Another commom task is value conversion between standard SDTM variables, such as map VISITNUM by VISIT based on code lists. Of course, it is definitely ok that if we use “if…then/else”statement to complete this task. But I think we apply u...
SAS数据清理与分析技术指南说明书
The values ofautomatic macro variablesare always stored in theglobal symbol table(意味着你总可以引用到这些宏) The values ofuser-defined macro variablescan reside either in a macro symbol table local or in the global symb...
var sbc variablesinmodel; run; /* 取最小的SBC*/ procsqlnoprint; select NumberOfVariables into :nv from subset having sbc=min(sbc); quit; %put &nv; datasbc; set subset; where NumberOfVariables=&nv; run; 注:后续应该用全模型法等方法都跑一遍,选出多个模型,然后再用验证数据验证一下。 1....
*Create summary variables by exercise type; PROC SQL; CREATE TABLE shoesums AS SELECT *, SUM(Sales) AS TotalByType, (Sales/SUM(Sales))*100 AS PercentByType FROM athshoes.shoesales GROUP BY ExerciseType; QUIT; *Create summary variables for whole data set; ...
SAS新手,执行SAS程序时总是遇到问题,例如我运行下面的代码: data a; input x; cards; 5.3 5.3 5.2 2.1 3.0 3.3 2.8 3.4 2.3 4.8 ; proc means data=a; var x; run; 然后就会出现这样的log: 18 data a; 19 input x; 20 cards; NOTE: The data set WORK.A has 10 observations and 1 variables....
说明:(a)“options”一般选项为：(i)以DATA=SASdatasetname指定所分析的SAS数据集名称；(ii)指定欲计算的特征数字名称（关键词，由SAS系统规定），包括N,MEAN,STD,VAR,MIN,MAX,RANGE,SUM,USS,CSS,SKEWNESS,KURTOSIS等。(b):“variables”指定要计算前面所列数字特征的SAS数据集中的变量名称（须是数值型变量）。
(v1,v2,v3,v4,v5); /* Get Minimum value */ min_val = MIN (v1,v2,v3,v4,v5); /* Get Median value */ med_val = MEDIAN (v1,v2,v3,v4,v5); /* Get a random number */ rand_val = RANUNI(0); /* Get Square root of sum of the values */ SR_val= SQRT(sum(v1,v2,v3,...
DATA array_example_OF; INPUT A1 A2 A3 A4; ARRAY A(4) A1-A4; A_SUM = SUM(OF A(*)); A_MEAN = MEAN(OF A(*)); A_MIN = MIN(OF A(*)); DATALINES; 21 4 52 11 96 25 42 6 ; RUN; PROC PRINT DATA = array_example_OF; RUN; ...
1.1:Automatic Macro Variables (用来创建脚注十分好) Automatic macro variablescontain information about your computing environment, such as the date and time of the session, and the version of SAS you are running. 性质:sas系统启动时创建,全局的,通常由sas赋值,有时可以由用户自己赋值 ...