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Gets or sets the unit for each picture in the series when the picture type is set to StackScale.
This property is used only when the series picture type is StackScale.
double PictureUnit { get; set; }
Property PictureUnit As Double
worksheet.Range["A1:B4"].Value = new object[,] {{"Month", "Sales"}, {"Jan", 12}, {"Feb", 18}, {"Mar", 15}};
IChart chart = worksheet.Shapes.AddChart(ChartType.ColumnClustered, 20, 20, 300, 200).Chart;
chart.SeriesCollection.Add(worksheet.Range["A1:B4"]);
ISeries series = chart.SeriesCollection[0];
series.PictureType = DrawingPictureType.StackScale;
series.PictureUnit = 2.0;
double pictureUnit = series.PictureUnit;