引出線付き円グラフの作成
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この記事では、Aspose.Cells for .NET API を使用して、引出線付きの円グラフを最初から作成する方法について説明します。Excel では、[引出線を表示] オプションがデフォルトで設定されているため、Excel で円グラフを作成すると、引出線が表示されます。ただし、Aspose.Cells API を使用して同様のグラフを作成する場合は、明示的にSeries.HasLeaderLines財産。
Aspose.Cells for .NET API を使用して引出線付きの円グラフを作成する方法を示すために、最初に新しいワークブック系列データ ソースとして機能するデータを入力します。データが整ったら、チャートタイプのChartType.Pieチャートのコレクションに追加し、そのさまざまな側面を設定して、目的のチャート ビューを取得します。
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// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET | |
// The path to the documents directory. | |
string dataDir = RunExamples.GetDataDir(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType); | |
// Create an instance of Workbook in XLSX format | |
Workbook workbook = new Workbook(FileFormatType.Xlsx); | |
// Access the first worksheet | |
Worksheet worksheet = workbook.Worksheets[0]; | |
// Add two columns of data | |
worksheet.Cells["A1"].PutValue("Retail"); | |
worksheet.Cells["A2"].PutValue("Services"); | |
worksheet.Cells["A3"].PutValue("Info & Communication"); | |
worksheet.Cells["A4"].PutValue("Transport Equip"); | |
worksheet.Cells["A5"].PutValue("Construction"); | |
worksheet.Cells["A6"].PutValue("Other Products"); | |
worksheet.Cells["A7"].PutValue("Wholesale"); | |
worksheet.Cells["A8"].PutValue("Land Transport"); | |
worksheet.Cells["A9"].PutValue("Air Transport"); | |
worksheet.Cells["A10"].PutValue("Electric Appliances"); | |
worksheet.Cells["A11"].PutValue("Securities"); | |
worksheet.Cells["A12"].PutValue("Textiles & Apparel"); | |
worksheet.Cells["A13"].PutValue("Machinery"); | |
worksheet.Cells["A14"].PutValue("Metal Products"); | |
worksheet.Cells["A15"].PutValue("Cash"); | |
worksheet.Cells["A16"].PutValue("Banks"); | |
worksheet.Cells["B1"].PutValue(10.4); | |
worksheet.Cells["B2"].PutValue(5.2); | |
worksheet.Cells["B3"].PutValue(6.4); | |
worksheet.Cells["B4"].PutValue(10.4); | |
worksheet.Cells["B5"].PutValue(7.9); | |
worksheet.Cells["B6"].PutValue(4.1); | |
worksheet.Cells["B7"].PutValue(3.5); | |
worksheet.Cells["B8"].PutValue(5.7); | |
worksheet.Cells["B9"].PutValue(3); | |
worksheet.Cells["B10"].PutValue(14.7); | |
worksheet.Cells["B11"].PutValue(3.6); | |
worksheet.Cells["B12"].PutValue(2.8); | |
worksheet.Cells["B13"].PutValue(7.8); | |
worksheet.Cells["B14"].PutValue(2.4); | |
worksheet.Cells["B15"].PutValue(1.8); | |
worksheet.Cells["B16"].PutValue(10.1); | |
// Create a pie chart and add it to the collection of charts | |
int id = worksheet.Charts.Add(ChartType.Pie, 3, 3, 23, 13); | |
// Access newly created Chart instance | |
Chart chart = worksheet.Charts[id]; | |
// Set series data range | |
chart.NSeries.Add("B1:B16", true); | |
// Set category data range | |
chart.NSeries.CategoryData = "A1:A16"; | |
// Turn off legend | |
chart.ShowLegend = false; | |
// Access data labels | |
DataLabels dataLabels = chart.NSeries[0].DataLabels; | |
// Turn on category names | |
dataLabels.ShowCategoryName = true; | |
// Turn on percentage format | |
dataLabels.ShowPercentage = true; | |
// Set position | |
dataLabels.Position = LabelPositionType.OutsideEnd; | |
// Set separator | |
dataLabels.SeparatorType = DataLabelsSeparatorType.Comma; |
ここまでで、円グラフを作成し、さまざまな側面を設定しました。次に、チャートのリーダー ラインをオンにします。リーダー ラインを表示するには、データ ラベルを少し移動する必要があることに注意してください。
