Pie charts are a way to show data. Pie charts show proportions of a whole. The circle of the pie chart represents the whole. That's a full 360 degrees. Each part, or slice, represents part of the ...
chart.ChartData.Categories.Add(workbook.GetCell(defaultWorksheetIndex, 1, 0, "Category 1")); chart.ChartData.Categories.Add(workbook.GetCell(defaultWorksheetIndex, 2 ...