sas試題課筆記三(編輯修改稿)
2025-07-04 13:38 本頁面
【文章內(nèi)容簡介】 =1 and id2=1 and id3=1。run。data (keep=date clpr0 clpr1 clpr2 clpr3 )。merge (rename=(clpr=clpr0)) (rename=(clpr=clpr1)) (rename=(clpr=clpr2)) (rename=(clpr=clpr3)) (in=id)。by date。if id=1。run。data ?！镞@里是老師的方法〓merge （keep=date clpr rename=(clpr=clpr0)in=id0）（keep=date clpr rename=(clpr=clpr1)in=id1）（keep=date clpr rename=(clpr=clpr2)in=id2）（keep=date clpr rename=(clpr=clpr3)in=id3）。 by date。if id0 and id1 and id2 and id3。run?！铩锏谝活}〓data (keep=date prevclpr oppr clpr color fluctuate)。informat color $6.?！锢蠋熂拥哪J(rèn)長度是多少呢？〓set 。fluctuate=(clprprevclpr)/prevclpr?！锟梢苑旁趇f語句后〓if opprclpr then color=39。red39。if opprclpr then color=39。green39。run?！飅f還可以寫成這樣：if opprclpr then color=39。red39。 else color=39。green39?！锏诙}〓data ?！?〓set 。where tvolume100000。run。data 。set 。by date。if then num=0。num+1。if 。keep date num。if num5 then delete。run。data 。merge (in=id1) (in=id2)。by date。if id1=1 and id2=1。run。proc sort data=?！锢蠋煹淖龇ń釉诘谝徊胶蟆y date。run。
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