
- 1 .008658 2425
- 1 .010014 2426
- 1 .024079 2427
- 1 .055325 2428
- 1 -.018349 2429
- 1 .089453 2430
- 1 .106618 2432
- 1 .00443 2433
- 1 .077178 2434
- 1 -.019447 2435
- 1 .077244 2436
- 1 -.003876 2437
- 1 .233463 2438
- 1 -.020505 2439
- 1 .057971 2440
- 1 .015982 2441
- 1 -.025468 2442
- 1 .112221 2443
- 1 -.097443 2444
- 1 .188361 2445
- 1 .092139 2446
- 1 .077876 2447
- 1 -.039956 2448
- 1 .048461 2449
- 1 .131049 2450
- end
- format %tw yw


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