チャートのデータソースを設定
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以前のトピックで、チャートのデータソースを設定する方法の多くの例を提供しましたが、このトピックではチャートに設定できるデータの種類について詳細を提供します。
チャートデータの設定
Aspose.Cellsを使用してチャートを作成する際に扱うデータには、次の2種類があります:
- チャートデータ。
- カテゴリデータ。
チャートデータ
チャートデータは、チャートを作成するためのデータソースとして使用するデータです。 SeriesCollectionオブジェクトのAddメソッドを呼び出すことで、セルの範囲(チャートデータを含む)を追加できます。
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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 directory if it is not already present. | |
bool IsExists = System.IO.Directory.Exists(dataDir); | |
if (!IsExists) | |
System.IO.Directory.CreateDirectory(dataDir); | |
// Instantiating a Workbook object | |
Workbook workbook = new Workbook(); | |
// Adding a new worksheet to the Excel object | |
int sheetIndex = workbook.Worksheets.Add(); | |
// Obtaining the reference of the newly added worksheet by passing its sheet index | |
Worksheet worksheet = workbook.Worksheets[sheetIndex]; | |
// Adding sample values to cells | |
worksheet.Cells["A1"].PutValue(50); | |
worksheet.Cells["A2"].PutValue(100); | |
worksheet.Cells["A3"].PutValue(170); | |
worksheet.Cells["A4"].PutValue(300); | |
worksheet.Cells["B1"].PutValue(160); | |
worksheet.Cells["B2"].PutValue(32); | |
worksheet.Cells["B3"].PutValue(50); | |
worksheet.Cells["B4"].PutValue(40); | |
// Adding sample values to cells as category data | |
worksheet.Cells["C1"].PutValue("Q1"); | |
worksheet.Cells["C2"].PutValue("Q2"); | |
worksheet.Cells["C3"].PutValue("Y1"); | |
worksheet.Cells["C4"].PutValue("Y2"); | |
// Adding a chart to the worksheet | |
int chartIndex = worksheet.Charts.Add(Aspose.Cells.Charts.ChartType.Column, 5, 0, 15, 5); | |
// Accessing the instance of the newly added chart | |
Aspose.Cells.Charts.Chart chart = worksheet.Charts[chartIndex]; | |
// Adding SeriesCollection (chart data source) to the chart ranging from "A1" cell to "B4" | |
chart.NSeries.Add("A1:B4", true); | |
// Saving the Excel file | |
workbook.Save(dataDir + "output.xls"); |
カテゴリデータ
カテゴリデータは、チャートデータのラベリングに使用され、SeriesCollectionのCategoryDataプロパティを使用して追加できます。以下に使用例を示します。上記のコードを実行すると、ワークシートに列グラフが追加されます。
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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 directory if it is not already present. | |
bool IsExists = System.IO.Directory.Exists(dataDir); | |
if (!IsExists) | |
System.IO.Directory.CreateDirectory(dataDir); | |
// Instantiating a Workbook object | |
Workbook workbook = new Workbook(); | |
// Adding a new worksheet to the Excel object | |
int sheetIndex = workbook.Worksheets.Add(); | |
// Obtaining the reference of the newly added worksheet by passing its sheet index | |
Worksheet worksheet = workbook.Worksheets[sheetIndex]; | |
// Adding sample values to cells | |
worksheet.Cells["A1"].PutValue(10); | |
worksheet.Cells["A2"].PutValue(100); | |
worksheet.Cells["A3"].PutValue(170); | |
worksheet.Cells["A4"].PutValue(200); | |
worksheet.Cells["B1"].PutValue(120); | |
worksheet.Cells["B2"].PutValue(320); | |
worksheet.Cells["B3"].PutValue(50); | |
worksheet.Cells["B4"].PutValue(40); | |
// Adding sample values to cells as category data | |
worksheet.Cells["C1"].PutValue("Q1"); | |
worksheet.Cells["C2"].PutValue("Q2"); | |
worksheet.Cells["C3"].PutValue("Y1"); | |
worksheet.Cells["C4"].PutValue("Y2"); | |
// Adding a chart to the worksheet | |
int chartIndex = worksheet.Charts.Add(Aspose.Cells.Charts.ChartType.Column, 5, 0, 15, 5); | |
// Accessing the instance of the newly added chart | |
Aspose.Cells.Charts.Chart chart = worksheet.Charts[chartIndex]; | |
// Adding SeriesCollection (chart data source) to the chart ranging from "A1" cell to "B4" | |
chart.NSeries.Add("A1:B4", true); | |
// Setting the data source for the category data of SeriesCollection | |
chart.NSeries.CategoryData = "C1:C4"; | |
// Saving the Excel file | |
workbook.Save(dataDir + "output.xls"); |