VBA在Excel中的应用（三）

目录

Chart Export
Chart Format
Chart Lengend
Chart Protect
Chart Title
Chart

Chart Export

1. 1. 将Excel中的图表导出成gif格式的图片保存到硬盘上
   Sub ExportChart()
       Dim myChart As Chart
       Set myChart = ActiveChart
       myChart.Export Filename:="C:\Chart.gif", Filtername:="GIF"
   End Sub
   理论上图表可以被保存成任何类型的图片文件，读者可以自己去尝试。
2. 2. 将Excel中的图表导出成可交互的页面保存到硬盘上
   Sub SaveChartWeb()
       ActiveWorkbook.PublishObjects.Add _
           SourceType:=xlSourceChart, _
           Filename:=ActiveWorkbook.Path & "\Sample2.htm", _
           Sheet:=ActiveSheet.name, _
           Source:=" Chart 1", _
           HtmlType:=xlHtmlChart
   
       ActiveWorkbook.PublishObjects(1).Publish (True)
   End Sub

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 Chart Format

1. 1. 操作Chart对象。给几个用VBA操作Excel Chart对象的例子，读者可以自己去尝试一下。
   Public Sub ChartInterior()
       Dim myChart As Chart
       'Reference embedded chart
       Set myChart = ActiveSheet.ChartObjects(1).Chart
       With myChart   'Alter interior colors of chart components
           .ChartArea.Interior.Color = RGB(1, 2, 3)
           .PlotArea.Interior.Color = RGB(11, 12, 1)
           .Legend.Interior.Color = RGB(31, 32, 33)
           If .HasTitle Then
               .ChartTitle.Interior.Color = RGB(41, 42, 43)
           End If
       End With
   End Sub
   
   
   Public Sub SetXAxis()
       Dim myAxis As Axis
       Set myAxis = ActiveSheet.ChartObjects(1).Chart.Axes(xlCategory, xlPrimary)
       With myAxis    'Set properties of x-axis
           .HasMajorGridlines = True
           .HasTitle = True
           .AxisTitle.Text = "My Axis"
           .AxisTitle.Font.Color = RGB(1, 2, 3)
           .CategoryNames = Range("C2:C11")
           .TickLabels.Font.Color = RGB(11, 12, 13)
       End With
   End Sub
   
   
   Public Sub TestSeries()
       Dim mySeries As Series
       Dim seriesCol As SeriesCollection
       Dim I As Integer
       I = 1
       Set seriesCol = ActiveSheet.ChartObjects(1).Chart.SeriesCollection
       For Each mySeries In seriesCol
           Set mySeries = ActiveSheet.ChartObjects(1).Chart.SeriesCollection(I)
           With mySeries
               .MarkerBackgroundColor = RGB(1, 32, 43)
               .MarkerForegroundColor = RGB(11, 32, 43)
               .Border.Color = RGB(11, 12, 23)
           End With
           I = I + 1
       Next
   End Sub
   
   
   Public Sub TestPoint()
       Dim myPoint As Point
       Set myPoint = ActiveSheet.ChartObjects(1).Chart.SeriesCollection(1).Points(3)
       With myPoint
           .ApplyDataLabels xlDataLabelsShowValue
           .MarkerBackgroundColor = RGB(1, 2, 3)
           .MarkerForegroundColor = RGB(11, 22, 33)
       End With
   End Sub
   
   
   Sub chartAxis()
       Dim myChartObject As ChartObject
       Set myChartObject = ActiveSheet.ChartObjects.Add(Left:=200, Top:=200, _
           Width:=400, Height:=300)
       
       myChartObject.Chart.SetSourceData Source:= _
           ActiveWorkbook.Sheets("Chart Data").Range("A1:E5")
       
       myChartObject.SeriesCollection.Add Source:=ActiveSheet.Range("C4:K4"), Rowcol:=xlRows
       myChartObject.SeriesCollection.NewSeries
       myChartObject.HasTitle = True
       
       With myChartObject.Axes(Type:=xlCategory, AxisGroup:=xlPrimary)
           .HasTitle = True
           .AxisTitle.Text = "Years"
           .AxisTitle.Font.Name = "Times New Roman"
           .AxisTitle.Font.Size = 12
           .HasMajorGridlines = True
           .HasMinorGridlines = False
       End With
   End Sub
   
