Create or Update PowerPoint Presentation Charts in JavaScript

What this page is about

Create and customize charts in PowerPoint presentations with Aspose.Slides for Node.js. Add, format, and edit charts with practical code examples in JavaScript.

Overview

This article provides a comprehensive guide on how to create and customize charts using Aspose.Slides. You will learn how to programmatically add a chart to a slide, populate it with data, and apply various formatting options to match your specific design requirements. Throughout the article, detailed code examples illustrate each step, from initializing the presentation and chart object to configuring series, axes, and legends. By following this guide, you’ll gain a solid understanding of how to integrate dynamic chart generation into your applications, streamlining the process of creating data-driven presentations.

Create a Chart

Charts help people quickly visualize data and gain insights that may not be immediately obvious from a table or spreadsheet.

Why Create Charts?

Using charts, you can:

• aggregate, condense, or summarize large amounts of data on a single slide in a presentation
• expose patterns and trends in data
• deduce the direction and momentum of data over time or with respect to a specific unit of measurement
• spot outliers, aberrations, deviations, errors, nonsensical data, etc.
• communicate or present complex data

In PowerPoint, you can create charts through the Insert function, which provides templates for designing many types of charts. Using Aspose.Slides, you can create both regular charts (based on popular chart types) and custom charts.

Note

To create charts, use the ChartType class. The fields in this class correspond to different chart types.

Create Clustered Column Charts

This section explains how to create clustered column charts using Aspose.Slides. You’ll learn to initialize a presentation, add a chart, and customize its elements such as title, data, series, categories, and styling. Follow the steps below to see how a standard clustered column chart is generated:

1. Create an instance of the Presentation class.
2. Get a reference to a slide using its index.
3. Add a chart with some data and specify the ChartType.ClusteredColumn type.
4. Add a title to the chart.
5. Access the chart’s data worksheet.
6. Clear all the default series and categories.
7. Add new series and categories.
8. Add new chart data for the chart series.
9. Apply a fill color to the chart series.
10. Add labels to the chart series.
11. Save the modified presentation as a PPTX file.

This C# code demonstrates how to create a clustered column chart:

var aspose = aspose || {};
aspose.slides = require("aspose.slides.via.java");
const java = require("java");

// Instantiates a presentation class that represents a PPTX file
var pres = new aspose.slides.Presentation();
try {
    // Accesses the first slide
    var sld = pres.getSlides().get_Item(0);
    // Adds a chart with its default data
    var chart = sld.getShapes().addChart(aspose.slides.ChartType.ClusteredColumn, 0, 0, 500, 500);
    // Sets the chart Title
    chart.setTitle(true);
    chart.getChartTitle().addTextFrameForOverriding("Sample Title");
    chart.getChartTitle().getTextFrameForOverriding().getTextFrameFormat().setCenterText(java.newByte(aspose.slides.NullableBool.True));
    chart.getChartTitle().setHeight(20);
    // Sets the first series to show values
    chart.getChartData().getSeries().get_Item(0).getLabels().getDefaultDataLabelFormat().setShowValue(true);
    // Sets the index for the chart data sheet
    var defaultWorksheetIndex = 0;
    // Gets the chart data WorkSheet
    var fact = chart.getChartData().getChartDataWorkbook();
    // Deletes the default generated series and categories
    chart.getChartData().getSeries().clear();
    chart.getChartData().getCategories().clear();
    var s = chart.getChartData().getSeries().size();
    s = chart.getChartData().getCategories().size();
    // Adds new series
    chart.getChartData().getSeries().add(fact.getCell(defaultWorksheetIndex, 0, 1, "Series 1"), chart.getType());
    chart.getChartData().getSeries().add(fact.getCell(defaultWorksheetIndex, 0, 2, "Series 2"), chart.getType());
    // Adds new categories
    chart.getChartData().getCategories().add(fact.getCell(defaultWorksheetIndex, 1, 0, "Caetegoty 1"));
    chart.getChartData().getCategories().add(fact.getCell(defaultWorksheetIndex, 2, 0, "Caetegoty 2"));
    chart.getChartData().getCategories().add(fact.getCell(defaultWorksheetIndex, 3, 0, "Caetegoty 3"));
    // Takes the first chart series
    var series = chart.getChartData().getSeries().get_Item(0);
    // Now populates the series data
    series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, 1, 1, 20));
    series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, 2, 1, 50));
    series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, 3, 1, 30));
    // Sets the fill color for series
    series.getFormat().getFill().setFillType(java.newByte(aspose.slides.FillType.Solid));
    series.getFormat().getFill().getSolidFillColor().setColor(java.getStaticFieldValue("java.awt.Color", "RED"));
    // Takes the second chart series
    series = chart.getChartData().getSeries().get_Item(1);
    // Populates series data
    series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, 1, 2, 30));
    series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, 2, 2, 10));
    series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, 3, 2, 60));
    // Sets the fill color for the series
    series.getFormat().getFill().setFillType(java.newByte(aspose.slides.FillType.Solid));
    series.getFormat().getFill().getSolidFillColor().setColor(java.getStaticFieldValue("java.awt.Color", "GREEN"));
    // Create custom labels for each categories for the new series
    // Sets the first label to show Category name
    var lbl = series.getDataPoints().get_Item(0).getLabel();
    lbl.getDataLabelFormat().setShowCategoryName(true);
    lbl = series.getDataPoints().get_Item(1).getLabel();
    lbl.getDataLabelFormat().setShowSeriesName(true);
    // Shows value for the third label
    lbl = series.getDataPoints().get_Item(2).getLabel();
    lbl.getDataLabelFormat().setShowValue(true);
    lbl.getDataLabelFormat().setShowSeriesName(true);
    lbl.getDataLabelFormat().setSeparator("/");
    // Saves the presentation with chart
    pres.save("output.pptx", aspose.slides.SaveFormat.Pptx);
} finally {
    if (pres != null) {
        pres.dispose();
    }
}

Create Scatter Charts

Scatter charts (also known as scatter plots or x-y graphs) are often used to check for patterns or demonstrate correlations between two variables.

