XL: VB Code to Automatically Set Min and Max Scale for Y- Axis
ID: Q141363
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The information in this article applies to:
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Microsoft Excel 97 for Windows
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Microsoft Excel for Windows 95, version 7.0
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Microsoft Excel for Windows, versions 5.0, 5.0c
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Microsoft Excel for the Macintosh, versions 5.0, 5.0a
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Microsoft Excel 98 Macintosh Edition
SUMMARY
In Microsoft Excel, you can set the Minimum and Maximum properties of the
y-axis scale to any value. The example in this article shows the steps
necessary to create a Microsoft Visual Basic for Applications procedure
that determines the minimum and maximum values contained in your data and
sets the scale based on these values.
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 professionals 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/overview/overview.asp
The following Visual Basic macro sets the minimum and maximum values for
the y-axis scale in a chart to the maximum and minimum values of the data
used to create the chart.
Type the following in a Visual Basic module sheet:
Sub SetScaleToMinAndMaxValues()
Dim ValuesArray(), SeriesValues As Variant
Dim Ctr As Integer, TotCtr As Integer
' Uses the first chart on the active worksheet.
With ActiveSheet.ChartObjects(1).Chart
' Note: Instead of the preceding line, you could use this line:
'
' With ActiveChart
'
' if you wanted to be able to run this macro on a chart sheet.
' Loops through all of the Series and retrieves the values
' and places them into an array named ValuesArray.
For Each X In .SeriesCollection
SeriesValues = X.Values
ReDim Preserve ValuesArray(1 To TotCtr + UBound(SeriesValues))
For Ctr = 1 To UBound(SeriesValues)
ValuesArray(Ctr + TotCtr) = SeriesValues(Ctr, 1)
' In Excel 97 for Windows and Excel 98 Macintosh Edition,
' change the preceding line of code to read as follows:
'
' ValuesArray(Ctr + TotCtr) = SeriesValues(Ctr)
Next
TotCtr = TotCtr + UBound(SeriesValues)
Next
' Reset the minimum and maximum scale to the minimum and
' maximum values in the ValuesArray.
.Axes(xlValue).MinimumScaleIsAuto = True
.Axes(xlValue).MaximumScaleIsAuto = True
.Axes(xlValue).MinimumScale = Application.Min(ValuesArray)
.Axes(xlValue).MaximumScale = Application.Max(ValuesArray)
End With
End Sub
Using the Macro
- Select the worksheet that contains your chart.
- To activate the macro, click Macro on the Tools menu, and run the
SetScaleToMinAndMaxValues macro.
In Excel 97 and Excel 98, click Tools, point to Macro, and then click
Macros. Click SetScaleToMinAndMaxValues, and then click Run.
The minimum and maximum values of the y-axis should now be equal to the
minimum and maximum values of the data.
REFERENCES
"Visual Basic User's Guide," version 5.0, pages 145-146
Additional query words:
Keywords : kbprg kbdta kbdtacode PgmHowto KbVBA xlchart
Version : MACINTOSH:5.0,5.0a; WINDOWS:5.0,5.0c,7.0
Platform : MACINTOSH WINDOWS
Issue type : kbhowto