   
   Sub FormattingCharts()
       Dim myChart As Chart
       Dim ws As Worksheet
       Dim ax As Axis
   
       Set ws = ThisWorkbook.Worksheets("Sheet1")
       Set myChart = GetChartByCaption(ws, "GDP")
   
       If Not myChart Is Nothing Then
           Set ax = myChart.Axes(xlCategory)
           With ax
               .AxisTitle.Font.Size = 12
               .AxisTitle.Font.Color = vbRed
           End With
           Set ax = myChart.Axes(xlValue)
           With ax
               .HasMinorGridlines = True
               .MinorGridlines.Border.LineStyle = xlDashDot
           End With
           With myChart.PlotArea
               .Border.LineStyle = xlDash
               .Border.Color = vbRed
               .Interior.Color = vbWhite
               .Width = myChart.PlotArea.Width + 10
               .Height = myChart.PlotArea.Height + 10
           End With
           myChart.ChartArea.Interior.Color = vbWhite
           myChart.Legend.Position = xlLegendPositionBottom
       End If
   
       Set ax = Nothing
       Set myChart = Nothing
       Set ws = Nothing
   End Sub
   Function GetChartByCaption(ws As Worksheet, sCaption As String) As Chart
       Dim myChart As ChartObject
       Dim myChart As Chart
       Dim sTitle As String
   
       Set myChart = Nothing
       For Each myChart In ws.ChartObjects
           If myChart.Chart.HasTitle Then
               sTitle = myChart.Chart.ChartTitle.Caption
               If StrComp(sTitle, sCaption, vbTextCompare) = 0 Then
                   Set myChart = myChart.Chart
                   Exit For
               End If
           End If
       Next
       Set GetChartByCaption = myChart
       Set myChart = Nothing
       Set myChart = Nothing
   End Function
2. 2. 使用VBA在Excel中添加图表
   Public Sub AddChartSheet()
     Dim aChart As Chart
   
     Set aChart = Charts.Add
     With aChart
       .Name = "Mangoes"
       .ChartType = xlColumnClustered
       .SetSourceData Source:=Sheets("Sheet1").Range("A3:D7"), PlotBy:=xlRows
       .HasTitle = True
       .ChartTitle.Text = "=Sheet1!R3C1"
     End With
   End Sub
3. 3. 遍历并更改Chart对象中的图表类型
   Sub ChartType()
       Dim myChart As ChartObject
       For Each myChart In ActiveSheet.ChartObjects
           myChart.Chart.Type = xlArea
       Next myChart
   End Sub
4. 4. 遍历并更改Chart对象中的Legend
   Sub LegendMod()
       Dim myChart As ChartObject
       For Each myChart In ActiveSheet.ChartObjects
           With myChart.Chart.Legend.font
               .name = "Calibri"
               .FontStyle = "Bold"
               .Size = 12
           End With
       Next myChart
   End Sub
5. 5. 一个格式化Chart的例子
   Sub ChartMods()
       ActiveChart.Type = xlArea
       ActiveChart.ChartArea.font.name = "Calibri"
       ActiveChart.ChartArea.font.FontStyle = "Regular"
       ActiveChart.ChartArea.font.Size = 9
       ActiveChart.PlotArea.Interior.ColorIndex = xlNone
       ActiveChart.Axes(xlValue).TickLabels.font.bold = True
       ActiveChart.Axes(xlCategory).TickLabels.font.bold = True
       ActiveChart.Legend.Position = xlBottom
   End Sub
6. 6. 通过VBA更改Chart的Title
   Sub ApplyTexture()
       Dim myChart As Chart
       Dim ser As Series
       Set myChart = ActiveChart
       Set ser = myChart.SeriesCollection(2)
       ser.Format.Fill.PresetTextured (msoTextureGreenMarble)
   End Sub
7. 7. 在VBA中使用自定义图片填充Chart对象的series区域
   Sub FormatWithPicture()
       Dim myChart As Chart
       Dim ser As Series
       Set myChart = ActiveChart
       Set ser = myChart.SeriesCollection(1)
       MyPic = "C:\Title.jpg"
       ser.Format.Fill.UserPicture (MyPic)
   End Sub
   Excel中的Chart允许用户对其中选定的区域自定义样式，其中包括使用图片选中样式。在Excel的Layout菜单下有一个Format Selection，首先在Chart对象中选定要格式化的区域，例如series，然后选择该菜单，在弹出的对话框中即可对所选的区域进行格式化。如series选项、填充样式、边框颜色和样式、阴影以及3D效果等。下面再给出一个在VBA中使用渐变色填充Chart对象的series区域的例子。
   Sub TwoColorGradient()
       Dim myChart As Chart
       Dim ser As Series
       Set myChart = ActiveChart
       Set ser = myChart.SeriesCollection(1)
       MyPic = "C:\Title1.jpg"
       ser.Format.Fill.TwoColorGradient msoGradientFromCorner, 3
       ser.Format.Fill.ForeColor.ObjectThemeColor = msoThemeColorAccent6
       ser.Format.Fill.BackColor.ObjectThemeColor = msoThemeColorAccent2
   End Sub
8. 8. 通过VBA格式化Chart对象中series的趋势线样式
   Sub FormatLineOrBorders()
       Dim myChart As Chart
       Set myChart = ActiveChart
       With myChart.SeriesCollection(1).Trendlines(1).Format.Line
           .DashStyle = msoLineLongDashDotDot
           .ForeColor.RGB = RGB(50, 0, 128)
           .BeginArrowheadLength = msoArrowheadShort
           .BeginArrowheadStyle = msoArrowheadOval
           .BeginArrowheadWidth = msoArrowheadNarrow
           .EndArrowheadLength = msoArrowheadLong
           .EndArrowheadStyle = msoArrowheadTriangle
           .EndArrowheadWidth = msoArrowheadWide
       End With
   End Sub
   Excel允许用户为Chart对象的series添加趋势线（trendline），首先在Chart中选中要设置的series，然后选择Layout菜单下的trendline，选择一种trendline样式。
9. 9. 一组利用VBA格式化Chart对象的例子
   Sub FormatBorder()
       Dim myChart As Chart
       Set myChart = ActiveChart
       With myChart.ChartArea.Format.Line
           .DashStyle = msoLineLongDashDotDot
           .ForeColor.RGB = RGB(50, 0, 128)
       End With
   End Sub
   
