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:]
