C++を使ったExcelグラフの凡例管理
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凡例オプション
Aspose.Cellsを使えば、ランタイム中にチャートの凡例を管理できます。凡例オブジェクトを使用すれば、凡例の移動、更新、フォーマットが可能です。
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チャートの凡例の設定
Aspose.Cellsの凡例を使えば、凡例の管理は非常に簡単です。
凡例管理のためのコードスニペットは次のとおりです:
#include <iostream>
#include "Aspose.Cells.h"
using namespace Aspose::Cells;
using namespace Aspose::Cells::Charts;
int main() {
Aspose::Cells::Startup();
// Instantiating a Workbook object
Workbook workbook;
// Adding a new worksheet to the Workbook object
int sheetIndex = workbook.GetWorksheets().Add();
// Obtaining the reference of the newly added worksheet by passing its sheet index
Worksheet worksheet = workbook.GetWorksheets().Get(sheetIndex);
// Adding sample values to cells
worksheet.GetCells().Get(u"A1").PutValue(50);
worksheet.GetCells().Get(u"A2").PutValue(100);
worksheet.GetCells().Get(u"A3").PutValue(150);
worksheet.GetCells().Get(u"B1").PutValue(60);
worksheet.GetCells().Get(u"B2").PutValue(32);
worksheet.GetCells().Get(u"B3").PutValue(50);
// Adding a chart to the worksheet
int chartIndex = worksheet.GetCharts().Add(ChartType::Column, 5, 0, 15, 5);
// Accessing the instance of the newly added chart
Chart chart = worksheet.GetCharts().Get(chartIndex);
// Adding SeriesCollection (chart data source) to the chart ranging from "A1" cell to "B3"
chart.GetNSeries().Add(u"A1:B3", true);
// Setting the title of a chart
chart.GetTitle().SetText(u"Title");
// Setting the font color of the chart title to blue
chart.GetTitle().GetFont().SetColor(Color::Blue());
// Move the legend to left
chart.GetLegend().SetPosition(LegendPositionType::Left);
// Set font color of the legend
chart.GetLegend().GetFont().SetColor(Color::Blue());
// Save the file
workbook.Save(u"chart_legend.xlsx");
Aspose::Cells::Cleanup();
return 0;
}