Use a scatter chart when:

• you have paired numerical data
• you have two variables that pair well together
• you want to determine whether two variables are related
• you have an independent variable that has multiple values for a dependent variable

1. Follow the steps in Create Clustered Column Charts.
2. For the third step, add a chart with some data and specify your chart type as one of the following:
   1. ChartType.ScatterWithMarkers - Represents a scatter chart.
   2. ChartType.ScatterWithSmoothLinesAndMarkers - Represents a scatter chart connected by curves, with data markers.
   3. ChartType.ScatterWithSmoothLines - Represents a scatter chart connected by curves, without data markers.
   4. ChartType.ScatterWithStraightLinesAndMarkers - Represents a scatter chart connected by lines, with data markers.
   5. ChartType.ScatterWithStraightLines - Represents a scatter chart connected by lines, without data markers.

This JavaScript code shows how to create a scatter chart with different markers for each series:

var aspose = aspose || {};
aspose.slides = require("aspose.slides.via.java");

// Instantiates a presentation class that represents a PPTX file
var pres = new aspose.slides.Presentation();
try {
    // Accesses the first slide
    var slide = pres.getSlides().get_Item(0);
    // Creates the default chart
    var chart = slide.getShapes().addChart(aspose.slides.ChartType.ScatterWithSmoothLines, 0, 0, 400, 400);
    // Gets the default chart data worksheet index
    var defaultWorksheetIndex = 0;
    // Gets the chart data worksheet
    var fact = chart.getChartData().getChartDataWorkbook();
    // Deletes the demo series
    chart.getChartData().getSeries().clear();
    // Adds new series
    chart.getChartData().getSeries().add(fact.getCell(defaultWorksheetIndex, 1, 1, "Series 1"), chart.getType());
    chart.getChartData().getSeries().add(fact.getCell(defaultWorksheetIndex, 1, 3, "Series 2"), chart.getType());
    // Takes first chart series
    var series = chart.getChartData().getSeries().get_Item(0);
    // Adds a new point (1:3) to the series
    series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 2, 1, 1), fact.getCell(defaultWorksheetIndex, 2, 2, 3));
    // Adds a new point (2:10)
    series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 3, 1, 2), fact.getCell(defaultWorksheetIndex, 3, 2, 10));
    // Changes the series type
    series.setType(aspose.slides.ChartType.ScatterWithStraightLinesAndMarkers);
    // Changes the chart series marker
    series.getMarker().setSize(10);
    series.getMarker().setSymbol(aspose.slides.MarkerStyleType.Star);
    // Takes the second chart series
    series = chart.getChartData().getSeries().get_Item(1);
    // Adds a new point (5:2) there
    series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 2, 3, 5), fact.getCell(defaultWorksheetIndex, 2, 4, 2));
    // Adds a new point (3:1)
    series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 3, 3, 3), fact.getCell(defaultWorksheetIndex, 3, 4, 1));
    // Adds a new point (2:2)
    series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 4, 3, 2), fact.getCell(defaultWorksheetIndex, 4, 4, 2));
    // Adds a new point (5:1)
    series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 5, 3, 5), fact.getCell(defaultWorksheetIndex, 5, 4, 1));
    // Changes the chart series marker
    series.getMarker().setSize(10);
    series.getMarker().setSymbol(aspose.slides.MarkerStyleType.Circle);
    pres.save("AsposeChart_out.pptx", aspose.slides.SaveFormat.Pptx);
} finally {
    if (pres != null) {
        pres.dispose();
    }
}

Create Pie Charts

Pie charts are best used to show the part-to-whole relationship in data, especially when the data contains categorical labels with numeric values. However, if your data contains many parts or labels, you may want to consider using a bar chart instead.

1. Create an instance of the Presentation class.
2. Get a reference to a slide using its index.
3. Add a chart with default data and specify the ChartType.Pie type.
4. Access the chart data workbook ChartDataWorkbook.
5. Clear the default series and categories.
6. Add new series and categories.
7. Add new chart data for the chart series.
8. Add new points for the chart and apply custom colors for the pie chart’s sectors.
9. Set labels for the series.
10. Enable leader lines for the series labels.
11. Set the rotation angle for pie chart sectors.
12. Save the modified presentation as a PPTX file.

This JavaScript code shows how to create a pie chart:

var aspose = aspose || {};
aspose.slides = require("aspose.slides.via.java");
const java = require("java");

