Handbook of SAS DATA Step Programming

By (author) Li, Arthur

To write an accomplished program in the DATA step of SAS(R), programmers must understand programming logic and know how to implement and even create their own programming algorithm. Handbook of SAS(R) DATA Step Programming shows readers how best to manage and manipulate data by using the DATA step. The book helps novices avoid common mistakes resulting from a lack of understanding fundamental and unique SAS programming concepts. It explains that learning syntax does not solve all problems; rather, a thorough comprehension of SAS processing is needed for successful programming. The author also guides readers through a programming task. In most of the examples, the author first presents strategies and steps for solving the problem, then offers a solution, and finally gives a more detailed explanation of the solution. Understanding the DATA steps, particularly the program data vector (PDV), is critical to proper data manipulation and management in SAS. This book helps SAS programmers thoroughly grasp the concept of DATA step processing and write accurate programs in the DATA step. Numerous supporting materials, including data sets and programs used in the text, are available on the book's CRC Press web page.

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[目次]

  • Introduction to SAS SAS Program and Language Reading DATA into SAS Creating and Modifying Variables Base SAS Procedures Subsetting Data by Selecting Variables Changing the Appearance of Data Creating Variables Conditionally The IF-THEN/ELSE Statement Executing One of Several Statements Modifying the IF-THEN/ELSE Statement with the Assignment Statement Understanding How the DATA Step Works DATA Step Processing Overview Retaining the Value of Newly Created Variables Conditional Processing in the DATA Step Debugging Techniques BY-Group Processing in the DATA Step Introduction to BY-Group Processing Applications Utilizing BY-Group Processing Writing Loops in the DATA Step Implicit and Explicit Loops Utilizing Loops to Create Samples Using Looping to Read a List of External Files Array Processing Introduction to Array Processing Functions and Operators Related to Array Processing Some Array Applications Applications That Use Multi-Dimensional Arrays Combining Data Sets Vertically Combining Data Sets Horizontally Combining Data Sets Data Input and Output Introduction to Reading and Writing Text Files Reading Text Files Creating Text Files Data Step Functions Introduction to Functions and CALL Routines Date and Time Functions Character Variables Functions for Converting Variable Types Useful SAS Procedures Using the SORT Procedure to Eliminate Duplicate Observations Using the COMPARE Procedure to Compare the Contents of Two Data Sets Restructuring Data Sets Using the TRANSPOSE Procedure Creating the User-Defined Format Using the FORMAT Procedure Using the OPTIONS Procedure to Modify SAS System Options References Exercises appear at the end of each chapter.

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この本の情報

書名 Handbook of SAS DATA Step Programming
著作者等 Li, Arthur
出版元 Taylor & Francis Ebooks
刊行年月 2013.05.10
ページ数 275p
ISBN 9781466552395
言語 英語
出版国 イギリス
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