Formattazione dei dati nei grafici
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Nei nostri argomenti precedenti, abbiamo già fornito molti esempi per dimostrare come puoi impostare un’origine dati per il tuo grafico, ma in questo argomento forniremo maggiori dettagli sui tipi di dati che possono essere impostati per un grafico.
Impostazione dei dati del grafico
Esistono due tipi di dati da gestire mentre si lavora sui grafici utilizzando Aspose.Cells come segue:
Dati del grafico
I dati del grafico sono quei dati che utilizziamo come origine dati per costruire i nostri grafici. Possiamo aggiungere un intervallo di celle (contenenti i dati del grafico) chiamando il metodoSerieCollezione dell’oggettoAggiungere metodo.
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// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-Java | |
// The path to the documents directory. | |
String dataDir = Utils.getSharedDataDir(SettingChartsData.class) + "charts/"; | |
// Instantiating a Workbook object | |
Workbook workbook = new Workbook(); | |
WorksheetCollection worksheets = workbook.getWorksheets(); | |
// Obtaining the reference of the first worksheet | |
Worksheet worksheet = worksheets.get(0); | |
Cells cells = worksheet.getCells(); | |
// Adding a sample value to "A1" cell | |
cells.get("A1").setValue(50); | |
// Adding a sample value to "A2" cell | |
cells.get("A2").setValue(100); | |
// Adding a sample value to "A3" cell | |
cells.get("A3").setValue(150); | |
// Adding a sample value to "A4" cell | |
cells.get("A4").setValue(200); | |
// Adding a sample value to "B1" cell | |
cells.get("B1").setValue(60); | |
// Adding a sample value to "B2" cell | |
cells.get("B2").setValue(32); | |
// Adding a sample value to "B3" cell | |
cells.get("B3").setValue(50); | |
// Adding a sample value to "B4" cell | |
cells.get("B4").setValue(40); | |
// Adding a sample value to "C1" cell as category data | |
cells.get("C1").setValue("Q1"); | |
// Adding a sample value to "C2" cell as category data | |
cells.get("C2").setValue("Q2"); | |
// Adding a sample value to "C3" cell as category data | |
cells.get("C3").setValue("Y1"); | |
// Adding a sample value to "C4" cell as category data | |
cells.get("C4").setValue("Y2"); | |
// Adding a chart to the worksheet | |
ChartCollection charts = worksheet.getCharts(); | |
// Accessing the instance of the newly added chart | |
int chartIndex = charts.add(ChartType.COLUMN, 5, 0, 15, 5); | |
Chart chart = charts.get(chartIndex); | |
// Adding NSeries (chart data source) to the chart ranging from "A1" | |
// cell to "B4" | |
SeriesCollection nSeries = chart.getNSeries(); | |
nSeries.add("A1:B4", true); | |
// Setting the data source for the category data of NSeries | |
nSeries.setCategoryData("C1:C4"); | |
workbook.save(dataDir + "SettingChartsData_out.xls"); | |
// Print message | |
System.out.println("Workbook with chart is created successfully."); |
Dati di categoria
I dati di categoria vengono utilizzati per l’etichettatura dei dati del grafico e possono essere aggiuntiSerieCollezione utilizzando il suosetCategoryDatametodo.
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// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-Java | |
// The path to the documents directory. | |
String dataDir = Utils.getSharedDataDir(SettingCategoryData.class) + "charts/"; | |
// Instantiating a Workbook object | |
Workbook workbook = new Workbook(); | |
WorksheetCollection worksheets = workbook.getWorksheets(); | |
// Obtaining the reference of the first worksheet | |
Worksheet worksheet = worksheets.get(0); | |
Cells cells = worksheet.getCells(); | |
// Adding a sample value to "A1" cell | |
cells.get("A1").setValue(50); | |
// Adding a sample value to "A2" cell | |
cells.get("A2").setValue(100); | |
// Adding a sample value to "A3" cell | |
cells.get("A3").setValue(150); | |
// Adding a sample value to "A4" cell | |
cells.get("A4").setValue(200); | |
// Adding a sample value to "B1" cell | |
cells.get("B1").setValue(60); | |
// Adding a sample value to "B2" cell | |
cells.get("B2").setValue(32); | |
// Adding a sample value to "B3" cell | |
cells.get("B3").setValue(50); | |
// Adding a sample value to "B4" cell | |
cells.get("B4").setValue(40); | |
// Adding a sample value to "C1" cell as category data | |
cells.get("C1").setValue("Q1"); | |
// Adding a sample value to "C2" cell as category data | |
cells.get("C2").setValue("Q2"); | |
// Adding a sample value to "C3" cell as category data | |
cells.get("C3").setValue("Y1"); | |
// Adding a sample value to "C4" cell as category data | |
cells.get("C4").setValue("Y2"); | |
// Adding a chart to the worksheet | |
ChartCollection charts = worksheet.getCharts(); | |
// Accessing the instance of the newly added chart | |
int chartIndex = charts.add(ChartType.COLUMN, 5, 0, 15, 5); | |
Chart chart = charts.get(chartIndex); | |
// Adding NSeries (chart data source) to the chart ranging from "A1" | |
// cell to "B4" | |
SeriesCollection nSeries = chart.getNSeries(); | |
nSeries.add("A1:B4", true); | |
// Setting the data source for the category data of NSeries | |
nSeries.setCategoryData("C1:C4"); | |
workbook.save(dataDir + "SettingCategoryData_out.xls"); | |
// Print message | |
System.out.println("Workbook with chart is created successfully."); |
Istogramma con grafico e dati di categoria