// Instantiates a presentation class that represents a PPTX file
var pres = new aspose.slides.Presentation();
try {
    // Accesses the first slide
    var slides = pres.getSlides().get_Item(0);
    // Adds a chart with default data
    var chart = slides.getShapes().addChart(aspose.slides.ChartType.Pie, 100, 100, 400, 400);
    // Sets the chart Title
    chart.getChartTitle().addTextFrameForOverriding("Sample Title");
    chart.getChartTitle().getTextFrameForOverriding().getTextFrameFormat().setCenterText(java.newByte(aspose.slides.NullableBool.True));
    chart.getChartTitle().setHeight(20);
    chart.setTitle(true);
    // Sets the first series to show values
    chart.getChartData().getSeries().get_Item(0).getLabels().getDefaultDataLabelFormat().setShowValue(true);
    // Sets the index for the chart data sheet
    var defaultWorksheetIndex = 0;
    // Gets the chart data worksheet
    var fact = chart.getChartData().getChartDataWorkbook();
    // Deletes the default generated series and categories
    chart.getChartData().getSeries().clear();
    chart.getChartData().getCategories().clear();
    // Adds new categories
    chart.getChartData().getCategories().add(fact.getCell(0, 1, 0, "First Qtr"));
    chart.getChartData().getCategories().add(fact.getCell(0, 2, 0, "2nd Qtr"));
    chart.getChartData().getCategories().add(fact.getCell(0, 3, 0, "3rd Qtr"));
    // Adds new series
    var series = chart.getChartData().getSeries().add(fact.getCell(0, 0, 1, "Series 1"), chart.getType());
    // Populates the series data
    series.getDataPoints().addDataPointForPieSeries(fact.getCell(defaultWorksheetIndex, 1, 1, 20));
    series.getDataPoints().addDataPointForPieSeries(fact.getCell(defaultWorksheetIndex, 2, 1, 50));
    series.getDataPoints().addDataPointForPieSeries(fact.getCell(defaultWorksheetIndex, 3, 1, 30));
    // Not working in new version
    // Adding new points and setting sector color
    // series.IsColorVaried = true;
    chart.getChartData().getSeriesGroups().get_Item(0).setColorVaried(true);
    var point = series.getDataPoints().get_Item(0);
    point.getFormat().getFill().setFillType(java.newByte(aspose.slides.FillType.Solid));
    point.getFormat().getFill().getSolidFillColor().setColor(java.getStaticFieldValue("java.awt.Color", "CYAN"));
    // Sets the Sector border
    point.getFormat().getLine().getFillFormat().setFillType(java.newByte(aspose.slides.FillType.Solid));
    point.getFormat().getLine().getFillFormat().getSolidFillColor().setColor(java.getStaticFieldValue("java.awt.Color", "GRAY"));
    point.getFormat().getLine().setWidth(3.0);
    point.getFormat().getLine().setStyle(java.newByte(aspose.slides.LineStyle.ThinThick));
    point.getFormat().getLine().setDashStyle(java.newByte(aspose.slides.LineDashStyle.DashDot));
    var point1 = series.getDataPoints().get_Item(1);
    point1.getFormat().getFill().setFillType(java.newByte(aspose.slides.FillType.Solid));
    point1.getFormat().getFill().getSolidFillColor().setColor(java.getStaticFieldValue("java.awt.Color", "ORANGE"));
    // Sets the Sector border
    point1.getFormat().getLine().getFillFormat().setFillType(java.newByte(aspose.slides.FillType.Solid));
    point1.getFormat().getLine().getFillFormat().getSolidFillColor().setColor(java.getStaticFieldValue("java.awt.Color", "BLUE"));
    point1.getFormat().getLine().setWidth(3.0);
    point1.getFormat().getLine().setStyle(java.newByte(aspose.slides.LineStyle.Single));
    point1.getFormat().getLine().setDashStyle(java.newByte(aspose.slides.LineDashStyle.LargeDashDot));
    var point2 = series.getDataPoints().get_Item(2);
    point2.getFormat().getFill().setFillType(java.newByte(aspose.slides.FillType.Solid));
    point2.getFormat().getFill().getSolidFillColor().setColor(java.getStaticFieldValue("java.awt.Color", "YELLOW"));
    // Sets the Sector border
    point2.getFormat().getLine().getFillFormat().setFillType(java.newByte(aspose.slides.FillType.Solid));
    point2.getFormat().getLine().getFillFormat().getSolidFillColor().setColor(java.getStaticFieldValue("java.awt.Color", "RED"));
    point2.getFormat().getLine().setWidth(2.0);
    point2.getFormat().getLine().setStyle(java.newByte(aspose.slides.LineStyle.ThinThin));
    point2.getFormat().getLine().setDashStyle(java.newByte(aspose.slides.LineDashStyle.LargeDashDotDot));
    // Creates custom labels for each of categories for new series
    var lbl1 = series.getDataPoints().get_Item(0).getLabel();
    // lbl.ShowCategoryName = true;
    lbl1.getDataLabelFormat().setShowValue(true);
    var lbl2 = series.getDataPoints().get_Item(1).getLabel();
    lbl2.getDataLabelFormat().setShowValue(true);
    lbl2.getDataLabelFormat().setShowLegendKey(true);
    lbl2.getDataLabelFormat().setShowPercentage(true);
    var lbl3 = series.getDataPoints().get_Item(2).getLabel();
    lbl3.getDataLabelFormat().setShowSeriesName(true);
    lbl3.getDataLabelFormat().setShowPercentage(true);
    // Shows Leader Lines for Chart
    series.getLabels().getDefaultDataLabelFormat().setShowLeaderLines(true);
    // Sets the Rotation Angle for Pie Chart Sectors
    chart.getChartData().getSeriesGroups().get_Item(0).setFirstSliceAngle(180);
    // Saves the presentation with a chart
    pres.save("PieChart_out.pptx", aspose.slides.SaveFormat.Pptx);
} finally {
    if (pres != null) {
        pres.dispose();
    }
}

Create Line Charts

Line charts (also known as line graphs) are best used in situations where you want to demonstrate changes in value over time. Using a line chart, you can compare a large amount of data at once, track changes and trends over time, highlight anomalies in data series, and more.

1. Create an instance of the Presentation class.
2. Get a reference to a slide using its index.
3. Add a chart with default data and specify the ChartType.Line type.
4. Access the chart data workbook (ChartDataWorkbook).
5. Clear the default series and categories.
6. Add new series and categories.
7. Add new chart data for the chart series.
8. Save the modified presentation as a PPTX file.

This JavaScript code shows how to create a line chart:

var aspose = aspose || {};
aspose.slides = require("aspose.slides.via.java");

var pres = new aspose.slides.Presentation();
try {
    var lineChart = pres.getSlides().get_Item(0).getShapes().addChart(aspose.slides.ChartType.Line, 10, 50, 600, 350);
    pres.save("lineChart.pptx", aspose.slides.SaveFormat.Pptx);
} finally {
    if (pres != null) {
        pres.dispose();
    }
}

By default, points on a line chart are joined by straight continuous lines. If you want the points to be joined by dashes instead, you can specify your preferred dash type as follows:

var aspose = aspose || {};
aspose.slides = require("aspose.slides.via.java");
const java = require("java");

var pres = new aspose.slides.Presentation();
try {
    var lineChart = pres.getSlides().get_Item(0).getShapes().addChart(aspose.slides.ChartType.Line, 10, 50, 600, 350);
    for (let i = 0; i < lineChart.getChartData().getSeries().size(); i++) {
        let series = lineChart.getChartData().getSeries().get_Item(i);
        series.getFormat().getLine().setDashStyle(java.newByte(aspose.slides.LineDashStyle.Dash));
    }
    pres.save("lineChart.pptx", aspose.slides.SaveFormat.Pptx);
} finally {
    if (pres != null) {
        pres.dispose();
    }
}

Create Tree Map Charts

Tree map charts are best used for sales data when you want to show the relative size of data categories and quickly draw attention to items that are large contributors within each category.

1. Create an instance of the Presentation class.
2. Get a reference to a slide using its index.
3. Add a chart with default data and specify the ChartType.Treemap type.
4. Access the chart data workbook ChartDataWorkbook.
5. Clear the default series and categories.
6. Add new series and categories.
7. Add new chart data for the chart series.
8. Save the modified presentation as a PPTX file.