   
   Sub AddGlowToTitle()
       Dim myChart As Chart
       Set myChart = ActiveChart
       myChart.ChartTitle.Format.Line.ForeColor.RGB = RGB(255, 255, 255)
       myChart.ChartTitle.Format.Line.DashStyle = msoLineSolid
       myChart.ChartTitle.Format.Glow.Color.ObjectThemeColor = msoThemeColorAccent6
       myChart.ChartTitle.Format.Glow.Radius = 8
   End Sub
   
   
   Sub FormatShadow()
       Dim myChart As Chart
       Set myChart = ActiveChart
       With myChart.Legend.Format.Shadow
           .ForeColor.RGB = RGB(0, 0, 128)
           .OffsetX = 5
           .OffsetY = -3
           .Transparency = 0.5
           .Visible = True
       End With
   End Sub
   
   
   Sub FormatSoftEdgesWithLoop()
       Dim myChart As Chart
       Dim ser As Series
       Set myChart = ActiveChart
       Set ser = myChart.SeriesCollection(1)
       For i = 1 To 6
           ser.Points(i).Format.SoftEdge.Type = i
       Next i
   End Sub
10. 10. 在VBA中对Chart对象应用3D效果
    Sub Assign3DPreset()
        Dim myChart As Chart
        Dim shp As Shape
        Set myChart = ActiveChart
        Set shp = myChart.Shapes(1)
        shp.ThreeD.SetPresetCamera msoCameraIsometricLeftDown
    End Sub
    
    
    Sub AssignBevel()
        Dim myChart As Chart
        Dim ser As Series
        Set myChart = ActiveChart
        Set ser = myChart.SeriesCollection(1)
        ser.Format.ThreeD.Visible = True
        ser.Format.ThreeD.BevelTopType = msoBevelCircle
        ser.Format.ThreeD.BevelTopInset = 16
        ser.Format.ThreeD.BevelTopDepth = 6
    End Sub

返回目录

 Chart Lengend

1. 1. 设置Lengend的位置和ChartArea的颜色
   Sub FormattingCharts()
       Dim myChart As Chart
       Dim ws As Worksheet
       Dim ax As Axis
   
