数据大致如下,年月日各一列,写if条件的时候感觉有点麻烦,不知道各位有没有什么好办法?
- * Example generated by -dataex-. To install: ssc install dataex
- clear
- input double v byte(r3 r4 r) float(k i) str4 md
- 7 . . 1 -863 7.9 "0101"
- 1.7 . . 1 -740 4 "0102"
- 1 . . 1 -643 3.5 "0103"
- 3.7 . . 1 -972 1.4 "0104"
- 2.3 . . 1 -872 -1.4 "0105"
- 0 . . . -376 -2.2 "0106"
- .7 . . 1 -580 2.4 "0107"
- 2.7 . . 1 -728 4.9 "0108"
- 4.7 . . 1 -713 7.8 "0109"
- 7 . . 1 -852 7.9 "0110"
- 6.7 . . 1 -820 8 "0111"
- 5 . . 1 -703 9.1 "0112"
- 3 . . 1 -647 7.9 "0113"
- 5.7 . . 1 -710 9.1 "0114"
- 3 . . 1 -845 -1.1 "0115"
- 2.3 . . 1 -777 -.3 "0116"
- 1.7 . . 1 -684 2.3 "0117"
- 4.7 . . 1 -846 4.6 "0118"
- 3.3 . . 1 -811 2.2 "0119"
- 3.7 . . 1 -938 -1.2 "0120"
- 4 . . 1 -979 -2.4 "0121"
- 6 . . 1 -1085 -1.1 "0122"
- 1 . . 1 -708 -2.8 "0123"
- 2 . . 1 -792 -.4 "0124"
- 3.7 . . 1 -1013 -3.6 "0125"
- .3 . . 1 -556 -2.4 "0126"
- 0 . . . -343 -1.5 "0127"
- .7 . . 1 -600 -.2 "0128"
- 2.7 . . 1 -802 .7 "0129"
- 1 . . 1 -621 .8 "0130"
- 2 . . 1 -676 4.1 "0131"
- .7 . . 1 -527 6.7 "0201"
- 2.7 . . 1 -714 6.1 "0202"
- 4 . . 1 -830 3.7 "0203"
- 3 . . 1 -825 3 "0204"
- .7 . . 1 -560 3.1 "0205"
- 3.7 . . 1 -697 6.4 "0206"
- 2.7 . . 1 -665 6 "0207"
- 6 . . 1 -714 9.6 "0208"
- 4 . . 1 -699 8.3 "0209"
- 4 . . 1 -685 8.3 "0210"
- 2 . . 1 -625 8.1 "0211"
- 2.7 . . 1 -624 9.5 "0212"
- 1.3 . . 1 -441 9.7 "0213"
- 4 . . 1 -583 9.6 "0214"
- 4.7 . . 1 -738 8.1 "0215"
- 1 . . 1 -618 2.1 "0216"
- 0 . . . -305 4.9 "0217"
- 3 . . 1 -687 5.6 "0218"
- 3.7 . . 1 -839 1.4 "0219"
- 1 . . 1 -521 6.8 "0220"
- 0 . . . -284 5.1 "0221"
- 3.7 . . 1 -725 6.6 "0222"
- 4.7 . . 1 -804 6.7 "0223"
- 4.7 . . 1 -861 7.1 "0224"
- 6.7 . . 1 -931 6 "0225"
- 4.3 . . 1 -873 4.8 "0226"
- 4.3 . . 1 -887 3.9 "0227"
- .3 . . 1 -514 2.7 "0228"
- 0 . . . -276 3.9 "0301"
- 0 . . . -349 1.1 "0302"
- 3.7 . . 1 -672 7.4 "0303"
- 1.7 . . 1 -433 11.4 "0304"
- 4.3 . . 1 -596 11 "0305"
- 3.3 . . 1 -584 10 "0306"
- 1.7 . . 1 -415 11.9 "0307"
- 3.7 . . 1 -743 7.3 "0308"
- 3.7 . . 1 -647 8.3 "0309"
- 1.3 . . 1 -416 10.8 "0310"
- 4.7 . . 1 -592 10.7 "0311"
- 1 . . . -337 12.5 "0312"
- 2.3 . . . -376 14.2 "0313"
- 5.7 . . 1 -467 14.2 "0314"
- 3.3 . . 1 -477 12.4 "0315"
- 2.3 . . . -399 13 "0316"
- 3 . . . -409 14.2 "0317"
- 2 . . . -345 14.2 "0318"
- 2.3 . . . -321 15.6 "0319"
- 5.7 . . 1 -610 11.3 "0320"
- 1 . . . -386 12.4 "0321"
- 5 . . 1 -526 13.1 "0322"
- 3 . . 1 -634 8.2 "0323"
- 6.3 . . 1 -629 11.3 "0324"
- 11.3 . . 1 -669 11.5 "0325"
- 3 . . 1 -524 9.9 "0326"
- 2.3 . . 1 -546 10.6 "0327"
- 1 . . 1 -461 9.9 "0328"
- .7 . . 1 -411 10.8 "0329"
- 3.7 . . 1 -639 8.9 "0330"
- 2.3 . . 1 -604 7.3 "0331"
- 1 . . 1 -480 8.5 "0401"
- 2.7 . . 1 -576 10.1 "0402"
- .7 . . 1 -443 8.9 "0403"
- 2.7 . . 1 -495 11.8 "0404"
- 3.7 . . 1 -436 15.1 "0405"
- 4 . . . -385 15.9 "0406"
- 4.7 . . 1 -510 14.4 "0407"
- 2 . . 1 -488 11.7 "0408"
- 1 . . . -317 14.6 "0409"
- 1.7 . . . -301 16.9 "0410"
- end