XL: TREND Function Works Differently in Functions Than in Macros

• Microsoft Excel 98 Macintosh Edition
• Microsoft Excel 97 for Windows
• Microsoft Excel for Windows 95, versions 7.0, 7.0a
• Microsoft Excel for Windows, versions 5.0, 5.0c
• Microsoft Excel for the Macintosh, versions 5.0, 5.0a
• Microsoft Excel for Windows NT, version 5.0

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, including, but not limited to, the implied warranties of merchantability and/or fitness for a particular purpose. This article assumes that you are familiar with the programming language being demonstrated and the tools used to create and 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 needs. If you have limited programming experience, you may want to contact the Microsoft fee-based consulting line at (800) 936-5200. For more information about the support options available from Microsoft, please see the following page on the World Wide Web:

   http://www.microsoft.com/support/supportnet/refguide/default.asp

   Function NewTrend(KnownYs, NewXs)

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

   End Function

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

   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

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