       Set ws = ThisWorkbook.Worksheets("Sheet1")
       Set myChart = GetChartByCaption(ws, "GDP")
   
       If Not myChart Is Nothing Then
           myChart.ChartArea.Interior.Color = vbWhite
           myChart.Legend.Position = xlLegendPositionBottom
       End If
   
       Set ax = Nothing
       Set myChart = Nothing
       Set ws = Nothing
   End Sub
   Function GetChartByCaption(ws As Worksheet, sCaption As String) As Chart
       Dim myChart As ChartObject
       Dim myChart As Chart
       Dim sTitle As String
   
       Set myChart = Nothing
       For Each myChart In ws.ChartObjects
           If myChart.Chart.HasTitle Then
               sTitle = myChart.Chart.ChartTitle.Caption
               If StrComp(sTitle, sCaption, vbTextCompare) = 0 Then
                   Set myChart = myChart.Chart
                   Exit For
               End If
           End If
       Next
       Set GetChartByCaption = myChart
       Set myChart = Nothing
       Set myChart = Nothing
   End Function
2. 2. 通过VBA给Chart添加Lengend
   Sub legend()
       Dim myChartObject As ChartObject
       Set myChartObject = ActiveSheet.ChartObjects.Add(Left:=200, Top:=200, _
           Width:=400, Height:=300)
       
       myChartObject.Chart.SetSourceData Source:= _
           ActiveWorkbook.Sheets("Chart Data").Range("A1:E5")
       
       myChartObject.SeriesCollection.Add Source:=ActiveSheet.Range("C4:K4"), Rowcol:=xlRows
       myChartObject.SeriesCollection.NewSeries
       With myChartObject.Legend
           .HasLegend = True
           .Font.Size = 16
           .Font.Name = "Arial"
       End With
   End Sub

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 Chart Protect

1. 1. 保护图表
   Sub ProtectChart()
       Dim myChart As Chart
       Set myChart = ThisWorkbook.Sheets("Protected Chart")
       myChart.Protect "123456", True, True, , True
       myChart.ProtectData = False
       myChart.ProtectGoalSeek = True
       myChart.ProtectSelection = True
   End Sub
   Excel中的Chart可以和Sheet一样被保护，读者可以选中图表所在的Tab，然后通过Review菜单下的Protect Sheet菜单来对图表进行保护设置。代码中的Protected Chart123456是设置保护时的密码，有关Protect函数的参数和设置保护时的其它属性读者可以查阅Excel自带的帮助文档。
2. 2. 取消图表保护
   Sub UnprotectChart()
       Dim myChart As Chart
       Set myChart = ThisWorkbook.Sheets("Protected Chart")
       myChart.Unprotect "123456"
       myChart.ProtectData = False
       myChart.ProtectGoalSeek = False
       myChart.ProtectSelection = False
   End Sub
   与保护图表的示例相对应，可以通过VBA撤销对图表的保护设置。 

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 Chart Title

1. 1. 通过VBA添加图表的标题
   Sub chartTitle()
       Dim myChartObject As ChartObject
       Set myChartObject = ActiveSheet.ChartObjects.Add(Left:=200, Top:=200, _
           Width:=400, Height:=300)
       
       myChartObject.Chart.SetSourceData Source:= _
           ActiveWorkbook.Sheets("Chart Data").Range("A1:E5")
       
       myChartObject.SeriesCollection.Add Source:=ActiveSheet.Range("C4:K4"), Rowcol:=xlRows
       myChartObject.SeriesCollection.NewSeries
       myChartObject.HasTitle = True
   End Sub
   如果要设置标题显示的位置，可以在上述代码的后面加上：
   With myChartObject.ChartTitle
      .Top = 100
      .Left = 150
   End With
   如果要同时设置标题字体，可以在上述代码的后面加上：
   myChartObject.ChartTitle.Font.Name = "Times"
2. 2. 通过VBA修改图表的标题
   Sub charTitleText()
       ActiveChart.ChartTitle.Text = "Industrial Disease in North Dakota"
   End Sub
3. 3. 一个通过标题搜索图表的例子
   Function GetChartByCaption(ws As Worksheet, sCaption As String) As Chart
       Dim myChart As ChartObject
       Dim myChart As Chart
       Dim sTitle As String
   