This JavaScript code shows how to create a tree map chart:

var aspose = aspose || {};
aspose.slides = require("aspose.slides.via.java");

var pres = new aspose.slides.Presentation();
try {
    var chart = pres.getSlides().get_Item(0).getShapes().addChart(aspose.slides.ChartType.Treemap, 50, 50, 500, 400);
    chart.getChartData().getCategories().clear();
    chart.getChartData().getSeries().clear();
    var wb = chart.getChartData().getChartDataWorkbook();
    wb.clear(0);
    // branch 1
    var 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"));
    // branch 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"));
    var series = chart.getChartData().getSeries().add(aspose.slides.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(aspose.slides.ParentLabelLayoutType.Overlapping);
    pres.save("Treemap.pptx", aspose.slides.SaveFormat.Pptx);
} finally {
    if (pres != null) {
        pres.dispose();
    }
}

Create Stock Charts

1. Create an instance of the Presentation class.
2. Get a reference to a slide using its index.
3. Add a chart with default data and specify the ChartType.OpenHighLowClose type.
4. Access the chart data workbook ChartDataWorkbook.
5. Clear the default series and categories.
6. Add new series and categories.
7. Add new chart data for the chart series.
8. Specify the high-low lines format.
9. Save the modified presentation as a PPTX file.

This JavaScript code shows how to create a stock chart:

var aspose = aspose || {};
aspose.slides = require("aspose.slides.via.java");
const java = require("java");

var pres = new aspose.slides.Presentation();
try {
    var chart = pres.getSlides().get_Item(0).getShapes().addChart(aspose.slides.ChartType.OpenHighLowClose, 50, 50, 600, 400);

    chart.getChartData().getCategories().clear();
    chart.getChartData().getSeries().clear();
    var wb = chart.getChartData().getChartDataWorkbook();
    wb.clear(0);
    chart.getChartData().getCategories().add(wb.getCell(0, 1, 0, "A"));
    chart.getChartData().getCategories().add(wb.getCell(0, 2, 0, "B"));
    chart.getChartData().getCategories().add(wb.getCell(0, 3, 0, "C"));
    chart.getChartData().getSeries().add(wb.getCell(0, 0, 1, "Open"), chart.getType());
    chart.getChartData().getSeries().add(wb.getCell(0, 0, 2, "High"), chart.getType());
    chart.getChartData().getSeries().add(wb.getCell(0, 0, 3, "Low"), chart.getType());
    chart.getChartData().getSeries().add(wb.getCell(0, 0, 4, "Close"), chart.getType());
    var series = chart.getChartData().getSeries().get_Item(0);
    series.getDataPoints().addDataPointForStockSeries(wb.getCell(0, 1, 1, 72));
    series.getDataPoints().addDataPointForStockSeries(wb.getCell(0, 2, 1, 25));
    series.getDataPoints().addDataPointForStockSeries(wb.getCell(0, 3, 1, 38));
    series = chart.getChartData().getSeries().get_Item(1);
    series.getDataPoints().addDataPointForStockSeries(wb.getCell(0, 1, 2, 172));
    series.getDataPoints().addDataPointForStockSeries(wb.getCell(0, 2, 2, 57));
    series.getDataPoints().addDataPointForStockSeries(wb.getCell(0, 3, 2, 57));
    series = chart.getChartData().getSeries().get_Item(2);
    series.getDataPoints().addDataPointForStockSeries(wb.getCell(0, 1, 3, 12));
    series.getDataPoints().addDataPointForStockSeries(wb.getCell(0, 2, 3, 12));
    series.getDataPoints().addDataPointForStockSeries(wb.getCell(0, 3, 3, 13));
    series = chart.getChartData().getSeries().get_Item(3);
    series.getDataPoints().addDataPointForStockSeries(wb.getCell(0, 1, 4, 25));
    series.getDataPoints().addDataPointForStockSeries(wb.getCell(0, 2, 4, 38));
    series.getDataPoints().addDataPointForStockSeries(wb.getCell(0, 3, 4, 50));
    chart.getChartData().getSeriesGroups().get_Item(0).getUpDownBars().setUpDownBars(true);
    chart.getChartData().getSeriesGroups().get_Item(0).getHiLowLinesFormat().getLine().getFillFormat().setFillType(java.newByte(aspose.slides.FillType.Solid));
    for (let i = 0; i < chart.getChartData().getSeries().size(); i++) {
        let ser = chart.getChartData().getSeries().get_Item(i);
        ser.getFormat().getLine().getFillFormat().setFillType(java.newByte(aspose.slides.FillType.NoFill));
    }
    pres.save("output.pptx", aspose.slides.SaveFormat.Pptx);
} finally {
    if (pres != null) {
        pres.dispose();
    }
}

Create Box and Whisker Charts

1. Create an instance of the Presentation class.
2. Get a reference to a slide using its index.
3. Add a chart with default data and specify the ChartType.BoxAndWhisker type.
4. Access the chart data workbook ChartDataWorkbook.
5. Clear the default series and categories.
6. Add new series and categories.
7. Add new chart data for the chart series.
8. Save the modified presentation as a PPTX file.

This JavaScript code shows how to create a box and whisker chart:

var aspose = aspose || {};
aspose.slides = require("aspose.slides.via.java");

var pres = new aspose.slides.Presentation();
try {
    var chart = pres.getSlides().get_Item(0).getShapes().addChart(aspose.slides.ChartType.BoxAndWhisker, 50, 50, 500, 400);
    chart.getChartData().getCategories().clear();
    chart.getChartData().getSeries().clear();
    var wb = chart.getChartData().getChartDataWorkbook();
    wb.clear(0);
    chart.getChartData().getCategories().add(wb.getCell(0, "A1", "Category 1"));
    chart.getChartData().getCategories().add(wb.getCell(0, "A2", "Category 1"));
    chart.getChartData().getCategories().add(wb.getCell(0, "A3", "Category 1"));
    chart.getChartData().getCategories().add(wb.getCell(0, "A4", "Category 1"));
    chart.getChartData().getCategories().add(wb.getCell(0, "A5", "Category 1"));
    chart.getChartData().getCategories().add(wb.getCell(0, "A6", "Category 1"));
    var series = chart.getChartData().getSeries().add(aspose.slides.ChartType.BoxAndWhisker);
    series.setQuartileMethod(aspose.slides.QuartileMethodType.Exclusive);
    series.setShowMeanLine(true);
    series.setShowMeanMarkers(true);
    series.setShowInnerPoints(true);
    series.setShowOutlierPoints(true);
    series.getDataPoints().addDataPointForBoxAndWhiskerSeries(wb.getCell(0, "B1", 15));
    series.getDataPoints().addDataPointForBoxAndWhiskerSeries(wb.getCell(0, "B2", 41));
    series.getDataPoints().addDataPointForBoxAndWhiskerSeries(wb.getCell(0, "B3", 16));
    series.getDataPoints().addDataPointForBoxAndWhiskerSeries(wb.getCell(0, "B4", 10));
    series.getDataPoints().addDataPointForBoxAndWhiskerSeries(wb.getCell(0, "B5", 23));
    series.getDataPoints().addDataPointForBoxAndWhiskerSeries(wb.getCell(0, "B6", 16));
    pres.save("BoxAndWhisker.pptx", aspose.slides.SaveFormat.Pptx);
} finally {
    if (pres != null) {
        pres.dispose();
    }
}

Create Funnel Charts

1. Create an instance of the Presentation class.
2. Get a reference to a slide using its index.
3. Add a chart with default data and specify the ChartType.Funnel type.
4. Save the modified presentation as a PPTX file.

