求助! 红色部分为我的命令,为什么结果是no observation? 谢谢!
forvalues i = -30(1)30{
qui reg CAR_date if dif==i, robust
if i<0{
local j "neg‘=-i’"
}
else{
local j "i"
}
est store date_‘j’
}
. local m date_neg2 date_neg1 date_0 date_1 date_2
. esttab ‘m’, mtitle(‘m’) compress
Example generated by -dataex-. To install: ssc install dataex
clear
input float(day index aar car ar CAR_date datenum target td dif)
.006154 .011831 -.025647 -.025647 -.025647 -.025647 1 . 31 -30
.007645 .004125 -.015662 -.041309 -.005677 -.031324 2 . 31 -29
0 .002426 -.009268 -.050577 .00352 -.027804 3 . 31 -28
-.00607 -.003018 -.007558 -.058134 -.002426 -.03023 4 . 31 -27
.080916 .000633 -.006656 -.064791 -.003052 -.033282 5 . 31 -26
-.007062 -.007614 .007834 -.056957 .080283 .047001 6 . 31 -25
0 .004049 .006793 -.050164 .000552 .047553 7 . 31 -24
.02276 .001604 .005438 -.044726 -.004049 .043504 8 . 31 -23
-.009736 -.005207 .007184 -.037542 .021156 .06466 9 . 31 -22
-.005618 -.003627 .006013 -.031529 -.004529 .060131 10 . 31 -21
.018362 .004833 .005285 -.026243 -.001991 .05814 11 . 31 -20
-.006935 .002641 .005972 -.020271 .013529 .071669005 12 . 31 -19
.075419 -.000537 .004776 -.015494 -.009576 .062093 13 . 31 -18
.006494 -.007381 .009861 -.005634 .075956 .138049 14 . 31 -17
.003871 -.001239 .010128 .004495 .013875 .151924 15 . 31 -16
-.047558 .007552 .009815 .014309 .00511 .157034 16 . 31 -15
-.004049 .000712 .005996 .020305 -.05511 .101924 17 . 31 -14
.01355 .000751 .005398 .025703 -.004761 .097163 18 . 31 -13
.028075 .008383 .005787 .03149 .012799 .109962 19 . 31 -12
.010403 -.009632 .006483 .037973 .019692 .129654 20 . 31 -11
0 .004127 .007128 .045101 .020035 .149689 21 . 31 -10
-.014157 .003323 .00601 .05111 -.01748 .132209 22 . 31 -9
0 -.005025 .005967 .057077 .005025 .137234 23 . 31 -8
.016971 .001026 .006382 .06346 .015945 .153179 24 . 31 -7
-.016688 .006432 .005202 .068662 -.02312 .130059 25 . 31 -6
-.016971 -.000762 .004379 .073041 -.016209 .11385 26 . 31 -5
-.011952 -.004287 .003933 .076974 -.007665 .106185 27 . 31 -4
-.001344 -.003576 .003872 .080846 .002232 .108417 28 . 31 -3
-.012113 -.009588 .003651 .084497 -.002525 .105892 29 . 31 -2
.017711 .003824 .003993 .08849 .013887 .119779 30 . 31 -1
.100402 .005562 .006923 .095413 .09484 .214619 31 31 31 0
.099757 .00101 .009793 .105206 .098747 .313366 32 . 31 1
-.00885 -.000766 .009251 .114457 -.008084 .305282 33 . 31 2
-.066964 -.004925 .007154 .121611 -.062039 .243243 34 . 31 3
.002392 .018343 .006494 .128105 -.015951 .227292 35 . 31 4
-.00358 .009344 .005955 .134059 -.012924 .214368 36 . 31 5
-.001198 .000766 .005741 .1398 -.001964 .212404 37 . 31 6
-.016787 -.000475 .00516 .14496 -.016312 .196092 38 . 31 7
-.019512 -.000837 .004549 .14951 -.018675 .177417 39 . 31 8
-.00995 .001877 .00414 .153649 -.011827 .16559 40 . 31 9
.011307 .003702 .004224 .157874 .007605 .173195 41 . 31 10
-.019876 .001401 .003617 .161491 -.021277 .151918 42 . 31 11
-.001267 .000317 .003496 .164987 -.001584 .150334 43 . 31 12
.003807 -.005876 .003637 .168624 .009683 .160017 44 . 31 13
-.021492 -.000075 .00308 .171704 -.021417 .1386 45 . 31 14
-.02584 .003321 .002379 .174083 -.029161 .109439 46 . 31 15
.005305 .000909 .002422 .176505 .004396 .113835 47 . 31 16
-.013193 .001379 .002068 .178573 -.014572 .099263 48 . 31 17
0 -.003759 .002102 .180675 .003759 .103022 49 . 31 18
-.022727 -.005282 .001712 .182387 -.017445 .085577 50 . 31 19
.001368 .002755 .001651 .184037 -.001387 .08419 51 . 31 20
-.009563 -.001788 .00147 .185507 -.007775 .076415 52 . 31 21
-.005517 .002726 .001286 .186793 -.008243 .068172 53 . 31 22
.037448 -.002431 .002001 .188794 .039879 .108051 54 . 31 23
-.009358 -.001573 .001823 .190617 -.007785 .100266 55 . 31 24
-.031039 -.003275 .001295 .191912 -.027764 .072502 56 . 31 25
.019499 .000609 .001603 .193515 .01889 .091392 57 . 31 26
.020492 .000505 .00192 .195436 .019987 .111379 58 . 31 27
-.004016 -.001683 .001848 .197284 -.002333 .109046 59 . 31 28
-.002688 .002785 .001726 .19901 -.005473 .103573 60 . 31 29
-.01752 .007595 .001286 .200296 -.025115 .078458 61 . 31 30
end
[/CODE]
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