PPT: Sample VBA Code to Create a Graph from a Text File

• Microsoft Graph version 97 for Windows
• Microsoft Graph 98 Macintosh Edition
• Microsoft PowerPoint 97 for Windows
• Microsoft PowerPoint 98 Macintosh Edition

SUMMARY

This article provides a sample Microsoft Visual Basic for Applications macro (Sub procedure) that creates a Microsoft PowerPoint presentation containing a Microsoft Graph object. The graph is created using data imported from a data file. This file must be in comma-separated values (CSV) format or tab-separated values format.

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

Sample Visual Basic Procedure

   Sub CreateGraphFromFile()

      Dim oGraph As Object
      Dim oDataSheet As Object
      Dim shpGraph As PowerPoint.Shape
      Dim lRowCnt As Long
      Dim lColCnt As Long
      Dim lValue As Long

      ' Add the graph to the slide.
      With ActivePresentation.Slides(1)
         ' Create the Graph object on the slide.
         Set shpGraph = .Shapes.AddOLEObject(ClassName:="MSGraph.Chart", _
                                           Link:=msoFalse)
      End With

      ' Set references.
      Set oGraph = shpGraph.OLEFormat.Object
      Set oDataSheet = oGraph.Application.DataSheet

      ' Place headers into data table.
      ' Create four column headers.
      oDataSheet.Cells(1, 2).Value = "Col1"
      oDataSheet.Cells(1, 3).Value = "Col2"
      oDataSheet.Cells(1, 4).Value = "Col3"
      oDataSheet.Cells(1, 5).Value = "Col4"

      ' Create four row headers.
      oDataSheet.Cells(2, 1).Value = "Row1"
      oDataSheet.Cells(3, 1).Value = "Row2"
      oDataSheet.Cells(4, 1).Value = "Row3"
      oDataSheet.Cells(5, 1).Value = "Row4"

      ' We already know the number of columns and rows
      ' from the data we are importing.
      Open "<YourPathAndFileNameHere>" For Input As #1

      ' Get four rows of data.
      For lRowCnt = 2 To 5
         For lColCnt = 2 To 5

            ' Get value from file.
            Input #1, lValue

            ' Place in data table.
            oDataSheet.Cells(lRowCnt, lColCnt).Value = lValue
         Next lColCnt
      Next lRowCnt
      Close #1

      ' Release the reference.
      Set oGraph = Nothing
      Set oDataSheet = Nothing
   End Sub

REFERENCES

For more information about creating Visual Basic for Applications macros, click the Office Assistant in Microsoft PowerPoint, type "how to create a macro," click Search, and then click to view "Create a macro in Visual Basic Editor."

For more information about running Visual Basic for Applications macros, click the Office Assistant in Microsoft PowerPoint, type "how to run a macro," click Search, and then click to view "Run a macro."

NOTE: If the Assistant is hidden, click the Office Assistant button on the Standard toolbar. If Microsoft PowerPoint Help is not installed on your computer, please see the following article in the Microsoft Knowledge Base:

   ARTICLE-ID: Q120802
   TITLE     : Office: How to Add/Remove a Single Office
               Program or Component

   ARTICLE-ID: Q163435
   TITLE     : VBA: Programming Resources for Visual Basic for
               Applications

   ARTICLE-ID: Q163188
   TITLE     : PPT: Sample VB Code to Create a Graph on a Slide

   ARTICLE-ID: Q172836
   TITLE     : PPT: Sample Code to Change the Chart Type of a Graph