Add Pivot Table Row and Column Fields in Aspose.Cells for Node.js via Java

Adding a Field to the Row or Column Region

The PivotTable.addFieldToArea(PivotFieldType fieldType, String fieldName) method moves a base field from the source data into one of the four pivot regions. The fieldType argument accepts one of the following PivotFieldType values.

ROW — fields placed vertically on the left
COLUMN — fields placed horizontally across the top
DATA — fields whose values are aggregated
PAGE — fields used as report filters Field nesting order matters. Adding Category to the row region first and then Item produces a pivot whose outer grouping is Category and whose inner grouping is Item. Reversing the order reverses the hierarchy.

Pivot Field Subtotals

The PivotField.setSubtotals(PivotFieldSubtotalType subtotalType, boolean shown) method controls which subtotal rows appear for a pivot field. Each call toggles a single subtotal type independently. Passing shown = true displays the subtotal, while shown = false hides it. Because each call only affects one type, calling the method multiple times with different subtotalType values builds a custom subset of subtotals. The PivotFieldSubtotalType enum defines the available subtotal kinds.

AUTOMATIC — Aspose.Cells chooses the default selection (typically SUM for numeric fields)
NONE — suppress every subtotal row
SUM
COUNT
AVERAGE
MAX
MIN
PRODUCT
STD_DEV
STD_DEVP
VAR
VARP

Subtotals only render when there are two or more pivot fields in the row region (or in the column region). A single field has nothing meaningful to subtotal between, so setSubtotals calls have no visible effect in that case. This article therefore places two row fields (Category outer, Item inner) in every example so the subtotal boundary between each Category group is visible.

Scenario 1 — Automatic (Default) Subtotals

When you do not call setSubtotals at all, Aspose.Cells applies the AUTOMATIC selection to numeric fields. The following example explicitly confirms this behavior by calling setSubtotals(PivotFieldSubtotalType.AUTOMATIC, true) on the outer Category row field.

let workbook = new AsposeCells.Workbook();
let worksheet = workbook.getWorksheets().get(0);
worksheet.setName("Data");
worksheet.getCells().get(0, 0).putValue("Category");
worksheet.getCells().get(0, 1).putValue("Item");
worksheet.getCells().get(0, 2).putValue("Year");
worksheet.getCells().get(0, 3).putValue("Amount");
worksheet.getCells().get(1, 0).putValue("Fruit");
worksheet.getCells().get(1, 1).putValue("Apple");
worksheet.getCells().get(1, 2).putValue(2020);
worksheet.getCells().get(1, 3).putValue(100);
worksheet.getCells().get(2, 0).putValue("Fruit");
worksheet.getCells().get(2, 1).putValue("Apple");
worksheet.getCells().get(2, 2).putValue(2021);
worksheet.getCells().get(2, 3).putValue(150);
worksheet.getCells().get(3, 0).putValue("Fruit");
worksheet.getCells().get(3, 1).putValue("Banana");
worksheet.getCells().get(3, 2).putValue(2020);
worksheet.getCells().get(3, 3).putValue(80);
worksheet.getCells().get(4, 0).putValue("Fruit");
worksheet.getCells().get(4, 1).putValue("Banana");
worksheet.getCells().get(4, 2).putValue(2021);
worksheet.getCells().get(4, 3).putValue(90);
worksheet.getCells().get(5, 0).putValue("Vegetable");
worksheet.getCells().get(5, 1).putValue("Carrot");
worksheet.getCells().get(5, 2).putValue(2020);
worksheet.getCells().get(5, 3).putValue(50);
worksheet.getCells().get(6, 0).putValue("Vegetable");
worksheet.getCells().get(6, 1).putValue("Carrot");
worksheet.getCells().get(6, 2).putValue(2021);
worksheet.getCells().get(6, 3).putValue(60);
worksheet.getCells().get(7, 0).putValue("Vegetable");
worksheet.getCells().get(7, 1).putValue("Daikon");
worksheet.getCells().get(7, 2).putValue(2020);
worksheet.getCells().get(7, 3).putValue(40);
worksheet.getCells().get(8, 0).putValue("Vegetable");
worksheet.getCells().get(8, 1).putValue("Daikon");
worksheet.getCells().get(8, 2).putValue(2021);
worksheet.getCells().get(8, 3).putValue(45);
let pivotIndex = worksheet.getPivotTables().add("A1:D9", "F3", "PivotTable1");
let pivotTable = worksheet.getPivotTables().get(pivotIndex);
pivotTable.addFieldToArea(AsposeCells.PivotFieldType.Row, "Category");
pivotTable.addFieldToArea(AsposeCells.PivotFieldType.Row, "Item");
pivotTable.addFieldToArea(AsposeCells.PivotFieldType.Column, "Year");
pivotTable.addFieldToArea(AsposeCells.PivotFieldType.Data, "Amount");
let categoryField = pivotTable.getRowFields().get(0);
categoryField.setSubtotals(AsposeCells.PivotFieldSubtotalType.Automatic, true);
pivotTable.calculateData();
workbook.save("output_automatic.xlsx");

Scenario 2 — Suppressing All Subtotals (None)

Calling setSubtotals(PivotFieldSubtotalType.NONE, true) removes every subtotal row from the pivot, leaving only the field rows and the grand total at the bottom. This is useful when you want the raw grouped data without any summary rows.

