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Microsoft KB Archive/171719

From BetaArchive Wiki

Article ID: 171719

Article Last Modified on 8/17/2005



APPLIES TO

  • Microsoft Excel 97 Standard Edition
  • Microsoft Excel 98 for Macintosh
  • Microsoft Excel 95 Standard Edition
  • Microsoft Excel 5.0 Standard Edition



This article was previously published under Q171719


SUMMARY

When you use the Microsoft Excel TREND function in a Sub procedure in a Microsoft Visual Basic for Applications macro, the function behaves differently than when you use it in a custom function.

This article explains how to use the TREND function in a Visual Basic Sub procedure.

MORE INFORMATION

Microsoft provides programming examples for illustration only, without warranty either expressed or implied. This includes, but is not limited to, the implied warranties of merchantability or fitness for a particular purpose. This article assumes that you are familiar with the programming language that is being demonstrated and with the tools that are used to create and to debug procedures. Microsoft support engineers can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific requirements. You can use the TREND function in a custom function like you do in a spreadsheet. For example, the following function works correctly when called by a formula in a worksheet:

   Function NewTrend(KnownYs, NewXs)
 
      NewTrend = Application.Trend(KnownYs, , NewXs, True)
 
   End Function
                

However, if this function is called by a subroutine in a module, one of the following error messages appears.

Microsoft Excel 97

Unable to get the Trend property of the WorksheetFunction class

Microsoft Excel 5.0 and 7.0, Microsoft Excel 98

Type mismatch

When you use similar code in the Sub procedure, these error messages also appear. For example, the error messages appear when you run the following code in a Sub procedure:

   Sub TrendError()
      MsgBox Application.Trend(Worksheets(1).Range("A1:D1").Value, , _
         5, True)
   End Sub
                

Using the TREND Function in a Sub Procedure

The methods in this article for using a TREND function in a Sub procedure require that the argument for new x's be passed as a Single or a Double data type. Note that the TREND function also returns an array and that it is necessary to pull the desired element to view the result of the function.

Microsoft Excel 97: The following sample macro uses a TREND function in a Sub procedure in Microsoft Excel 97:

   Sub GoodTrend()
 
      Dim NewXs as Single
      NewXs = 5
      Result = Application.WorksheetFunction.Trend( _
         Worksheets(1).Range("A1:D1").Value, , NewXs, True)
      MsgBox Result(1)
 
   End Sub
                

Microsoft Excel 5.0 and 7.0 and Microsoft Excel 98:

The following sample macro uses a TREND function in a Sub procedure in Microsoft Excel 5.0, 7.0, and 98:

   Sub GoodTrend()
 
      Dim NewXs as Single
      NewXs = 5
      Result = Application.Trend(Worksheets(1).Range("A1:D1").Value, _
         , NewXs, True)
      MsgBox Result(1)
 
   End Sub
                

NOTE: This macro works with horizontal or vertical ranges.


Additional query words: XL97 XL98 XL7 XL5 XL

Keywords: kbinfo kbprogramming kbdtacode KB171719