IF Time_of_Death < '01JUL2023'd then Cohort = 1; IF Time_of_Death > '01JUL2023'd then Cohort = 2; else cohort = 3; run However, when I look at the results, I get only cohorts 2 and 3 (if missing), but the dates that should be a "1" are a "2". What am I doing ...
DATA TEMP; SET OLDDATA; IF AGE>=20; PROC PLOT; PLOT INCOME*AGE; RUN; PROC PLOT; PLOT INCOME*YRS_EDUC; RUN; 如果在%THEN从句中有多个语句, 使用%DO-%END组,如: %MACRO analyze(getdata,yvar,xvar); TITLE; %IF &getdata=yes %THEN %DO; %create ...
I tried a series of nested if-then do statements. For example: data want; set have; if var1 ne '.' then do; if var2 ne '.' then do; if var1 ne var2; end; end; run; I might have gotten a variation (not exactly like the example above) to maybe work. Given the volume of...
One of the nice properties of an MLE formulation is that you can compare a large model with a nested submodel in a natural way. For example, if you can Read More EnglishAnalytics | Learn SAS | Programming Tips Rick WicklinMarch 20, 2024 Maximum likelihood estimates for linear ...
(1)简单DO语句 格式为∶DO; 常用在IF-THEN/ELSE语句里指定一个语句组是否被执行。如∶ IF x5 THEN DO; y=x*10; PUT x= y=; END; z=x+3; 这些语句表明DO与END之间的两句仅当x5时被执行,否则,跳到赋值语句z=x+3去执行。 (2)循环DO语句 格式为∶DO 下标变量=初值 [TO 终值 [BY 增量] [...
15、iables;run; RSREG岭 嵴分析PROC SORT;BY X1 X2 X3;PROC RSREG;MODEL Y=X1 X2 X3/LACKFIT;RUN;DATA B;*-GET THE ACTUAL VALUES-;SET A END=EOF;OUTPUT;*-CREATE AN X1*X2 GRID FOR PLOTTING-;IF EOF THEN DO;Y=.;X3=1.77;DO X1=-1.5 TO 1.5 BY .1;DO X2=-2 TO 2 BY .1;OUTP...
6. 18 Correct answer: d You do not need to name the variables in a VAR statement if you specify them in the SUM statement, but you can. If you choose not to name the variables in the VAR statement as well, then the SUM statement determines the order of the variables in the output...
IF 表达式 THEN 当表达式的值为真时执行其后的SAS语句。 (4)RUN; 执行前面的语句。 (5)多向选择语句 格式: SELECT[(表达式 0)」; WHEN(表达式1)语句1; WHEN(表达式2)语句2; ... WHEN(表达式 n)语句n ... (6) DELETE语句 格式: DELETE; 语句...
③IN=变量名 在SET, MERGE或UPDATA语句里规定一个新变量的名字,其取值指示观测从哪个数据集得到。如: MERGE ONE(IN=A) TWO; 即当前观测取自ONE时, 则A=1,这一信息可用于DATA步中间的程序语句(如: IF A=1 THEN …), 但此变量不进入正被创建的SAS数据集中;...
While both tests in this example could be completed in a single statement, they are separated to represent the kind of nested logic common in actual data processes. %macro testdata; %if %sysfunc(libref(test))=0 %then %do; %if %sysfunc(exist(test.states)) %then %do; data x; set ...