let workbook = new AsposeCells.Workbook();
let worksheet = workbook.getWorksheets().get(0);
worksheet.setName("Data");
let headers = ["Category", "Item", "Year", "Amount"];
for (let j = 0; j < headers.length; j++)
{
    worksheet.getCells().get(0, j).putValue(headers[j]);
}
let data = [
    ["Fruit", "Apple", 2020, 100],
    ["Fruit", "Apple", 2021, 150],
    ["Fruit", "Banana", 2020, 80],
    ["Fruit", "Banana", 2021, 90],
    ["Vegetable", "Carrot", 2020, 50],
    ["Vegetable", "Carrot", 2021, 60],
    ["Vegetable", "Daikon", 2020, 40],
    ["Vegetable", "Daikon", 2021, 45]
];
for (let i = 0; i < data.length; i++)
{
    for (let j = 0; j < data[i].length; j++)
    {
        worksheet.getCells().get(i + 1, j).putValue(data[i][j]);
    }
}
let pivotIndex = worksheet.getPivotTables().add("A1:D9", "F3", "PivotTable1");
let pivotTable = worksheet.getPivotTables().get(pivotIndex);
pivotTable.addFieldToArea(AsposeCells.PivotFieldType.Row, "Category");
pivotTable.addFieldToArea(AsposeCells.PivotFieldType.Row, "Item");
pivotTable.addFieldToArea(AsposeCells.PivotFieldType.Column, "Year");
pivotTable.addFieldToArea(AsposeCells.PivotFieldType.Data, "Amount");
let categoryField = pivotTable.getRowFields().get(0);
categoryField.setSubtotals(AsposeCells.PivotFieldSubtotalType.None, true);
pivotTable.calculateData();
workbook.save("output_none.xlsx");

Scenario 3 — Custom Subtotal Subset (Sum + Average)

You are not limited to a single subtotal type. Each setSubtotals call operates independently on one type, so calling the method twice — once with SUM and once with AVERAGE — produces a custom subset of two subtotal rows for each Category group.

let workbook = new AsposeCells.Workbook();
let worksheet = workbook.getWorksheets().get(0);
worksheet.setName("Data");
worksheet.getCells().get("A1").putValue("Category");
worksheet.getCells().get("B1").putValue("Item");
worksheet.getCells().get("C1").putValue("Year");
worksheet.getCells().get("D1").putValue("Amount");
worksheet.getCells().get(1, 0).putValue("Fruit");
worksheet.getCells().get(1, 1).putValue("Apple");
worksheet.getCells().get(1, 2).putValue(2020);
worksheet.getCells().get(1, 3).putValue(100);
worksheet.getCells().get(2, 0).putValue("Fruit");
worksheet.getCells().get(2, 1).putValue("Apple");
worksheet.getCells().get(2, 2).putValue(2021);
worksheet.getCells().get(2, 3).putValue(150);
worksheet.getCells().get(3, 0).putValue("Fruit");
worksheet.getCells().get(3, 1).putValue("Banana");
worksheet.getCells().get(3, 2).putValue(2020);
worksheet.getCells().get(3, 3).putValue(80);
worksheet.getCells().get(4, 0).putValue("Fruit");
worksheet.getCells().get(4, 1).putValue("Banana");
worksheet.getCells().get(4, 2).putValue(2021);
worksheet.getCells().get(4, 3).putValue(90);
worksheet.getCells().get(5, 0).putValue("Vegetable");
worksheet.getCells().get(5, 1).putValue("Carrot");
worksheet.getCells().get(5, 2).putValue(2020);
worksheet.getCells().get(5, 3).putValue(50);
worksheet.getCells().get(6, 0).putValue("Vegetable");
worksheet.getCells().get(6, 1).putValue("Carrot");
worksheet.getCells().get(6, 2).putValue(2021);
worksheet.getCells().get(6, 3).putValue(60);
worksheet.getCells().get(7, 0).putValue("Vegetable");
worksheet.getCells().get(7, 1).putValue("Daikon");
worksheet.getCells().get(7, 2).putValue(2020);
worksheet.getCells().get(7, 3).putValue(40);
worksheet.getCells().get(8, 0).putValue("Vegetable");
worksheet.getCells().get(8, 1).putValue("Daikon");
worksheet.getCells().get(8, 2).putValue(2021);
worksheet.getCells().get(8, 3).putValue(45);
let pivotTables = worksheet.getPivotTables();
let pivotIndex = pivotTables.add("A1:D9", "F3", "PivotTable1");
let pivotTable = pivotTables.get(pivotIndex);
pivotTable.addFieldToArea(AsposeCells.PivotFieldType.Row, "Category");
pivotTable.addFieldToArea(AsposeCells.PivotFieldType.Row, "Item");
pivotTable.addFieldToArea(AsposeCells.PivotFieldType.Column, "Year");
pivotTable.addFieldToArea(AsposeCells.PivotFieldType.Data, "Amount");
let categoryField = pivotTable.getRowFields().get(0);
categoryField.setSubtotals(AsposeCells.PivotFieldSubtotalType.Sum, true);
categoryField.setSubtotals(AsposeCells.PivotFieldSubtotalType.Average, true);
pivotTable.calculateData();
workbook.save("output_custom.xlsx");

Recap

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