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- HOW TO EXECUTE A SAS PROGRAM THROUGH EXCEL VBA ON WINDOWS HOW TO
- HOW TO EXECUTE A SAS PROGRAM THROUGH EXCEL VBA ON WINDOWS CODE
HOW TO EXECUTE A SAS PROGRAM THROUGH EXCEL VBA ON WINDOWS CODE
The examples below all demonstrate this technique, and are also adapted from several queries available in the sample database:Īdapted from "qrySet1_SQL_CorrCov_Code": SELECT Code, Avg(X * Y) - Avg(X) * Avg(Y) AS Covariance FROM Set1 GROUP BY Code Adapted from "qrySet1_SQL_CorrCov_Sect": SELECT Section, Avg(X * Y) - Avg(X) * Avg(Y) AS Covariance FROM Set1 GROUP BY Section Adapted from "qrySet1_SQL_CorrCov_SectCode": SELECT Section, Code, Avg(X * Y) - Avg(X) * Avg(Y) AS Covariance FROM Set1 GROUP BY Section, Code įor users accustomed to writing complex SQL statements in Access, none of those queries are particularly difficult. To get these subset results, simply modify the query to include the subset columns in the SELECT clause, and to use a GROUP BY clause with those subset columns. Thus, we may want to compute the covariances in such subsets as for each Code value, each Section value, or the combination of Code and Section The concluding sections of this article will contain:
HOW TO EXECUTE A SAS PROGRAM THROUGH EXCEL VBA ON WINDOWS HOW TO
The next two sections will take covariance and correlation in turn, and demonstrate how to perform the computations first using native Jet SQL, and then using the new Visual Basic for Applications (VBA) functions that provide "domain aggregate"-like capabilities for covariance and correlation and are included with this article. This article addresses that gap by demonstrating how to use Microsoft Access to calculate the covariance and correlation between a pair of columns.
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However, none of these statistics tell us anything about how a paired columns of data relate to each. In a recent article, I described how to extend that list to include the median, mode, skewness, and kurtosis statistics. In addition to these typical aggregate functions, Access also offers the so-called "domain aggregate" counterparts for each of the aggregates already mentioned.
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provides functions for computing several common descriptive aggregate statistics for column data, offering such aggregate functions as Count, Sum, Min, Max, standard deviation and variance (StDev, StDevP, Var, and VarP), and average (Avg). 'Assign a libref using the DataService AssignLibref method. 'ls.FlushLogLines 8192, carriageControls, lineTypes, logLinesįunction AssignLibref(workspace As workspace, libraryName As String, path As String) 'Dim lineTypes() As LanguageServiceLineType 'Dim carriageControls() As LanguageServiceCarriageControl 'Could use FlushLogLines to get log instead 'if we submit asynchronously, we'd have to add a sink and wait to retrieve the log until signalled Set ConnectToServerUsingObjectFactory = obSASįunction SubmitCode(workspace As workspace, code As String) As String MsgBox obObjectFactory.GetCreationLog(False, True) Set obSAS = obObjectFactory.CreateObjectByLogicalName("SASApp - Logical Workspace Server", "") ' Use the SAS Object Manager to establish a SAS workspace object. Set obObjectFactory = CreateObject("SASObjectManager.ObjectFactoryMulti2") 'Requires reference to "SAS: Integrated Object Model (IOM) (SAS System 9.2) Type Library"ĭim obObjectKeeper As New SASObjectManager.objectKeeper 'Requires reference to "SASObjectManager 1.1 Type Library"ĭim obObjectFactory As ObjectFactoryMulti2 Set ws = ConnectToServerUsingObjectFactory()Ĭode = "data tmp set sashelp.class run "įunction ConnectToServerUsingObjectFactory() As workspace 'Add reference to "SAS: Integrated Object Model (IOM)." and "SASObjectManager.
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The sample also connects to a server defined in metadata, but you should be able to change the code to connect to your local server if preferred. Note: The sample uses the 9.2 interfaces, but I'd expect similar code to work in 9.1.3. There are some help files (.chm) in the Integration Technologies installation folder that should provide some guidance on those interfaces. You have to have SAS Integration Technologies client (standalone, or bundled with AMO and EG) installed on the machine to be able to add the required references to the SAS type libraries in the VBA editor in Excel. I put together the sample VBA code below and ran it in Excel. I debated posting it, but was afraid it would clutter the thread.