       Set myChart = Nothing
       For Each myChart In ws.ChartObjects
           If myChart.Chart.HasTitle Then
               sTitle = myChart.Chart.ChartTitle.Caption
               If StrComp(sTitle, sCaption, vbTextCompare) = 0 Then
                   Set myChart = myChart.Chart
                   Exit For
               End If
           End If
       Next
       Set GetChartByCaption = myChart
       Set myChart = Nothing
       Set myChart = Nothing
   End Function
   Sub TestGetChartByCaption()
       Dim myChart As Chart
       Dim ws As Worksheet
       Set ws = ThisWorkbook.Worksheets("Sheet1")
       Set myChart = GetChartByCaption(ws, "I am the Chart Title")
   
       If Not myChart Is Nothing Then
           Debug.Print "Found chart"
       Else
           Debug.Print "Sorry - chart not found"
       End If
   
       Set ws = Nothing
       Set myChart = Nothing
   End Sub

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 Chart

1. 1. 通过VBA创建Chart的几种方式
   使用ChartWizard方法创建
   Sub CreateExampleChartVersionI() 
       Dim ws As Worksheet 
       Dim rgChartData As Range 
       Dim myChart As Chart 
   
       Set ws = ThisWorkbook.Worksheets("Sheet1") 
       Set rgChartData = ws.Range("B1").CurrentRegion 
       Set myChart = Charts.Add 
       Set myChart = myChart.Location(xlLocationAsObject, ws.Name) 
       With myChart 
           .ChartWizard _ 
               Source:=rgChartData, _ 
               Gallery:=xlColumn, _ 
               Format:=1, _ 
               PlotBy:=xlColumns, _ 
               CategoryLabels:=1, _ 
               SeriesLabels:=1, _ 
               HasLegend:=True, _ 
               Title:="Version I", _ 
               CategoryTitle:="Year", _ 
               ValueTitle:="GDP in billions of $" 
       End With 
   
       Set myChart = Nothing 
       Set rgChartData = Nothing 
       Set ws = Nothing 
   End Sub
   使用Chart Object方法创建
   Sub CreateExampleChartVersionII() 
       Dim ws As Worksheet 
       Dim rgChartData As Range 
       Dim myChart As Chart 
   
       Set ws = ThisWorkbook.Worksheets("Basic Chart") 
       Set rgChartData = ws.Range("B1").CurrentRegion 
       Set myChart = Charts.Add 
       Set myChart = myChart.Location(xlLocationAsObject, ws.Name) 
   
       With myChart 
           .SetSourceData rgChartData, xlColumns 
           .HasTitle = True 
           .ChartTitle.Caption = "Version II" 
           .ChartType = xlColumnClustered 
   
           With .Axes(xlCategory) 
               .HasTitle = True 
               .AxisTitle.Caption = "Year" 
           End With 
   
           With .Axes(xlValue) 
               .HasTitle = True 
               .AxisTitle.Caption = "GDP in billions of $" 
           End With 
   
       End With 
   
       Set myChart = Nothing 
       Set rgChartData = Nothing 
       Set ws = Nothing 
   End Sub
   使用ActiveWorkbook.Sheets.Add方法创建
   Sub chart()
       Dim myChartSheet As Chart
       Set myChartSheet = ActiveWorkbook.Sheets.Add _
           (After:=ActiveWorkbook.Sheets(ActiveWorkbook.Sheets.Count), _
           Type:=xlChart)
   End Sub
   使用ActiveSheet.ChartObjects.Add方法创建
   Sub charObj()
       Dim myChartObject As ChartObject
       Set myChartObject = ActiveSheet.ChartObjects.Add(Left:=200, Top:=200, _
           Width:=400, Height:=300)
       myChartObject.Chart.SetSourceData Source:= _
           ActiveWorkbook.Sheets("Chart Data").Range("A1:E5")
   End Sub
   不同的创建方法可以应用在不同的场合，如Sheet中内嵌的图表，一个独立的Chart Tab等，读者可以自己研究。最后一种方法的末尾给新创建的图表设定了数据源，这样图表就可以显示出具体的图形了。
   如果需要指定图表的类型，可以加上这句代码：
   myChartObject.ChartType = xlColumnStacked
   如果需要在现有图表的基础上添加新的series，下面这行代码可以参考：
   myChartObject.SeriesCollection.Add Source:=ActiveSheet.Range("C4:K4"), Rowcol:=xlRows
   或者通过下面这行代码对已有的series进行扩展：
   myChartObject.SeriesCollection.Extend Source:=Worksheets("Chart Data").Range("P3:P8")
2. 2. 一个相对完整的通过VBA创建Chart的例子
   'Common Excel Chart Types     
   '-------------------------------------------------------------------  
   'Chart   |   VBA Constant (ChartType property of Chart object)     |
   '==================================================================       
   'Column  |   xlColumnClustered, xlColumnStacked, xlColumnStacked100|        
   'Bar     |   xlBarClustered, xlBarStacked, xlBarStacked100         |
   'Line    |   xlLine, xlLineMarkersStacked, xlLineStacked           |
   'Pie     |   xlPie, xlPieOfPie                                     |
   'Scatter |   xlXYScatter, xlXYScatterLines                         |
   '-------------------------------------------------------------------
   