This JavaScript code shows how to create a funnel chart:

var aspose = aspose || {};
aspose.slides = require("aspose.slides.via.java");

var pres = new aspose.slides.Presentation();
try {
    var chart = pres.getSlides().get_Item(0).getShapes().addChart(aspose.slides.ChartType.Funnel, 50, 50, 500, 400);
    chart.getChartData().getCategories().clear();
    chart.getChartData().getSeries().clear();
    var wb = chart.getChartData().getChartDataWorkbook();
    wb.clear(0);
    chart.getChartData().getCategories().add(wb.getCell(0, "A1", "Category 1"));
    chart.getChartData().getCategories().add(wb.getCell(0, "A2", "Category 2"));
    chart.getChartData().getCategories().add(wb.getCell(0, "A3", "Category 3"));
    chart.getChartData().getCategories().add(wb.getCell(0, "A4", "Category 4"));
    chart.getChartData().getCategories().add(wb.getCell(0, "A5", "Category 5"));
    chart.getChartData().getCategories().add(wb.getCell(0, "A6", "Category 6"));
    var series = chart.getChartData().getSeries().add(aspose.slides.ChartType.Funnel);
    series.getDataPoints().addDataPointForFunnelSeries(wb.getCell(0, "B1", 50));
    series.getDataPoints().addDataPointForFunnelSeries(wb.getCell(0, "B2", 100));
    series.getDataPoints().addDataPointForFunnelSeries(wb.getCell(0, "B3", 200));
    series.getDataPoints().addDataPointForFunnelSeries(wb.getCell(0, "B4", 300));
    series.getDataPoints().addDataPointForFunnelSeries(wb.getCell(0, "B5", 400));
    series.getDataPoints().addDataPointForFunnelSeries(wb.getCell(0, "B6", 500));
    pres.save("Funnel.pptx", aspose.slides.SaveFormat.Pptx);
} finally {
    if (pres != null) {
        pres.dispose();
    }
}

Create Sunburst Charts

1. Create an instance of the Presentation class.
2. Get a reference to a slide using its index.
3. Add a chart with default data and specify the ChartType.Sunburst type.
4. Save the modified presentation as a PPTX file.

This JavaScript code shows how to create a sunburst chart:

var aspose = aspose || {};
aspose.slides = require("aspose.slides.via.java");

var pres = new aspose.slides.Presentation();
try {
    var chart = pres.getSlides().get_Item(0).getShapes().addChart(aspose.slides.ChartType.Sunburst, 50, 50, 500, 400);
    chart.getChartData().getCategories().clear();
    chart.getChartData().getSeries().clear();
    var wb = chart.getChartData().getChartDataWorkbook();
    wb.clear(0);
    // branch 1
    var 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"));
    // branch 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"));
    var series = chart.getChartData().getSeries().add(aspose.slides.ChartType.Sunburst);
    series.getLabels().getDefaultDataLabelFormat().setShowCategoryName(true);
    series.getDataPoints().addDataPointForSunburstSeries(wb.getCell(0, "D1", 4));
    series.getDataPoints().addDataPointForSunburstSeries(wb.getCell(0, "D2", 5));
    series.getDataPoints().addDataPointForSunburstSeries(wb.getCell(0, "D3", 3));
    series.getDataPoints().addDataPointForSunburstSeries(wb.getCell(0, "D4", 6));
    series.getDataPoints().addDataPointForSunburstSeries(wb.getCell(0, "D5", 9));
    series.getDataPoints().addDataPointForSunburstSeries(wb.getCell(0, "D6", 9));
    series.getDataPoints().addDataPointForSunburstSeries(wb.getCell(0, "D7", 4));
    series.getDataPoints().addDataPointForSunburstSeries(wb.getCell(0, "D8", 3));
    pres.save("Sunburst.pptx", aspose.slides.SaveFormat.Pptx);
} finally {
    if (pres != null) {
        pres.dispose();
    }
}

Create Histogram Charts

1. Create an instance of the Presentation class.
2. Get a reference to a slide using its index.
3. Add a chart with default data and specify the ChartType.Histogram type.
4. Access the chart data workbook ChartDataWorkbook.
5. Clear the default series and categories.
6. Add new series and categories.
7. Save the modified presentation as a PPTX file.

This JavaScript code shows how to create a histogram chart:

var aspose = aspose || {};
aspose.slides = require("aspose.slides.via.java");

var pres = new aspose.slides.Presentation();
var chart = pres.getSlides().get_Item(0).getShapes().addChart(aspose.slides.ChartType.Histogram, 50, 50, 500, 400);
chart.getChartData().getCategories().clear();
chart.getChartData().getSeries().clear();
var wb = chart.getChartData().getChartDataWorkbook();
wb.clear(0);
var series = chart.getChartData().getSeries().add(aspose.slides.ChartType.Histogram);
series.getDataPoints().addDataPointForHistogramSeries(wb.getCell(0, "A1", 15));
series.getDataPoints().addDataPointForHistogramSeries(wb.getCell(0, "A2", -41));
series.getDataPoints().addDataPointForHistogramSeries(wb.getCell(0, "A3", 16));
series.getDataPoints().addDataPointForHistogramSeries(wb.getCell(0, "A4", 10));
series.getDataPoints().addDataPointForHistogramSeries(wb.getCell(0, "A5", -23));
series.getDataPoints().addDataPointForHistogramSeries(wb.getCell(0, "A6", 16));
chart.getAxes().getHorizontalAxis().setAggregationType(aspose.slides.AxisAggregationType.Automatic);

Create Radar Charts

1. Create an instance of the Presentation class.
2. Get a reference to a slide using its index.
3. Add a chart with some data and specify your preferred chart type (ChartType.Radar in this case).
4. Save the modified presentation as a PPTX file.

