Scaling macro doesn't work well for percentage chart

artz

Well-known Member
Joined
Aug 11, 2002
Messages
791
Hi,

I am using a scaling macro to minimize white space on a line chart. For whole numbers, it does a beautiful job of scaling. On my other chart, where the data is fractional and is plotted with percent on the Y axis, it does terribly at minimizing white space. Below is the code that I am using:
Code:
Sub ScaleCharts()
'
' ScaleCharts Macro
'
Dim objCht As ChartObject
Dim maxi As Double, mini As Double, Range, Adj As Double, xMax As Double, xMin As Double
Dim Round As Integer, Order As Integer, x As Integer, i As Integer

Application.ScreenUpdating = False
For x = 1 To ActiveWorkbook.Sheets.Count
Application.StatusBar = "Crunching sheet " & x & " of " & ActiveWorkbook.Sheets.Count

For Each objCht In Sheets(x).ChartObjects
  If objCht.Chart.ChartType = xlLine Or objCht.Chart.ChartType = xlXYScatter Then
  With objCht.Chart
  For i = 0 To .SeriesCollection.Count - 1 'Loop through all the series in the chart

            'Get the Max and Min values of the data in the chart
            maxi = Application.Max(.SeriesCollection(i + 1).Values)
            mini = Application.Min(.SeriesCollection(i + 1).Values)
            Range = maxi - mini

            If Range > 1 Then
                Order = Len(Int(Range))
                Adj = 10 ^ (Order - 2)
                Round = -1 * (Order - 1)
            ElseIf Range <> 0 Then
                Order = Len(Int(1 / Range))
                Adj = 10 ^ (-1 * Order)
                Round = Order - 1
            End If

            'Get the Max and Min values for the axis based on the data
            If i = 0 Or WorksheetFunction.Round(maxi, Round + 1) + Adj > xMax Then
                xMax = WorksheetFunction.Round(maxi, Round + 1) + Adj
            End If

            If i = 0 Or WorksheetFunction.Round(mini, Round + 1) - Adj < xMin Then
                xMin = WorksheetFunction.Round(mini, Round + 1) - Adj
            End If
       Next i

       With .Axes(xlValue)
          .MaximumScale = xMax
          .MinimumScale = xMin
       End With
    End With
  End If
Next objCht
Next x
Application.ScreenUpdating = True
Application.StatusBar = False

End Sub

Does anybody have a suggestion to optimize this scaling code for fractional data?

Thanks,

Art
 

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