data animals (RENAME = (Class = Type Habitat = Home)); set animals; 例2学生成绩数据(c:\MyRawData\tests.txt),包含变量Name, Subject, Gender, Exam1, Exam2, Homework: 读入数据,创建新数据集,舍弃变量Subject和Homework,重命名变量Name为Student Name. 代码: data Test; infile 'c:\MyRawData\test...
6.1 使用SET语句复制数据集 SET语句可以复制数据集。基本形式为: DATA new-data-set; SET data-set; Data语句指定了新数据集名,set指定要读取的老数据集名。如果不想创建新的,则也可以在data中指定老数据集。 下面的代码创建了一个Friday的新数据集,将sales数据集中的day属于Friday的观测值复制,并创建了新变量t...
Kai Cao *** Date: 10Sep2021 *** Study: all study *** Version: 1.0 *** Input dataset: dataset len *** Output : __len_list *** Description: Use SAS Macros to set uniform lengths for data set variables dataset: required. Data set whose length needs to be modified. such as td...
三、Data-set Options(最常用的帮助处理数据集的选项) 1KEEP=variable-list;2DROP=variable-list;3RENAME=(oldvar=newvar);4FIRSTOBS=n;5OBS=n;6LABEL=‘data-set-label’;7IN=new-var-name;*creating a temporary variablefortracking whether that data set contributed to the current observation;8WHERE=co...
* Transpose data so salary and batavg are variables; proctransposedata= baseballOUT= flipped; byTeam Player; idType; varEntry; procprintdata= flipped; title'Baseball Data After Transposing'; run; 运行结果:(相当于将红圈的四个值转置,同时两行并一行) 程序说明: (1)“byTeam Player”指定原Team列...
对于带by的set data1-datan 1:基于前面的描述增加 SAS creates the FIRST.variable and LAST.variable for each variable listed in the BY statement 2:清空变量的方式有不同,The values of the variables in the program data vector are set to missing each time SAS starts to read a new data set and...
Sas分为两个步骤:data步和proc步分别进行数据管理与统计分析 三个窗口:pgm/log/output---快捷键对应f5 f6 f7 Log提示:红色--错误 蓝色--正常 绿色--警告、 编辑命令:clear/Ctrl+e---清除 Recall/f4 -- Submit/f8 Home 注意1:一个完整的SAS程序必须以RUN语句结尾方能提交运行 X1-xn...
问在SAS中获取多个变量的中位数和第95个百分位数统计信息EN在C语言编程中，获取数组的中位数是一项...
1.Create temporary and permanent SAS data sets. 2.Investigate SAS data libraries using base SAS utility procedures. 3.Access data. 4.Combine SAS data sets. 5.Create and manipulate SAS date values. 6.Control which observations and ...
(2)TheKEEPstatement specifies variables that are to be included in anydata setthat is being created. 5. 如果 retain语句 后面不跟任何变量,则: 会将所有由input和 赋值语句“=”创建的变量 都会retain其值,在data步的迭代中。 6. 默认情况下,如果不使用 RETAIN 语句, SAS会自动将由 input 和 赋值语句...