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SA S Fu n c t i o n sExample

Second Edition

Ron Cody

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Summary

Examination of SAS Functions and Calls inthe SAS programming LanguageOrganized into Chapters of related categories(such as character or statistics functions)Update of earlier version to include SASfeatures found in SAS 9.2

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Summary

SAS FunctionsComputation or manipulation returning a singlevalue in the format: Value=name(arguments) ;

SAS Calls Stand alone SAS statementMay return more than a single value.

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The Author Ron Cody

Has worked with SAS since 1977

Retired professor from Robert WoodJohnson Medical School.

Private consultant and instructor for SAS

Author of many SAS

programming books.Presented at Many SUGI/SGFExcellent presentations

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Strengths

It fills the intended purpose by covering manyof the most used functions within SASIt is easy to follow and has many relevantexamplesLayout into categories and groups is welldone and thoughtful

Has a useful list of functions althoughsome functions seem to be missing.

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Weaknesses

I can not keep my copy on my desk.You need to have an idea of what you wantto accomplish.It does not go much beyond what can befound in the SAS manuals

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Recommend?

This book is an excellent resource for anyoneworking within the SAS datastep forcalculations and manipulation.

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Learning & Tips

Character Functions

COMPRESS(string, compress -list, modifiers)

Regularly used function for compressing outcharacters. Now has modifiers to identify wholegroups of charcters (e.g. d digits, a letters, s allspace characters.

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Learning & Tips

Character Functions

CATS(string-1, ) or

CALL CATS(result, string-1 )Concatenate the listed strings into one variable resultstripping both leading and trailing blanks.Reminder use of length statement or $200

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Learning & Tips

Character Functions

COUNTW(string, ,

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Learning & Tips

Character Functions

NOTDIGIT(string )

Identify location of any non-digit in a stringRelated functions include anydigit, anyalpha,nonalpha, anyspace, anypunct , etc

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SAS regular expressions dropped in this

edition.Basic tutorial or overview in the manual. An Introduction to Perl Regular Expressions in SAS 9, RonaldCody, SUGI 29 Perl Regular Expressions, Kenneth Borowaik, SAS Global Forum2007 .Some Simple Perl Regular Expressions Examples in SAS 9,Selvaratnam Sridharma, SAS Global Forum 2010.

Learning & Tips

Perl Regular Expressions

http://www2.sas.com/proceedings/sugi29/265-29.pdfhttp://www2.sas.com/proceedings/sugi29/265-29.pdfhttp://www2.sas.com/proceedings/forum2007/135-2007.pdfhttp://www2.sas.com/proceedings/forum2007/135-2007.pdfhttp://www2.sas.com/proceedings/forum2007/135-2007.pdfhttp://support.sas.com/resources/papers/proceedings10/089-2010.pdfhttp://support.sas.com/resources/papers/proceedings10/089-2010.pdfhttp://support.sas.com/resources/papers/proceedings10/089-2010.pdfhttp://support.sas.com/resources/papers/proceedings10/089-2010.pdfhttp://support.sas.com/resources/papers/proceedings10/089-2010.pdfhttp://support.sas.com/resources/papers/proceedings10/089-2010.pdfhttp://support.sas.com/resources/papers/proceedings10/089-2010.pdfhttp://www2.sas.com/proceedings/forum2007/135-2007.pdfhttp://www2.sas.com/proceedings/forum2007/135-2007.pdfhttp://www2.sas.com/proceedings/forum2007/135-2007.pdfhttp://www2.sas.com/proceedings/forum2007/135-2007.pdfhttp://www2.sas.com/proceedings/forum2007/135-2007.pdfhttp://www2.sas.com/proceedings/sugi29/265-29.pdfhttp://www2.sas.com/proceedings/sugi29/265-29.pdf

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CONSTANT(constant) Returns a constant value PI, e, EULER,EXACTINT.

RAND(distribution )Generates random numbers based on many (21+)

distributions. Can be used in place of otherrandom functions.Use the Call STREAMINIT to start with a knownseed.

Learning & Tips

Math and Numeric and Other

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GEODIST(lat-1, long-1, lat-2, long-2 )

Distance (straight line) between two sets of lat andlong co-ordinates.Options allow:

m returns miles

k returns kilometers (this is the default)d locations in degrees (default)r locations are in radians

Learning & Tips

Other

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Other Books

The Little SAS Book: A primer by Delwicheand Slaughter.

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Questions?