次のコードは、リーダー ラインをオンにし、グラフを更新してから、データ ラベルの位置を計算して、それに応じて移動します。
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// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET | |
// Create an instance of Workbook in XLSX format | |
Workbook workbook = new Workbook(FileFormatType.Xlsx); | |
// Access the first worksheet | |
Worksheet worksheet = workbook.Worksheets[0]; | |
// Add two columns of data | |
worksheet.Cells["A1"].PutValue("Retail"); | |
worksheet.Cells["A2"].PutValue("Services"); | |
worksheet.Cells["A3"].PutValue("Info & Communication"); | |
worksheet.Cells["A4"].PutValue("Transport Equip"); | |
worksheet.Cells["A5"].PutValue("Construction"); | |
worksheet.Cells["A6"].PutValue("Other Products"); | |
worksheet.Cells["A7"].PutValue("Wholesale"); | |
worksheet.Cells["A8"].PutValue("Land Transport"); | |
worksheet.Cells["A9"].PutValue("Air Transport"); | |
worksheet.Cells["A10"].PutValue("Electric Appliances"); | |
worksheet.Cells["A11"].PutValue("Securities"); | |
worksheet.Cells["A12"].PutValue("Textiles & Apparel"); | |
worksheet.Cells["A13"].PutValue("Machinery"); | |
worksheet.Cells["A14"].PutValue("Metal Products"); | |
worksheet.Cells["A15"].PutValue("Cash"); | |
worksheet.Cells["A16"].PutValue("Banks"); | |
worksheet.Cells["B1"].PutValue(10.4); | |
worksheet.Cells["B2"].PutValue(5.2); | |
worksheet.Cells["B3"].PutValue(6.4); | |
worksheet.Cells["B4"].PutValue(10.4); | |
worksheet.Cells["B5"].PutValue(7.9); | |
worksheet.Cells["B6"].PutValue(4.1); | |
worksheet.Cells["B7"].PutValue(3.5); | |
worksheet.Cells["B8"].PutValue(5.7); | |
worksheet.Cells["B9"].PutValue(3); | |
worksheet.Cells["B10"].PutValue(14.7); | |
worksheet.Cells["B11"].PutValue(3.6); | |
worksheet.Cells["B12"].PutValue(2.8); | |
worksheet.Cells["B13"].PutValue(7.8); | |
worksheet.Cells["B14"].PutValue(2.4); | |
worksheet.Cells["B15"].PutValue(1.8); | |
worksheet.Cells["B16"].PutValue(10.1); | |
// Create a pie chart and add it to the collection of charts | |
int id = worksheet.Charts.Add(ChartType.Pie, 3, 3, 23, 13); | |
// Access newly created Chart instance | |
Chart chart = worksheet.Charts[id]; | |
// Set series data range | |
chart.NSeries.Add("B1:B16", true); | |
// Set category data range | |
chart.NSeries.CategoryData = "A1:A16"; | |
// Turn off legend | |
chart.ShowLegend = false; | |
// Access data labels | |
DataLabels dataLabels = chart.NSeries[0].DataLabels; | |
// Turn on category names | |
dataLabels.ShowCategoryName = true; | |
// Turn on percentage format | |
dataLabels.ShowPercentage = true; | |
// Set position | |
dataLabels.Position = LabelPositionType.OutsideEnd; | |
// Set separator | |
dataLabels.SeparatorType = DataLabelsSeparatorType.Comma; | |
// Turn on leader lines | |
chart.NSeries[0].HasLeaderLines = true; | |
// Calculete chart | |
chart.Calculate(); | |
// You need to move DataLabels a little leftward or rightward depending on their position to show leader lines | |
int DELTA = 100; | |
for (int i = 0; i < chart.NSeries[0].Points.Count; i++) | |
{ | |
int X = chart.NSeries[0].Points[i].DataLabels.X; | |
// If it is greater than 2000, then move the X position a little right otherwise move the X position a little left | |
if (X > 2000) | |
chart.NSeries[0].Points[i].DataLabels.X = X + DELTA; | |
else | |