This JavaScript code shows how to create a radar chart:

var aspose = aspose || {};
aspose.slides = require("aspose.slides.via.java");

var pres = new aspose.slides.Presentation();
try {
    pres.getSlides().get_Item(0).getShapes().addChart(aspose.slides.ChartType.Radar, 20, 20, 400, 300);
    pres.save("Radar-chart.pptx", aspose.slides.SaveFormat.Pptx);
} finally {
    if (pres != null) {
        pres.dispose();
    }
}

Create Multi-Category Charts

1. Create an instance of the Presentation class.
2. Get a reference to a slide using its index.
3. Add a chart with default data and specify the ChartType.ClusteredColumn type.
4. Access the chart data workbook ChartDataWorkbook.
5. Clear the default series and categories.
6. Add new series and categories.
7. Add new chart data for the chart series.
8. Save the modified presentation as a PPTX file.

This JavaScript code shows how to create a multicategory chart:

var aspose = aspose || {};
aspose.slides = require("aspose.slides.via.java");

var pres = new aspose.slides.Presentation();
try {
    var ch = pres.getSlides().get_Item(0).getShapes().addChart(aspose.slides.ChartType.ClusteredColumn, 100, 100, 600, 450);
    ch.getChartData().getSeries().clear();
    ch.getChartData().getCategories().clear();
    var fact = ch.getChartData().getChartDataWorkbook();
    fact.clear(0);
    var defaultWorksheetIndex = 0;
    var category = ch.getChartData().getCategories().add(fact.getCell(0, "c2", "A"));
    category.getGroupingLevels().setGroupingItem(1, "Group1");
    category = ch.getChartData().getCategories().add(fact.getCell(0, "c3", "B"));
    category = ch.getChartData().getCategories().add(fact.getCell(0, "c4", "C"));
    category.getGroupingLevels().setGroupingItem(1, "Group2");
    category = ch.getChartData().getCategories().add(fact.getCell(0, "c5", "D"));
    category = ch.getChartData().getCategories().add(fact.getCell(0, "c6", "E"));
    category.getGroupingLevels().setGroupingItem(1, "Group3");
    category = ch.getChartData().getCategories().add(fact.getCell(0, "c7", "F"));
    category = ch.getChartData().getCategories().add(fact.getCell(0, "c8", "G"));
    category.getGroupingLevels().setGroupingItem(1, "Group4");
    category = ch.getChartData().getCategories().add(fact.getCell(0, "c9", "H"));
    // Adding Series
    var series = ch.getChartData().getSeries().add(fact.getCell(0, "D1", "Series 1"), aspose.slides.ChartType.ClusteredColumn);
    series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, "D2", 10));
    series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, "D3", 20));
    series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, "D4", 30));
    series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, "D5", 40));
    series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, "D6", 50));
    series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, "D7", 60));
    series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, "D8", 70));
    series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, "D9", 80));
    // Save presentation with chart
    pres.save("AsposeChart_out.pptx", aspose.slides.SaveFormat.Pptx);
} finally {
    if (pres != null) {
        pres.dispose();
    }
}

Create Map Charts

Map charts visualize geographical data and help compare values across regions.

This JavaScript code shows how to create a map chart:

var aspose = aspose || {};
aspose.slides = require("aspose.slides.via.java");

let pres = new aspose.slides.Presentation();
try {
    let chart = pres.getSlides().get_Item(0).getShapes().addChart(aspose.slides.ChartType.Map, 50, 50, 500, 400);
    pres.save("mapChart.pptx", aspose.slides.SaveFormat.Pptx);
} finally {
    if (pres != null) {
        pres.dispose();
    }
}

Create Combination Charts

A combination chart (or combo chart) combines two or more chart types in a single graph. This chart lets you highlight, compare, or examine differences between two or more data sets, helping you identify relationships between them.

The following JavaScript code shows how to create the combination chart shown above in a PowerPoint presentation:

var aspose = aspose || {};
aspose.slides = require("aspose.slides.via.java");
const java = require("java");

function createComboChart() {
    let presentation = new aspose.slides.Presentation();
    let slide = presentation.getSlides().get_Item(0);
    try {
        let chart = createChartWithFirstSeries(slide);

        addSecondSeriesToChart(chart);
        addThirdSeriesToChart(chart);

        setPrimaryAxesFormat(chart);
        setSecondaryAxesFormat(chart);

        presentation.save("combo-chart.pptx", aspose.slides.SaveFormat.Pptx);
    } finally {
        presentation.dispose();
    }
}

function createChartWithFirstSeries(slide) {
    let chart = slide.getShapes().addChart(aspose.slides.ChartType.ClusteredColumn, 50, 50, 600, 400);

    // Set the chart title.
    chart.setTitle(true);
    chart.getChartTitle().addTextFrameForOverriding("Chart Title");
    chart.getChartTitle().setOverlay(false);
    let titleParagraph = chart.getChartTitle().getTextFrameForOverriding().getParagraphs().get_Item(0);
    let titleFormat = titleParagraph.getParagraphFormat().getDefaultPortionFormat();
    titleFormat.setFontBold(java.newByte(aspose.slides.NullableBool.False));
    titleFormat.setFontHeight(18);

    // Set the chart legend.
    chart.getLegend().setPosition(aspose.slides.LegendPositionType.Bottom);
    chart.getLegend().getTextFormat().getPortionFormat().setFontHeight(12);

    // Delete the default generated series and categories.
    chart.getChartData().getSeries().clear();
    chart.getChartData().getCategories().clear();

    const worksheetIndex = 0;
    let workbook = chart.getChartData().getChartDataWorkbook();

    // Add new categories.
    chart.getChartData().getCategories().add(workbook.getCell(worksheetIndex, 1, 0, "Category 1"));
    chart.getChartData().getCategories().add(workbook.getCell(worksheetIndex, 2, 0, "Category 2"));
    chart.getChartData().getCategories().add(workbook.getCell(worksheetIndex, 3, 0, "Category 3"));
    chart.getChartData().getCategories().add(workbook.getCell(worksheetIndex, 4, 0, "Category 4"));

