Public Sub bb()
a = Sheets("工作表2").Range("P3") + 1
b = Sheets("工作表2").Range("P3") + Sheets("工作表2").Range("P4") + 1 For I = a To b
'選取日期之後的點
ActiveSheet.ChartObjects("圖表 2").Activate
ActiveChart.SeriesCollection(1).Select
ActiveChart.SeriesCollection(1).Points(I).Select
'將選取的點,Size改為10
Selection.MarkerSize = 10
Next
End Sub