chart.NSeries[0].Points[i].DataLabels.X = X - DELTA; | |
} |
最後に、次のコードは、グラフをイメージ形式で保存し、ワークブックを XLSX 形式で保存します。
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// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET | |
// Create an instance of Workbook in XLSX format | |
Workbook workbook = new Workbook(FileFormatType.Xlsx); | |
// Access the first worksheet | |
Worksheet worksheet = workbook.Worksheets[0]; | |
// Add two columns of data | |
worksheet.Cells["A1"].PutValue("Retail"); | |
worksheet.Cells["A2"].PutValue("Services"); | |
worksheet.Cells["A3"].PutValue("Info & Communication"); | |
worksheet.Cells["A4"].PutValue("Transport Equip"); | |
worksheet.Cells["A5"].PutValue("Construction"); | |
worksheet.Cells["A6"].PutValue("Other Products"); | |
worksheet.Cells["A7"].PutValue("Wholesale"); | |
worksheet.Cells["A8"].PutValue("Land Transport"); | |
worksheet.Cells["A9"].PutValue("Air Transport"); | |
worksheet.Cells["A10"].PutValue("Electric Appliances"); | |
worksheet.Cells["A11"].PutValue("Securities"); | |
worksheet.Cells["A12"].PutValue("Textiles & Apparel"); | |
worksheet.Cells["A13"].PutValue("Machinery"); | |
worksheet.Cells["A14"].PutValue("Metal Products"); | |
worksheet.Cells["A15"].PutValue("Cash"); | |
worksheet.Cells["A16"].PutValue("Banks"); | |
worksheet.Cells["B1"].PutValue(10.4); | |
worksheet.Cells["B2"].PutValue(5.2); | |
worksheet.Cells["B3"].PutValue(6.4); | |
worksheet.Cells["B4"].PutValue(10.4); | |
worksheet.Cells["B5"].PutValue(7.9); | |
worksheet.Cells["B6"].PutValue(4.1); | |
worksheet.Cells["B7"].PutValue(3.5); | |
worksheet.Cells["B8"].PutValue(5.7); | |
worksheet.Cells["B9"].PutValue(3); | |
worksheet.Cells["B10"].PutValue(14.7); | |
worksheet.Cells["B11"].PutValue(3.6); | |
worksheet.Cells["B12"].PutValue(2.8); | |
worksheet.Cells["B13"].PutValue(7.8); | |
worksheet.Cells["B14"].PutValue(2.4); | |
worksheet.Cells["B15"].PutValue(1.8); | |
worksheet.Cells["B16"].PutValue(10.1); | |
// Create a pie chart and add it to the collection of charts | |
int id = worksheet.Charts.Add(ChartType.Pie, 3, 3, 23, 13); | |
// Access newly created Chart instance | |
Chart chart = worksheet.Charts[id]; | |
// Set series data range | |
chart.NSeries.Add("B1:B16", true); | |
// Set category data range | |
chart.NSeries.CategoryData = "A1:A16"; | |
// Turn off legend | |
chart.ShowLegend = false; | |
// Access data labels | |
DataLabels dataLabels = chart.NSeries[0].DataLabels; | |
// Turn on category names | |
dataLabels.ShowCategoryName = true; | |
// Turn on percentage format | |
dataLabels.ShowPercentage = true; | |
// Set position | |
dataLabels.Position = LabelPositionType.OutsideEnd; | |
// Set separator | |
dataLabels.SeparatorType = DataLabelsSeparatorType.Comma; | |
// In order to save the chart image, create an instance of ImageOrPrintOptions | |
ImageOrPrintOptions anOption = new ImageOrPrintOptions(); | |
// Set image format | |
anOption.ImageType = Drawing.ImageType.Png; | |
// Set resolution | |
anOption.HorizontalResolution = 200; | |
anOption.VerticalResolution = 200; | |
// Render chart to image | |
chart.ToImage(dataDir + "output_out.png", anOption); | |
// Save the workbook to see chart inside the Excel | |
workbook.Save(dataDir + "output_out.xlsx"); |
結果の円グラフ |
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