    // Add the first series.
    let seriesNameCell = workbook.getCell(worksheetIndex, 0, 1, "Series 1");
    let series = chart.getChartData().getSeries().add(seriesNameCell, chart.getType());

    series.getParentSeriesGroup().setOverlap(java.newByte(-25));
    series.getParentSeriesGroup().setGapWidth(220);

    series.getDataPoints().addDataPointForBarSeries(workbook.getCell(worksheetIndex, 1, 1, 4.3));
    series.getDataPoints().addDataPointForBarSeries(workbook.getCell(worksheetIndex, 2, 1, 2.5));
    series.getDataPoints().addDataPointForBarSeries(workbook.getCell(worksheetIndex, 3, 1, 3.5));
    series.getDataPoints().addDataPointForBarSeries(workbook.getCell(worksheetIndex, 4, 1, 4.5));

    return chart;
}

function addSecondSeriesToChart(chart) {
    let workbook = chart.getChartData().getChartDataWorkbook();
    const worksheetIndex = 0;

    let seriesNameCell = workbook.getCell(worksheetIndex, 0, 2, "Series 2");
    let series = chart.getChartData().getSeries().add(seriesNameCell, aspose.slides.ChartType.ClusteredColumn);

    series.getParentSeriesGroup().setOverlap(java.newByte(-25));
    series.getParentSeriesGroup().setGapWidth(220);

    series.getDataPoints().addDataPointForBarSeries(workbook.getCell(worksheetIndex, 1, 2, 2.4));
    series.getDataPoints().addDataPointForBarSeries(workbook.getCell(worksheetIndex, 2, 2, 4.4));
    series.getDataPoints().addDataPointForBarSeries(workbook.getCell(worksheetIndex, 3, 2, 1.8));
    series.getDataPoints().addDataPointForBarSeries(workbook.getCell(worksheetIndex, 4, 2, 2.8));
}

function addThirdSeriesToChart(chart) {
    let workbook = chart.getChartData().getChartDataWorkbook();
    const worksheetIndex = 0;

    let seriesNameCell = workbook.getCell(worksheetIndex, 0, 3, "Series 3");
    let series = chart.getChartData().getSeries().add(seriesNameCell, aspose.slides.ChartType.Line);

    series.getDataPoints().addDataPointForLineSeries(workbook.getCell(worksheetIndex, 1, 3, 2.0));
    series.getDataPoints().addDataPointForLineSeries(workbook.getCell(worksheetIndex, 2, 3, 2.0));
    series.getDataPoints().addDataPointForLineSeries(workbook.getCell(worksheetIndex, 3, 3, 3.0));
    series.getDataPoints().addDataPointForLineSeries(workbook.getCell(worksheetIndex, 4, 3, 5.0));

    series.setPlotOnSecondAxis(true);
}

function setPrimaryAxesFormat(chart) {
    // Set the horizontal axis.
    let horizontalAxis = chart.getAxes().getHorizontalAxis();
    horizontalAxis.getTextFormat().getPortionFormat().setFontHeight(12);
    horizontalAxis.getFormat().getLine().getFillFormat().setFillType(java.newByte(aspose.slides.FillType.NoFill));

    setAxisTitle(horizontalAxis, "X Axis");

    // Set the vertical axis.
    let verticalAxis = chart.getAxes().getVerticalAxis();
    verticalAxis.getTextFormat().getPortionFormat().setFontHeight(12);
    verticalAxis.getFormat().getLine().getFillFormat().setFillType(java.newByte(aspose.slides.FillType.NoFill));

    setAxisTitle(verticalAxis, "Y Axis 1");

    // Set the vertical major gridlines color.
    let majorGridLinesFormat = verticalAxis.getMajorGridLinesFormat().getLine().getFillFormat();
    majorGridLinesFormat.setFillType(java.newByte(aspose.slides.FillType.Solid));
    majorGridLinesFormat.getSolidFillColor().setColor(java.newInstanceSync("java.awt.Color", 217, 217, 217));
}

function setSecondaryAxesFormat(chart) {
    // Set the secondary horizontal axis.
    let secondaryHorizontalAxis = chart.getAxes().getSecondaryHorizontalAxis();
    secondaryHorizontalAxis.setPosition(aspose.slides.AxisPositionType.Bottom);
    secondaryHorizontalAxis.setCrossType(aspose.slides.CrossesType.Maximum);
    secondaryHorizontalAxis.setVisible(false);
    secondaryHorizontalAxis.getMajorGridLinesFormat().getLine().getFillFormat().setFillType(java.newByte(aspose.slides.FillType.NoFill));
    secondaryHorizontalAxis.getMinorGridLinesFormat().getLine().getFillFormat().setFillType(java.newByte(aspose.slides.FillType.NoFill));

    // Set the secondary vertical axis.
    let secondaryVerticalAxis = chart.getAxes().getSecondaryVerticalAxis();
    secondaryVerticalAxis.setPosition(aspose.slides.AxisPositionType.Right);
    secondaryVerticalAxis.getTextFormat().getPortionFormat().setFontHeight(12);
    secondaryVerticalAxis.getFormat().getLine().getFillFormat().setFillType(java.newByte(aspose.slides.FillType.NoFill));
    secondaryVerticalAxis.getMajorGridLinesFormat().getLine().getFillFormat().setFillType(java.newByte(aspose.slides.FillType.NoFill));
    secondaryVerticalAxis.getMinorGridLinesFormat().getLine().getFillFormat().setFillType(java.newByte(aspose.slides.FillType.NoFill));

    setAxisTitle(secondaryVerticalAxis, "Y Axis 2");
}

function setAxisTitle(axis, axisTitle) {
    axis.setTitle(true);
    axis.getTitle().setOverlay(false);
    let titleParagraph = axis.getTitle().addTextFrameForOverriding(axisTitle).getParagraphs().get_Item(0);
    let titleFormat = titleParagraph.getParagraphFormat().getDefaultPortionFormat();
    titleFormat.setFontBold(java.newByte(aspose.slides.NullableBool.False));
    titleFormat.setFontHeight(12);
}

Update Charts

1. Create an instance of the Presentation class that represents the presentation containing the chart you want to update.
2. Get a reference to a slide using its index.
3. Traverse through all shapes to find the desired chart.
4. Access the chart data worksheet.
5. Modify the chart data series by changing the series values.
6. Add a new series and populate its data.
7. Save the modified presentation as a PPTX file.

