摘要: The APPEND procedure adds the observations from one SAS data set to the end of another SAS data set.[阅读全文]

摘要: Subscripted variables can be used to easily read groups of values in the input statement. The followi[阅读全文]

摘要: Symbol statements (symbol, symbol1,..., symbol255) are used to control some of the behavior of the pl[阅读全文]

摘要: Up to 10 title lines can be placed on printouts generated by SAS by using title statements. Each titl[阅读全文]

摘要: To correct errors in large data sets the update statement can be used: data new; update old changes;[阅读全文]

摘要: The where statement can be used with any procedure to restrict the action of that procedure to observ[阅读全文]

摘要: The X command can be used to execute operating system commands without leaving SAS. The form is X 'o[阅读全文]

摘要: The SAS array statement is used to easily tag variables in a data set for processing. The array state[阅读全文]

摘要: The @ symbol at the end of an input statement in the data step tells SAS that not to move to the next[阅读全文]

摘要: Used in conjunction with a SAS procedure, the by statement specifies variables in the data set which[阅读全文]

摘要: The cards statement specifies that the values of the variables appearing in the input statement are t[阅读全文]

摘要: SAS data sets are stored on disk in groups called a data catalog or library. When a data set is creat[阅读全文]

摘要: A character variable takes values which consists of letters or words. Numeric variables take number v[阅读全文]

摘要: The command prompt can be used to issue commands to the underlying operating system, via the X comman[阅读全文]

摘要: The continue statement can be used in a do loop to branch to the bottom of the inner most enclosing d[阅读全文]

摘要: The data statement is the first line of a SAS data step program. The data statement is used to give a[阅读全文]

摘要: SAS programs consist of two parts. The datastep is the part in which raw data is put into a SAS data[阅读全文]

摘要: The display manager governs the appearance of the screen during a SAS session. The display manager is[阅读全文]

摘要: Do-loops are used to repeat a sequence of operations. Here is an example. Each row of data in the fil[阅读全文]

摘要: Used in the datastep, the drop statement drops variables from the data set. Example: data score; infi[阅读全文]