TAILIEUCHUNG - SAS/ETS 9.22 User's Guide 17

SAS/Ets User's Guide 17. Provides detailed reference material for using SAS/ETS software and guides you through the analysis and forecasting of features such as univariate and multivariate time series, cross-sectional time series, seasonal adjustments, multiequational nonlinear models, discrete choice models, limited dependent variable models, portfolio analysis, and generation of financial reports, with introductory and advanced examples for each procedure. You can also find complete information about two easy-to-use point-and-click applications: the Time Series Forecasting System, for automatic and interactive time series modeling and forecasting, and the Investment Analysis System, for time-value of money analysis of a variety of investments | 152 F Chapter 4 Date Intervals Formats and Functions TIME returns the current time of day. TIMEPART datetime returns the time part of a SAS datetime value. TODAY returns the current date as a SAS date value. TODAY is another name for the DATE function. WEEK date descriptor returns the week of year from a SAS date value. The algorithm used to calculate the week depends on the descriptor which can take the value U V or W . If the descriptor is U weeks start on Sunday and the range is 0 to 53. If weeks 0 and 53 exist they are only partial weeks. Week 52 can be a partial week. If the descriptor is V the result is equivalent to the ISO 8601 week of year definition. The range is 1 to 53. Week 53 is a leap week. The first week of the year Week 1 and the last week of the year Week 52 or 53 can include days in another Gregorian calendar year. If the descriptor is W weeks start on Monday and the range is 0 to 53. If weeks 0 and 53 exist they are only partial weeks. Week 52 can be a partial week. WEEKDAY date returns the day of the week from a SAS date value. For example weekday weekday 17OCT1991 D returns 5 the numerical value for Thursday. YEAR date returns the year from a SAS date value. YYQ year quarter returns a SAS date value for year and quarter values. References National Retail Federation 2007 National Retail Federation 4-5-4 Calendar Washington DC NRF. Technical Committee ISO TC 154 D. E. Processes Documents in Commerce I. and Administration 2004 ISO 8601 2004 Data Elements and Interchange Formats-Information InterchangeRepresentation of Dates and Times 3rd Edition Technical report International Organization for Standardization. Chapter 5 SAS Macros and Functions Contents SAS Macros. 153 BOXCOXAR Macro. 154 DFPVALUE Macro . 157 DFTEST Macro. 158 LOGTEST Macro. 160 Functions. 162 PROBDF Function for Dickey-Fuller Tests. 162 References . 167 SAS Macros This chapter describes several SAS macros and the SAS function PROBDF that are provided with SAS ETS software. A SAS

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