This JavaScript code shows how to update a chart:

var aspose = aspose || {};
aspose.slides = require("aspose.slides.via.java");

var pres = new aspose.slides.Presentation("ExistingChart.pptx");
try {
    // Access first slideMarker
    var sld = pres.getSlides().get_Item(0);
    // Get chart with default data
    var chart = sld.getShapes().get_Item(0);
    // Setting the index of chart data sheet
    var defaultWorksheetIndex = 0;
    // Getting the chart data worksheet
    var fact = chart.getChartData().getChartDataWorkbook();
    // Changing chart Category Name
    fact.getCell(defaultWorksheetIndex, 1, 0, "Modified Category 1");
    fact.getCell(defaultWorksheetIndex, 2, 0, "Modified Category 2");
    // Take first chart series
    var series = chart.getChartData().getSeries().get_Item(0);
    // Now updating series data
    fact.getCell(defaultWorksheetIndex, 0, 1, "New_Series1");// Modifying series name
    series.getDataPoints().get_Item(0).getValue().setData(90);
    series.getDataPoints().get_Item(1).getValue().setData(123);
    series.getDataPoints().get_Item(2).getValue().setData(44);
    // Take Second chart series
    series = chart.getChartData().getSeries().get_Item(1);
    // Now updating series data
    fact.getCell(defaultWorksheetIndex, 0, 2, "New_Series2");// Modifying series name
    series.getDataPoints().get_Item(0).getValue().setData(23);
    series.getDataPoints().get_Item(1).getValue().setData(67);
    series.getDataPoints().get_Item(2).getValue().setData(99);
    // Now, Adding a new series
    chart.getChartData().getSeries().add(fact.getCell(defaultWorksheetIndex, 0, 3, "Series 3"), chart.getType());
    // Take 3rd chart series
    series = chart.getChartData().getSeries().get_Item(2);
    // Now populating series data
    series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, 1, 3, 20));
    series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, 2, 3, 50));
    series.getDataPoints().addDataPointForBarSeries(fact.getCell(defaultWorksheetIndex, 3, 3, 30));
    chart.setType(aspose.slides.ChartType.ClusteredCylinder);
    // Save presentation with chart
    pres.save("AsposeChartModified_out.pptx", aspose.slides.SaveFormat.Pptx);
} finally {
    if (pres != null) {
        pres.dispose();
    }
}

Set Data Range for a Chart

To set the data range for a chart, do this:

1. Create an instance of the Presentation class that represents the presentation containing the chart.
2. Get a reference to a slide using its index.
3. Traverse through all shapes to find the desired chart.
4. Access the chart data and set the range.
5. Save the modified presentation as a PPTX file.

This JavaScript code shows how to set the data range for a chart:

var aspose = aspose || {};
aspose.slides = require("aspose.slides.via.java");

var pres = new aspose.slides.Presentation("ExistingChart.pptx");
try {
    var slide = pres.getSlides().get_Item(0);
    var chart = slide.getShapes().get_Item(0);
    chart.getChartData().setRange("Sheet1!A1:B4");
    pres.save("SetDataRange_out.pptx", aspose.slides.SaveFormat.Pptx);
} finally {
    if (pres != null) {
        pres.dispose();
    }
}

Use Default Markers in Charts

When you use default markers in charts, each chart series automatically gets a different marker symbol.

This JavaScript code shows how to set a chart series marker automatically:

var aspose = aspose || {};
aspose.slides = require("aspose.slides.via.java");

var pres = new aspose.slides.Presentation();
try {
    var slide = pres.getSlides().get_Item(0);
    var chart = slide.getShapes().addChart(aspose.slides.ChartType.LineWithMarkers, 10, 10, 400, 400);
    chart.getChartData().getSeries().clear();
    chart.getChartData().getCategories().clear();
    var fact = chart.getChartData().getChartDataWorkbook();
    chart.getChartData().getSeries().add(fact.getCell(0, 0, 1, "Series 1"), chart.getType());
    var series = chart.getChartData().getSeries().get_Item(0);
    chart.getChartData().getCategories().add(fact.getCell(0, 1, 0, "C1"));
    series.getDataPoints().addDataPointForLineSeries(fact.getCell(0, 1, 1, 24));
    chart.getChartData().getCategories().add(fact.getCell(0, 2, 0, "C2"));
    series.getDataPoints().addDataPointForLineSeries(fact.getCell(0, 2, 1, 23));
    chart.getChartData().getCategories().add(fact.getCell(0, 3, 0, "C3"));
    series.getDataPoints().addDataPointForLineSeries(fact.getCell(0, 3, 1, -10));
    chart.getChartData().getCategories().add(fact.getCell(0, 4, 0, "C4"));
    series.getDataPoints().addDataPointForLineSeries(fact.getCell(0, 4, 1, null));
    chart.getChartData().getSeries().add(fact.getCell(0, 0, 2, "Series 2"), chart.getType());
    // Take second chart series
    var series2 = chart.getChartData().getSeries().get_Item(1);
    // Now populating series data
    series2.getDataPoints().addDataPointForLineSeries(fact.getCell(0, 1, 2, 30));
    series2.getDataPoints().addDataPointForLineSeries(fact.getCell(0, 2, 2, 10));
    series2.getDataPoints().addDataPointForLineSeries(fact.getCell(0, 3, 2, 60));
    series2.getDataPoints().addDataPointForLineSeries(fact.getCell(0, 4, 2, 40));
    chart.setLegend(true);
    chart.getLegend().setOverlay(false);
    pres.save("DefaultMarkersInChart.pptx", aspose.slides.SaveFormat.Pptx);
} finally {
    if (pres != null) {
        pres.dispose();
    }
}

FAQ

What chart types are supported by Aspose.Slides?

Aspose.Slides supports a wide range of chart types, including bar, line, pie, area, scatter, histogram, radar, and many more. This flexibility allows you to choose the most appropriate chart type for your data visualization needs.

How do I add a new chart to a slide?

To add a chart, you first create an instance of the Presentation class, retrieve the desired slide using its index, and then call the method to add a chart, specifying the chart type and initial data. This process integrates the chart directly into your presentation.

How can I update the data displayed in a chart?

You can update a chart’s data by accessing its data workbook (ChartDataWorkbook), clearing any default series and categories, and then adding your custom data. This allows you to programmatically refresh the chart to reflect the latest data.

Is it possible to customize the appearance of the chart?

Yes, Aspose.Slides provides extensive customization options. You can modify colors, fonts, labels, legends, and other formatting elements to tailor the chart’s appearance to your specific design requirements.