Scattered Chart in Java Slides

Introduction to Scattered Chart in Aspose.Slides for Java

In this tutorial, we will guide you through the process of creating a Scatter Chart using Aspose.Slides for Java. Scatter charts are useful for visualizing data points on a two-dimensional plane. We’ll provide step-by-step instructions and include Java source code for your convenience.

Prerequisites

Before you begin, make sure you have the following prerequisites in place:

Aspose.Slides for Java installed.
A Java development environment set up.

Step 1: Initialize the Presentation

First, import the necessary libraries and create a new presentation.

// The path to the documents directory.
String dataDir = "Your Document Directory";

// Create directory if it is not already present.
boolean IsExists = new File(dataDir).exists();
if (!IsExists)
    new File(dataDir).mkdirs();

// Create a new presentation
Presentation pres = new Presentation();

Step 2: Add a Slide and Create the Scatter Chart

Next, add a slide and create the scatter chart on it. We’ll use the ScatterWithSmoothLines chart type in this example.

// Get the first slide
ISlide slide = pres.getSlides().get_Item(0);

// Creating the scatter chart
IChart chart = slide.getShapes().addChart(ChartType.ScatterWithSmoothLines, 0, 0, 400, 400);

Step 3: Prepare Chart Data

Now, let’s prepare the data for our scatter chart. We’ll add two series, each with multiple data points.

// Getting the default chart data worksheet index
int defaultWorksheetIndex = 0;

// Getting the chart data worksheet
IChartDataWorkbook fact = chart.getChartData().getChartDataWorkbook();

// Delete demo series
chart.getChartData().getSeries().clear();

// Add the first 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());

// Take the first chart series
IChartSeries series = chart.getChartData().getSeries().get_Item(0);

// Add data points to the first series
series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 2, 1, 1), fact.getCell(defaultWorksheetIndex, 2, 2, 3));
series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 3, 1, 2), fact.getCell(defaultWorksheetIndex, 3, 2, 10));

// Edit the type of series
series.setType(ChartType.ScatterWithStraightLinesAndMarkers);
series.getMarker().setSize(10); // Change marker size
series.getMarker().setSymbol(MarkerStyleType.Star); // Change marker symbol

// Take the second chart series
series = chart.getChartData().getSeries().get_Item(1);

// Add data points to the second series
series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 2, 3, 5), fact.getCell(defaultWorksheetIndex, 2, 4, 2));
series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 3, 3, 3), fact.getCell(defaultWorksheetIndex, 3, 4, 1));
series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 4, 3, 2), fact.getCell(defaultWorksheetIndex, 4, 4, 2));
series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 5, 3, 5), fact.getCell(defaultWorksheetIndex, 5, 4, 1));

// Change the marker style for the second series
series.getMarker().setSize(10);
series.getMarker().setSymbol(MarkerStyleType.Circle);

Step 4: Save the Presentation

Finally, save the presentation with the scatter chart to a PPTX file.

pres.save(dataDir + "AsposeChart_out.pptx", SaveFormat.Pptx);

That’s it! You’ve successfully created a Scatter Chart using Aspose.Slides for Java. You can now customize this example further to suit your specific data and design requirements.

Complete Source Code For Scattered Chart in Java Slides

// The path to the documents directory.
String dataDir = "Your Document Directory";
// Create directory if it is not already present.
boolean IsExists = new File(dataDir).exists();
if (!IsExists)
	new File(dataDir).mkdirs();
Presentation pres = new Presentation();
ISlide slide = pres.getSlides().get_Item(0);
// Creating the default chart
IChart chart = slide.getShapes().addChart(ChartType.ScatterWithSmoothLines, 0, 0, 400, 400);
// Getting the default chart data worksheet index
int defaultWorksheetIndex = 0;
// Getting the chart data worksheet
IChartDataWorkbook fact = chart.getChartData().getChartDataWorkbook();
// Delete demo series
chart.getChartData().getSeries().clear();
// Add 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());
// Take first chart series
IChartSeries series = chart.getChartData().getSeries().get_Item(0);
// Add new point (1:3) there.
series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 2, 1, 1), fact.getCell(defaultWorksheetIndex, 2, 2, 3));
// Add new point (2:10)
series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 3, 1, 2), fact.getCell(defaultWorksheetIndex, 3, 2, 10));
// Edit the type of series
series.setType(ChartType.ScatterWithStraightLinesAndMarkers);
// Changing the chart series marker
series.getMarker().setSize(10);
series.getMarker().setSymbol(MarkerStyleType.Star);
// Take second chart series
series = chart.getChartData().getSeries().get_Item(1);
// Add new point (5:2) there.
series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 2, 3, 5), fact.getCell(defaultWorksheetIndex, 2, 4, 2));
// Add new point (3:1)
series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 3, 3, 3), fact.getCell(defaultWorksheetIndex, 3, 4, 1));
// Add new point (2:2)
series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 4, 3, 2), fact.getCell(defaultWorksheetIndex, 4, 4, 2));
// Add new point (5:1)
series.getDataPoints().addDataPointForScatterSeries(fact.getCell(defaultWorksheetIndex, 5, 3, 5), fact.getCell(defaultWorksheetIndex, 5, 4, 1));
// Changing the chart series marker
series.getMarker().setSize(10);
series.getMarker().setSymbol(MarkerStyleType.Circle);
pres.save(dataDir + "AsposeChart_out.pptx", SaveFormat.Pptx);

Conclusion

In this tutorial, we’ve walked you through the process of creating a Scatter Chart using Aspose.Slides for Java. Scatter charts are powerful tools for visualizing data points in a two-dimensional space, making it easier to analyze and understand complex data relationships.

FAQ’s

How can I change the chart type?

To change the chart type, use the setType method on the chart series and provide the desired chart type. For example, series.setType(ChartType.Line) would change the series to a line chart.

How do I customize the marker size and style?

You can change the marker size and style using the getMarker method on the series and then set the size and symbol properties. For example:

series.getMarker().setSize(10);
series.getMarker().setSymbol(MarkerStyleType.Circle);

Feel free to explore more customization options in the Aspose.Slides for Java documentation.

Remember to replace "Your Document Directory" with the actual path where you want to save the presentation.

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