MISSING:频率统计量中包含缺失值 NOCOL:强制在交叉表中不打印列百分比 NOROW:强制在交叉表中不打印行百分比 OUT=data-set:输出数据集 比如说,使用第二个选项: TABLESSex*YearsEducation/MISSING; 例子有一家咖啡店的销售数据,记录了销售的咖啡种类(cappuccino,espresso,kona,or iced coffee),以及每次购买的顾客是打...
Retain的作用是: 被 指定的变量的值不会被重置为missing值。 (1) TheRETAINstatement specifiesvariableswhose values are not set to missing at the beginning of each iteration of the DATA step. (2)TheKEEPstatement specifies variables that are to be included in anydata setthat is being created. 5....
OUTPUTOUT=data-set output-statistic-list; Data-set是要储存结果的数据集名,output-statistic-list则界定需要保存哪些统计量和名称,可能的形式为: statistic(variable-list)=name-list statistic可能是proc means语句中的任何一种统计量(sum,n,mean…),variable-list则界定VAR语句中哪些变量需要输出,name-list则定义...
If one of the data sets has a variable not contained in the other data sets, then the observations from the other data sets will have missing values for that variable. 横向合并中的 by variable list 是所有数据集共同的变量。 一、纵向合并 例一:合并两个数据集 southentrance 和 northentrance, ...
在DATA步中用以控制MERGE、SET或UPDATE语句的运行并建立特殊的组合变量。 (1)格式:BY [DESCENDING] [GROUPFORMAT] variable … [NOTSORTED]; (2)说明: DESCENDING指明数据集是按下降的次序对其后的变量值进行排序、GROUPFOR-MAT是当SAS给自动变量FIRST.和LAST.赋值时, 指明该...
THEN group="Missing"; ELSE IF variable1<5 THEN group="< 5"; ELSE group=.; IF variable2="B" THEN DO; variable3="B"; B_COUNT=1; END; ELSE DO; variable3="G"; G_COUNT=1; DROP variable2; RUN; PROC SQL; CREATE TABLE dataset4 AS SELECT ""||""||group AS KEY, "ALL" AS ...
下面给出比较合理科学的处理方法。注意到这里只有非空才参与计算,not missing函数以及cmiss函数,还有缩进的应用。 在进行字符型变量和数值型变量的计算也好,转换也好,一定要使用INPUT函数和PUT函数,并辅之best.等各种匹配格式,strip等函数去空格,否则,很容易出错,遗漏,得...
To flag */ /* missing values as errors set */ /* Missing=error */); data tmp; set &dsn(keep=&Idvar &Var); length Reason $ 10 Variable $ 32; Variable = "&Var"; Value = &Var; if &Var lt &Low and not missing(&Var) then do; Reason='Low'; output; end; %if %upcase(&...
I have a set of variables which goes like a94-a114 b94-b114 and so on. I want to set values of a94-a114 to .(dot) if its spaces. I was trying this: array var[21] a94-a114; do i=1 to 21; if var=' ' then var=.; end; But it says variable already exist.0...
Nparlway 过程对于缺失值(missing value)的处理如果缺失值出现在反应变量( 30、var 语句指定的变量),nparlway 过程会将该条记录排除在分析之外。默认情况下,nparlway 过程也会将分类变量中出现缺失值的记录排除出分析过程。如果指定选项“missing ”, nparlway 过程则将分类变量中出现的缺失值当作一个单独的水平...