   Public Sub AddChartSheet()
       Dim dataRange As Range
       Set dataRange = ActiveWindow.Selection
       Charts.Add   'Create a chart sheet
       With ActiveChart    'Set chart properties
           .ChartType = xlColumnClustered
           .HasLegend = True
           .Legend.Position = xlRight
   
           .Axes(xlCategory).MinorTickMark = xlOutside
           .Axes(xlValue).MinorTickMark = xlOutside
           .Axes(xlValue).MaximumScale = _
                       Application.WorksheetFunction.RoundUp( _
                       Application.WorksheetFunction.Max(dataRange), -1)
           .Axes(xlCategory).HasTitle = True
           .Axes(xlCategory).AxisTitle.Characters.Text = "X-axis Labels"
           .Axes(xlValue).HasTitle = True
           .Axes(xlValue).AxisTitle.Characters.Text = "Y-axis"
   
           .SeriesCollection(1).name = "Sample Data"
           .SeriesCollection(1).Values = dataRange
       End With
   End Sub
3. 3. 通过选取的Cells Range的值设置Chart中数据标签的内容
   Sub DataLabelsFromRange()
       Dim DLRange As range
       Dim myChart As Chart
       Dim i As Integer
       
       Set myChart = ActiveSheet.ChartObjects(1).Chart
       On Error Resume Next
       Set DLRange = Application.InputBox _
         (prompt:="Range for data labels?", Type:=8)
       If DLRange Is Nothing Then Exit Sub
       On Error GoTo 0
       myChart.SeriesCollection(1).ApplyDataLabels Type:=xlDataLabelsShowValue, AutoText:=True, LegendKey:=False
       Pts = myChart.SeriesCollection(1).Points.Count
       For i = 1 To Pts
           myChart.SeriesCollection(1). _
             Points(i).DataLabel.Characters.Text = DLRange(i)
       Next i
   End Sub
   考虑下面这个场景，当采用下表的数据生成图表Chart4时，默认的效果如下图。
   
       可以手动给该图表添加Data Labels，方法是选中任意的series，右键选择Add Data Labels。如果想要为所有的series添加Data Labels，则需要依次选择不同的series，然后重复该操作。
       Excel中可以通过VBA将指定Cells Range中的值设置到Chart的Data Labels中，上面的代码就是一个例子。程序执行的时候会首先弹出一个提示框，要求用户通过鼠标去选择一个单元格区域以获取到Cells集合（或者直接输入地址），如下图：
       注意VBA中输入型对话框Application.InputBox的使用。在循环中将Range中的值添加到Chart的Data Labels中。
4. 4. 一个使用VBA给Chart添加Data Labels的例子
   Sub AddDataLabels()
       Dim seSales As Series
       Dim pts As Points
       Dim pt As Point
       Dim rngLabels As range
       Dim iPointIndex As Integer
   
       Set rngLabels = range("B4:G4")
   
       Set seSales = ActiveSheet.ChartObjects(1).Chart.SeriesCollection(1)
       seSales.HasDataLabels = True
   
       Set pts = seSales.Points
   
       For Each pt In pts
           iPointIndex = iPointIndex + 1
           pt.DataLabel.text = rngLabels.cells(iPointIndex).text
           pt.DataLabel.font.bold = True
           pt.DataLabel.Position = xlLabelPositionAbove
       Next pt
   End Sub

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