Java 投影片中的樹狀圖

Java 投影片樹狀圖簡介

在本教學中，我們將示範如何使用 Aspose.Slides for Java 函式庫在 PowerPoint 簡報中建立樹狀圖。樹狀圖是可視化分層資料的有效方法。

先決條件

開始之前，請確保您的 Java 專案中已設定 Aspose.Slides for Java 程式庫。

第 1 步：導入所需的庫

import com.aspose.slides.*;

第 2 步：載入簡報

String dataDir = "Your Document Directory";
Presentation pres = new Presentation(dataDir + "test.pptx");

第 3 步：建立樹狀圖

try {
    IChart chart = pres.getSlides().get_Item(0).getShapes().addChart(ChartType.Treemap, 50, 50, 500, 400);
    chart.getChartData().getCategories().clear();
    chart.getChartData().getSeries().clear();
    IChartDataWorkbook wb = chart.getChartData().getChartDataWorkbook();
    wb.clear(0);

    //建立分支1
    IChartCategory leaf = chart.getChartData().getCategories().add(wb.getCell(0, "C1", "Leaf1"));
    leaf.getGroupingLevels().setGroupingItem(1, "Stem1");
    leaf.getGroupingLevels().setGroupingItem(2, "Branch1");

    chart.getChartData().getCategories().add(wb.getCell(0, "C2", "Leaf2"));

    leaf = chart.getChartData().getCategories().add(wb.getCell(0, "C3", "Leaf3"));
    leaf.getGroupingLevels().setGroupingItem(1, "Stem2");

    chart.getChartData().getCategories().add(wb.getCell(0, "C4", "Leaf4"));

    //建立分支2
    leaf = chart.getChartData().getCategories().add(wb.getCell(0, "C5", "Leaf5"));
    leaf.getGroupingLevels().setGroupingItem(1, "Stem3");
    leaf.getGroupingLevels().setGroupingItem(2, "Branch2");

    chart.getChartData().getCategories().add(wb.getCell(0, "C6", "Leaf6"));

    leaf = chart.getChartData().getCategories().add(wb.getCell(0, "C7", "Leaf7"));
    leaf.getGroupingLevels().setGroupingItem(1, "Stem4");

    chart.getChartData().getCategories().add(wb.getCell(0, "C8", "Leaf8"));

    //新增數據點
    IChartSeries series = chart.getChartData().getSeries().add(ChartType.Treemap);
    series.getLabels().getDefaultDataLabelFormat().setShowCategoryName(true);

    series.getDataPoints().addDataPointForTreemapSeries(wb.getCell(0, "D1", 4));
    series.getDataPoints().addDataPointForTreemapSeries(wb.getCell(0, "D2", 5));
    series.getDataPoints().addDataPointForTreemapSeries(wb.getCell(0, "D3", 3));
    series.getDataPoints().addDataPointForTreemapSeries(wb.getCell(0, "D4", 6));
    series.getDataPoints().addDataPointForTreemapSeries(wb.getCell(0, "D5", 9));
    series.getDataPoints().addDataPointForTreemapSeries(wb.getCell(0, "D6", 9));
    series.getDataPoints().addDataPointForTreemapSeries(wb.getCell(0, "D7", 4));
    series.getDataPoints().addDataPointForTreemapSeries(wb.getCell(0, "D8", 3));

    series.setParentLabelLayout(ParentLabelLayoutType.Overlapping);

    //使用樹狀圖儲存簡報
    pres.save("Treemap.pptx", SaveFormat.Pptx);
} finally {
    if (pres != null) pres.dispose();
}

Java 投影片中樹狀圖的完整原始碼

String dataDir = "Your Document Directory";
Presentation pres = new Presentation(dataDir + "test.pptx");
try
{
	IChart chart = pres.getSlides().get_Item(0).getShapes().addChart(ChartType.Treemap, 50, 50, 500, 400);
	chart.getChartData().getCategories().clear();
	chart.getChartData().getSeries().clear();
	IChartDataWorkbook wb = chart.getChartData().getChartDataWorkbook();
	wb.clear(0);
	//分行1
	IChartCategory leaf = chart.getChartData().getCategories().add(wb.getCell(0, "C1", "Leaf1"));
	leaf.getGroupingLevels().setGroupingItem(1, "Stem1");
	leaf.getGroupingLevels().setGroupingItem(2, "Branch1");
	chart.getChartData().getCategories().add(wb.getCell(0, "C2", "Leaf2"));
	leaf = chart.getChartData().getCategories().add(wb.getCell(0, "C3", "Leaf3"));
	leaf.getGroupingLevels().setGroupingItem(1, "Stem2");
	chart.getChartData().getCategories().add(wb.getCell(0, "C4", "Leaf4"));
	//分支2
	leaf = chart.getChartData().getCategories().add(wb.getCell(0, "C5", "Leaf5"));
	leaf.getGroupingLevels().setGroupingItem(1, "Stem3");
	leaf.getGroupingLevels().setGroupingItem(2, "Branch2");
	chart.getChartData().getCategories().add(wb.getCell(0, "C6", "Leaf6"));
	leaf = chart.getChartData().getCategories().add(wb.getCell(0, "C7", "Leaf7"));
	leaf.getGroupingLevels().setGroupingItem(1, "Stem4");
	chart.getChartData().getCategories().add(wb.getCell(0, "C8", "Leaf8"));
	IChartSeries series = chart.getChartData().getSeries().add(ChartType.Treemap);
	series.getLabels().getDefaultDataLabelFormat().setShowCategoryName(true);
	series.getDataPoints().addDataPointForTreemapSeries(wb.getCell(0, "D1", 4));
	series.getDataPoints().addDataPointForTreemapSeries(wb.getCell(0, "D2", 5));
	series.getDataPoints().addDataPointForTreemapSeries(wb.getCell(0, "D3", 3));
	series.getDataPoints().addDataPointForTreemapSeries(wb.getCell(0, "D4", 6));
	series.getDataPoints().addDataPointForTreemapSeries(wb.getCell(0, "D5", 9));
	series.getDataPoints().addDataPointForTreemapSeries(wb.getCell(0, "D6", 9));
	series.getDataPoints().addDataPointForTreemapSeries(wb.getCell(0, "D7", 4));
	series.getDataPoints().addDataPointForTreemapSeries(wb.getCell(0, "D8", 3));
	series.setParentLabelLayout(ParentLabelLayoutType.Overlapping);
	pres.save("Treemap.pptx", SaveFormat.Pptx);
}
finally
{
	if (pres != null) pres.dispose();
}

結論

在本教學中，您學習如何使用 Aspose.Slides for Java 函式庫在 PowerPoint 簡報中建立樹狀圖。樹狀圖是可視化分層資料的寶貴工具，可使您的簡報內容更豐富、更有吸引力。

常見問題解答

如何為樹狀圖新增資料？

若要將資料新增至樹狀圖，請使用series.getDataPoints().addDataPointForTreemapSeries()方法，將資料值作為參數傳遞。

如何自訂樹形圖圖表的外觀？

您可以透過修改樹形圖的各種屬性來自訂樹形圖的外觀。chart和series對象，例如顏色、標籤和佈局。

我可以在一個簡報中建立多個樹形圖嗎？

是的，您可以透過遵循相同的步驟並指定不同的投影片位置，在單一簡報中建立多個樹形圖。

如何保存帶有樹形圖的簡報？

使用pres.save()方法以所需的格式（例如，PPTX）保存帶有樹形圖的簡報。