程序以DATA语句开头,为SAS数据集,视图或程序提供名字。 DATA <data-set-name-1 <(data-set-options-1)>> <... data-set-name-n <(data-set-options-n)>> </ <DEBUG> <NESTING> <STACK = stack-size>> <NOLIST>; SET<SAS-data-s...
SAS dataset 有很多针对数据集的选项(option),这些选项都有同名的 statement. 常见的有: options 和 statement 的功能和使用方法几乎一致,区别在于:statement 只能在 DATA step 中使用;options 在 DATA / PROC step 中都可以使用,既可以用于 read-in data 也可以用于 write-in data, 写法统一是DATA=dataset (opti...
SAS数据步 DATA STEP: A SASDATA stepisa group of SAS language elementsthat begins with aDATA statement and ends with aRUNstatement. The DATA statement isfollowed byother programming language elements such as moreDATA step statements,functions, data set options, formats, and informats. These language...
In merging data, the POINT option can be used to combine data sets in ways that exceeds the ability of the MERGE statement. When doing repetitive tasks with a macro, use of the POINT option can limit the number of macro variables. In general, the POINT option on the SET statement is a...
§1SAS数据步(DATASTEP)DATA步是用DATA语句开始的一组SAS语句。例1：DATAda1;INPUTx1x2x3;y=x1+x2+x3;CARDS;31.20.522.40.953.20.884.11.173.30.6;RUN;以上这些语句组成DATA步。提交后，SAS系统创建一个名为da1的SAS数据集。它包含5个观测、4个变量。卫生统计教研室 彭斌 Slide3 §2SAS数据集的...
SAS程序 从数据集data set读取观测值1,然后使用观测值1执行data step.执行完数据步data step后,然后SAS将当前的观测值1 写入到new,output data set。接着自动返回到data step的开始,继续处理下一个观测值observation2,3,4...n 。 (1)SAS reads observationnumber oneand(2)processes it using line one of t...
SAS reads the descriptor information of each data set that is named in the SET statement and then creates a program data vector that contains all the variables from all data sets as well as variables created by the DATA step.2：SAS reads the first observation from the first data set into ...
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 when the BY group changes...
1、SAS数据步导入数据终极汇总经典,一看就会 一、将数据录入SASDATA Step / Viewtable 1.Internal raw data- Datalines or Cards 命令; 2.External Raw data files- Infile 命令 + Input 命令;二、将数据文件读入SAS DATA Step / PROC IMPORT 1.将SAS文件读入SAS data sasuser.saslin; 2、; set "F:sas...
•数据集(Data Set):SAS中的数据存储在数据集中,每个数据集由变量和观测组成。 •数据步(Data Step):数据步是SAS程序中用来对数据进行处理的基本单位,包括数据导入、数据转换等操作。 •过程(Procedure):过程是SAS程序中用来进行数据分析的模块,比如描述统计、线性回归等。 •语句(Statement):语句是SAS程序的...